Chapter 2. OpenShift CLI (oc)
2.1. Getting started with the OpenShift CLI Copy linkLink copied to clipboard!
2.1.1. About the OpenShift CLI Copy linkLink copied to clipboard!
With the OpenShift CLI (oc), you can create applications and manage OpenShift Dedicated projects from a terminal. The OpenShift CLI is ideal in the following situations:
- Working directly with project source code.
- Scripting OpenShift Dedicated operations
- Managing projects while restricted by bandwidth resources and the web console is unavailable.
2.1.2. Installing the OpenShift CLI Copy linkLink copied to clipboard!
You can install the OpenShift CLI (oc) either by downloading the binary or by using an RPM.
2.1.3. Installing the OpenShift CLI on Linux Copy linkLink copied to clipboard!
To manage your cluster and deploy applications from the command line, install the OpenShift CLI (oc) binary on Linux.
If you installed an earlier version of oc, you cannot use it to complete all of the commands in OpenShift Dedicated.
Download and install the new version of oc.
Procedure
- Navigate to the Download OpenShift Container Platform page on the Red Hat Customer Portal.
- Select the architecture from the Product Variant list.
- Select the appropriate version from the Version list.
- Click Download Now next to the OpenShift v4 Linux Clients entry and save the file.
Unpack the archive:
$ tar xvf <file>Place the
ocbinary in a directory that is on yourPATH.To check your
PATH, execute the following command:$ echo $PATH
Verification
After you install the OpenShift CLI, it is available using the
occommand:$ oc <command>
2.1.4. Installing the OpenShift CLI on Windows Copy linkLink copied to clipboard!
To manage your cluster and deploy applications from the command line, install OpenShift CLI (oc) binary on Windows.
If you installed an earlier version of oc, you cannot use it to complete all of the commands in OpenShift Dedicated.
Download and install the new version of oc.
Procedure
- Navigate to the Download OpenShift Container Platform page on the Red Hat Customer Portal.
- Select the appropriate version from the Version list.
- Click Download Now next to the OpenShift v4 Windows Client entry and save the file.
- Extract the archive with a ZIP program.
Move the
ocbinary to a directory that is on yourPATHvariable.To check your
PATHvariable, open the command prompt and execute the following command:C:\> path
Verification
After you install the OpenShift CLI, it is available using the
occommand:C:\> oc <command>
2.1.5. Installing the OpenShift CLI on macOS Copy linkLink copied to clipboard!
To manage your cluster and deploy applications from the command line, install the OpenShift CLI (oc) binary on macOS.
If you installed an earlier version of oc, you cannot use it to complete all of the commands in OpenShift Dedicated.
Download and install the new version of oc.
Procedure
- Navigate to the Download OpenShift Container Platform on the Red Hat Customer Portal.
- Select the appropriate version from the Version drop-down list.
- Click Download Now next to the OpenShift v4 macOS Clients entry and save the file.
- Unpack and unzip the archive.
Move the
ocbinary to a directory on yourPATHvariable.To check your
PATHvariable, open a terminal and execute the following command:$ echo $PATH
Verification
Verify your installation by using an
occommand:$ oc <command>
2.1.5.1. Installing the OpenShift CLI by using the web console Copy linkLink copied to clipboard!
You can install the OpenShift CLI (oc) to interact with OpenShift Dedicated clusters from a web console. You can install oc on Linux, Windows, or macOS.
If you installed an earlier version of oc, you cannot use it to complete all of the commands in OpenShift Dedicated 4. Download and install the new version of oc.
2.1.5.1.1. Installing the OpenShift CLI on Linux using the web console Copy linkLink copied to clipboard!
You can install the OpenShift CLI (oc) binary on Linux by using the following procedure.
Procedure
-
Download the latest version of the
ocCLI for your operating system from the Downloads page on OpenShift Cluster Manager. Extract the
ocbinary file from the downloaded archive.$ tar xvf <file>Move the
ocbinary to a directory that is on yourPATH.To check your
PATH, execute the following command:$ echo $PATH
After you install the OpenShift CLI, it is available using the oc command:
$ oc <command>
2.1.5.1.2. Installing the OpenShift CLI on Windows using the web console Copy linkLink copied to clipboard!
You can install the OpenShift CLI (oc) binary on Windows by using the following procedure.
Procedure
-
Download the latest version of the
ocCLI for your operating system from the Downloads page on OpenShift Cluster Manager. -
Extract the
ocbinary file from the downloaded archive. Move the
ocbinary to a directory that is on yourPATH.To check your
PATH, open the command prompt and execute the following command:C:\> path
After you install the OpenShift CLI, it is available using the oc command:
C:\> oc <command>
2.1.5.1.3. Installing the OpenShift CLI on macOS using the web console Copy linkLink copied to clipboard!
You can install the OpenShift CLI (oc) binary on macOS by using the following procedure.
Procedure
-
Download the latest version of the
ocCLI for your operating system from the Downloads page on OpenShift Cluster Manager. -
Extract the
ocbinary file from the downloaded archive. Move the
ocbinary to a directory on your PATH.To check your
PATH, open a terminal and execute the following command:$ echo $PATH
After you install the OpenShift CLI, it is available using the oc command:
$ oc <command>
2.1.5.2. Installing the OpenShift CLI by using an RPM Copy linkLink copied to clipboard!
For Red Hat Enterprise Linux (RHEL), you can install the OpenShift CLI (oc) as an RPM if you have an active OpenShift Dedicated subscription on your Red Hat account.
You must install oc for RHEL 9 by downloading the binary. Installing oc by using an RPM package is not supported on Red Hat Enterprise Linux (RHEL) 9.
Prerequisites
- You must have root or sudo privileges.
Procedure
Register with Red Hat Subscription Manager:
# subscription-manager registerPull the latest subscription data:
# subscription-manager refreshList the available subscriptions:
# subscription-manager list --available --matches '*OpenShift*'In the output for the previous command, find the pool ID for an OpenShift Dedicated subscription and attach the subscription to the registered system:
# subscription-manager attach --pool=<pool_id>Enable the repositories required by OpenShift Dedicated 4.
# subscription-manager repos --enable="rhocp-4-for-rhel-8-x86_64-rpms"Install the
openshift-clientspackage:# yum install openshift-clients
Verification
Verify your installation by using an
occommand:$ oc <command>
2.1.5.3. Installing the OpenShift CLI by using Homebrew Copy linkLink copied to clipboard!
For macOS, you can install the OpenShift CLI (oc) by using the Homebrew package manager.
Prerequisites
-
You must have Homebrew (
brew) installed.
Procedure
Install the openshift-cli package by running the following command:
$ brew install openshift-cli
Verification
-
Verify your installation by using an
occommand:
$ oc <command>
2.1.6. Logging in to the OpenShift CLI Copy linkLink copied to clipboard!
You can log in to the OpenShift CLI (oc) to access and manage your cluster.
Prerequisites
- You must have access to a OpenShift Dedicated cluster.
-
The OpenShift CLI (
oc) is installed.
To access a cluster that is accessible only over an HTTP proxy server, you can set the HTTP_PROXY, HTTPS_PROXY and NO_PROXY variables. These environment variables are respected by the oc CLI so that all communication with the cluster goes through the HTTP proxy.
Authentication headers are sent only when using HTTPS transport.
Procedure
Enter the
oc logincommand and pass in a user name:$ oc login -u user1When prompted, enter the required information:
Example output
Server [https://localhost:8443]: https://openshift.example.com:64431 The server uses a certificate signed by an unknown authority. You can bypass the certificate check, but any data you send to the server could be intercepted by others. Use insecure connections? (y/n): y2 Authentication required for https://openshift.example.com:6443 (openshift) Username: user1 Password:3 Login successful. You don't have any projects. You can try to create a new project, by running oc new-project <projectname> Welcome! See 'oc help' to get started.
If you are logged in to the web console, you can generate an oc login command that includes your token and server information. You can use the command to log in to the OpenShift CLI (oc) without the interactive prompts. To generate the command, select Copy login command from the username drop-down menu at the top right of the web console.
You can now create a project or issue other commands for managing your cluster.
2.1.7. Logging in to the OpenShift CLI using a web browser Copy linkLink copied to clipboard!
You can log in to the OpenShift CLI (oc) with the help of a web browser to access and manage your cluster. This allows users to avoid inserting their access token into the command line.
Logging in to the CLI through the web browser runs a server on localhost with HTTP, not HTTPS; use with caution on multi-user workstations.
Prerequisites
- You must have access to an OpenShift Dedicated cluster.
-
You must have installed the OpenShift CLI (
oc). - You must have a browser installed.
Procedure
Enter the
oc logincommand with the--webflag:$ oc login <cluster_url> --web1 - 1
- Optionally, you can specify the server URL and callback port. For example,
oc login <cluster_url> --web --callback-port 8280 localhost:8443.
The web browser opens automatically. If it does not, click the link in the command output. If you do not specify the OpenShift Dedicated server
octries to open the web console of the cluster specified in the currentocconfiguration file. If noocconfiguration exists,ocprompts interactively for the server URL.Example output
Opening login URL in the default browser: https://openshift.example.com Opening in existing browser session.- If more than one identity provider is available, select your choice from the options provided.
-
Enter your username and password into the corresponding browser fields. After you are logged in, the browser displays the text
access token received successfully; please return to your terminal. Check the CLI for a login confirmation.
Example output
Login successful. You don't have any projects. You can try to create a new project, by running oc new-project <projectname>
The web console defaults to the profile used in the previous session. To switch between Administrator and Developer profiles, log out of the OpenShift Dedicated web console and clear the cache.
You can now create a project or issue other commands for managing your cluster.
2.1.8. Using the OpenShift CLI Copy linkLink copied to clipboard!
Review the following sections to learn how to complete common tasks using the CLI.
2.1.8.1. Creating a project Copy linkLink copied to clipboard!
Use the oc new-project command to create a new project.
$ oc new-project my-project
Example output
Now using project "my-project" on server "https://openshift.example.com:6443".
2.1.8.2. Creating a new app Copy linkLink copied to clipboard!
Use the oc new-app command to create a new application.
$ oc new-app https://github.com/sclorg/cakephp-ex
Example output
--> Found image 40de956 (9 days old) in imagestream "openshift/php" under tag "7.2" for "php"
...
Run 'oc status' to view your app.
2.1.8.3. Viewing pods Copy linkLink copied to clipboard!
Use the oc get pods command to view the pods for the current project.
When you run oc inside a pod and do not specify a namespace, the namespace of the pod is used by default.
$ oc get pods -o wide
Example output
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE
cakephp-ex-1-build 0/1 Completed 0 5m45s 10.131.0.10 ip-10-0-141-74.ec2.internal <none>
cakephp-ex-1-deploy 0/1 Completed 0 3m44s 10.129.2.9 ip-10-0-147-65.ec2.internal <none>
cakephp-ex-1-ktz97 1/1 Running 0 3m33s 10.128.2.11 ip-10-0-168-105.ec2.internal <none>
2.1.8.4. Viewing pod logs Copy linkLink copied to clipboard!
Use the oc logs command to view logs for a particular pod.
$ oc logs cakephp-ex-1-deploy
Example output
--> Scaling cakephp-ex-1 to 1
--> Success
2.1.8.5. Viewing the current project Copy linkLink copied to clipboard!
Use the oc project command to view the current project.
$ oc project
Example output
Using project "my-project" on server "https://openshift.example.com:6443".
2.1.8.6. Viewing the status for the current project Copy linkLink copied to clipboard!
Use the oc status command to view information about the current project, such as services, deployments, and build configs.
$ oc status
Example output
In project my-project on server https://openshift.example.com:6443
svc/cakephp-ex - 172.30.236.80 ports 8080, 8443
dc/cakephp-ex deploys istag/cakephp-ex:latest <-
bc/cakephp-ex source builds https://github.com/sclorg/cakephp-ex on openshift/php:7.2
deployment #1 deployed 2 minutes ago - 1 pod
3 infos identified, use 'oc status --suggest' to see details.
2.1.8.7. Listing supported API resources Copy linkLink copied to clipboard!
Use the oc api-resources command to view the list of supported API resources on the server.
$ oc api-resources
Example output
NAME SHORTNAMES APIGROUP NAMESPACED KIND
bindings true Binding
componentstatuses cs false ComponentStatus
configmaps cm true ConfigMap
...
2.1.9. Getting help Copy linkLink copied to clipboard!
You can get help with CLI commands and OpenShift Dedicated resources in the following ways:
Use
oc helpto get a list and description of all available CLI commands:Example: Get general help for the CLI
$ oc helpExample output
OpenShift Client This client helps you develop, build, deploy, and run your applications on any OpenShift or Kubernetes compatible platform. It also includes the administrative commands for managing a cluster under the 'adm' subcommand. Usage: oc [flags] Basic Commands: login Log in to a server new-project Request a new project new-app Create a new application ...Use the
--helpflag to get help about a specific CLI command:Example: Get help for the
oc createcommand$ oc create --helpExample output
Create a resource by filename or stdin JSON and YAML formats are accepted. Usage: oc create -f FILENAME [flags] ...Use the
oc explaincommand to view the description and fields for a particular resource:Example: View documentation for the
Podresource$ oc explain podsExample output
KIND: Pod VERSION: v1 DESCRIPTION: Pod is a collection of containers that can run on a host. This resource is created by clients and scheduled onto hosts. FIELDS: apiVersion <string> APIVersion defines the versioned schema of this representation of an object. Servers should convert recognized schemas to the latest internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#resources ...
2.1.10. Logging out of the OpenShift CLI Copy linkLink copied to clipboard!
You can log out the OpenShift CLI to end your current session.
Use the
oc logoutcommand.$ oc logoutExample output
Logged "user1" out on "https://openshift.example.com"
This deletes the saved authentication token from the server and removes it from your configuration file.
2.2. Configuring the OpenShift CLI Copy linkLink copied to clipboard!
2.2.1. Enabling tab completion Copy linkLink copied to clipboard!
You can enable tab completion for the Bash or Zsh shells.
2.2.1.1. Enabling tab completion for Bash Copy linkLink copied to clipboard!
After you install the OpenShift CLI (oc), you can enable tab completion to automatically complete oc commands or suggest options when you press Tab. The following procedure enables tab completion for the Bash shell.
Prerequisites
-
You must have the OpenShift CLI (
oc) installed. -
You must have the package
bash-completioninstalled.
Procedure
Save the Bash completion code to a file:
$ oc completion bash > oc_bash_completionCopy the file to
/etc/bash_completion.d/:$ sudo cp oc_bash_completion /etc/bash_completion.d/You can also save the file to a local directory and source it from your
.bashrcfile instead. Tab completion is enabled when you open a new terminal.
2.2.1.2. Enabling tab completion for Zsh Copy linkLink copied to clipboard!
After you install the OpenShift CLI (oc), you can enable tab completion to automatically complete oc commands or suggest options when you press Tab. The following procedure enables tab completion for the Zsh shell.
Prerequisites
-
You must have the OpenShift CLI (
oc) installed.
Procedure
To add tab completion for
octo your.zshrcfile, run the following command:$ cat >>~/.zshrc<<EOF autoload -Uz compinit compinit if [ $commands[oc] ]; then source <(oc completion zsh) compdef _oc oc fi EOFTab completion is enabled when you open a new terminal.
2.2.2. Accessing kubeconfig by using the oc CLI Copy linkLink copied to clipboard!
You can use the oc CLI to log in to your OpenShift cluster and retrieve a kubeconfig file for accessing the cluster from the command line.
Prerequisites
- You have access to the OpenShift Dedicated web console or API server endpoint.
Procedure
Log in to your OpenShift cluster by running the following command:
$ oc login <api-server-url> -u <username> -p <password>1 2 3 - 1
- Specify the full API server URL. For example:
https://api.my-cluster.example.com:6443. - 2
- Specify a valid username. For example:
kubeadmin. - 3
- Provide the password for the specified user. For example, the
kubeadminpassword generated during cluster installation.
Save the cluster configuration to a local file by running the following command:
$ oc config view --raw > kubeconfigSet the
KUBECONFIGenvironment variable to point to the exported file by running the following command:$ export KUBECONFIG=./kubeconfigUse
octo interact with your OpenShift cluster by running the following command:$ oc get nodes
If you plan to reuse the exported kubeconfig file across sessions or machines, store it securely and avoid committing it to source control.
2.3. Usage of oc and kubectl commands Copy linkLink copied to clipboard!
The Kubernetes command-line interface (CLI), kubectl, can be used to run commands against a Kubernetes cluster. Because OpenShift Dedicated is a certified Kubernetes distribution, you can use the supported kubectl binaries that ship with OpenShift Dedicated, or you can gain extended functionality by using the oc binary.
2.3.1. The oc binary Copy linkLink copied to clipboard!
The oc binary offers the same capabilities as the kubectl binary, but it extends to natively support additional OpenShift Dedicated features, including:
Full support for OpenShift Dedicated resources
Resources such as
DeploymentConfig,BuildConfig,Route,ImageStream, andImageStreamTagobjects are specific to OpenShift Dedicated distributions, and build upon standard Kubernetes primitives.- Authentication
Additional commands
The additional command
oc new-app, for example, makes it easier to get new applications started using existing source code or pre-built images. Similarly, the additional commandoc new-projectmakes it easier to start a project that you can switch to as your default.
If you installed an earlier version of the oc binary, you cannot use it to complete all of the commands in OpenShift Dedicated 4 . If you want the latest features, you must download and install the latest version of the oc binary corresponding to your OpenShift Dedicated server version.
Non-security API changes will involve, at minimum, two minor releases (4.1 to 4.2 to 4.3, for example) to allow older oc binaries to update. Using new capabilities might require newer oc binaries. A 4.3 server might have additional capabilities that a 4.2 oc binary cannot use and a 4.3 oc binary might have additional capabilities that are unsupported by a 4.2 server.
|
X.Y ( |
X.Y+N [a] ( | |
| X.Y (Server) |
|
|
| X.Y+N [a] (Server) |
|
|
[a]
Where N is a number greater than or equal to 1.
| ||
Fully compatible.
oc client might not be able to access server features.
oc client might provide options and features that might not be compatible with the accessed server.
2.3.2. The kubectl binary Copy linkLink copied to clipboard!
The kubectl binary is provided as a means to support existing workflows and scripts for new OpenShift Dedicated users coming from a standard Kubernetes environment, or for those who prefer to use the kubectl CLI. Existing users of kubectl can continue to use the binary to interact with Kubernetes primitives, with no changes required to the OpenShift Dedicated cluster.
You can install the supported kubectl binary by following the steps to Install the OpenShift CLI. The kubectl binary is included in the archive if you download the binary, or is installed when you install the CLI by using an RPM.
For more information, see the kubectl documentation.
2.4. Managing CLI profiles Copy linkLink copied to clipboard!
A CLI configuration file allows you to configure different profiles, or contexts, for use with the CLI tools overview. A context consists of a OpenShift Dedicated server information associated with a nickname.
2.4.1. About switches between CLI profiles Copy linkLink copied to clipboard!
Contexts allow you to easily switch between multiple users across multiple OpenShift Dedicated servers, or clusters, when using CLI operations. Nicknames make managing CLI configurations easier by providing short-hand references to contexts, user credentials, and cluster details. After a user logs in with the oc CLI for the first time, OpenShift Dedicated creates a ~/.kube/config file if one does not already exist. As more authentication and connection details are provided to the CLI, either automatically during an oc login operation or by manually configuring CLI profiles, the updated information is stored in the configuration file:
CLI config file
apiVersion: v1
clusters:
- cluster:
insecure-skip-tls-verify: true
server: https://openshift1.example.com:8443
name: openshift1.example.com:8443
- cluster:
insecure-skip-tls-verify: true
server: https://openshift2.example.com:8443
name: openshift2.example.com:8443
contexts:
- context:
cluster: openshift1.example.com:8443
namespace: alice-project
user: alice/openshift1.example.com:8443
name: alice-project/openshift1.example.com:8443/alice
- context:
cluster: openshift1.example.com:8443
namespace: joe-project
user: alice/openshift1.example.com:8443
name: joe-project/openshift1/alice
current-context: joe-project/openshift1.example.com:8443/alice
kind: Config
preferences: {}
users:
- name: alice/openshift1.example.com:8443
user:
token: xZHd2piv5_9vQrg-SKXRJ2Dsl9SceNJdhNTljEKTb8k
- 1
- The
clusterssection defines connection details for OpenShift Dedicated clusters, including the address for their master server. In this example, one cluster is nicknamedopenshift1.example.com:8443and another is nicknamedopenshift2.example.com:8443. - 2
- This
contextssection defines two contexts: one nicknamedalice-project/openshift1.example.com:8443/alice, using thealice-projectproject,openshift1.example.com:8443cluster, andaliceuser, and another nicknamedjoe-project/openshift1.example.com:8443/alice, using thejoe-projectproject,openshift1.example.com:8443cluster andaliceuser. - 3
- The
current-contextparameter shows that thejoe-project/openshift1.example.com:8443/alicecontext is currently in use, allowing thealiceuser to work in thejoe-projectproject on theopenshift1.example.com:8443cluster. - 4
- The
userssection defines user credentials. In this example, the user nicknamealice/openshift1.example.com:8443uses an access token.
The CLI can support multiple configuration files which are loaded at runtime and merged together along with any override options specified from the command line. After you are logged in, you can use the oc status or oc project command to verify your current working environment:
Verify the current working environment
$ oc status
Example output
oc status
In project Joe's Project (joe-project)
service database (172.30.43.12:5434 -> 3306)
database deploys docker.io/openshift/mysql-55-centos7:latest
#1 deployed 25 minutes ago - 1 pod
service frontend (172.30.159.137:5432 -> 8080)
frontend deploys origin-ruby-sample:latest <-
builds https://github.com/openshift/ruby-hello-world with joe-project/ruby-20-centos7:latest
#1 deployed 22 minutes ago - 2 pods
To see more information about a service or deployment, use 'oc describe service <name>' or 'oc describe dc <name>'.
You can use 'oc get all' to see lists of each of the types described in this example.
List the current project
$ oc project
Example output
Using project "joe-project" from context named "joe-project/openshift1.example.com:8443/alice" on server "https://openshift1.example.com:8443".
You can run the oc login command again and supply the required information during the interactive process, to log in using any other combination of user credentials and cluster details. A context is constructed based on the supplied information if one does not already exist. If you are already logged in and want to switch to another project the current user already has access to, use the oc project command and enter the name of the project:
$ oc project alice-project
Example output
Now using project "alice-project" on server "https://openshift1.example.com:8443".
At any time, you can use the oc config view command to view your current CLI configuration, as seen in the output. Additional CLI configuration commands are also available for more advanced usage.
If you have access to administrator credentials but are no longer logged in as the default system user system:admin, you can log back in as this user at any time as long as the credentials are still present in your CLI config file. The following command logs in and switches to the default project:
$ oc login -u system:admin -n default
2.4.2. Manual configuration of CLI profiles Copy linkLink copied to clipboard!
This section covers more advanced usage of CLI configurations. In most situations, you can use the oc login and oc project commands to log in and switch between contexts and projects.
If you want to manually configure your CLI config files, you can use the oc config command instead of directly modifying the files. The oc config command includes a number of helpful sub-commands for this purpose:
| Subcommand | Usage |
|---|---|
|
| Sets a cluster entry in the CLI config file. If the referenced cluster nickname already exists, the specified information is merged in.
|
|
| Sets a context entry in the CLI config file. If the referenced context nickname already exists, the specified information is merged in.
|
|
| Sets the current context using the specified context nickname.
|
|
| Sets an individual value in the CLI config file.
The |
|
| Unsets individual values in the CLI config file.
The |
|
| Displays the merged CLI configuration currently in use.
Displays the result of the specified CLI config file.
|
Example usage
-
Log in as a user that uses an access token. This token is used by the
aliceuser:
$ oc login https://openshift1.example.com --token=ns7yVhuRNpDM9cgzfhhxQ7bM5s7N2ZVrkZepSRf4LC0
- View the cluster entry automatically created:
$ oc config view
Example output
apiVersion: v1
clusters:
- cluster:
insecure-skip-tls-verify: true
server: https://openshift1.example.com
name: openshift1-example-com
contexts:
- context:
cluster: openshift1-example-com
namespace: default
user: alice/openshift1-example-com
name: default/openshift1-example-com/alice
current-context: default/openshift1-example-com/alice
kind: Config
preferences: {}
users:
- name: alice/openshift1.example.com
user:
token: ns7yVhuRNpDM9cgzfhhxQ7bM5s7N2ZVrkZepSRf4LC0
- Update the current context to have users log in to the desired namespace:
$ oc config set-context `oc config current-context` --namespace=<project_name>
- Examine the current context, to confirm that the changes are implemented:
$ oc whoami -c
All subsequent CLI operations uses the new context, unless otherwise specified by overriding CLI options or until the context is switched.
2.4.3. Load and merge rules Copy linkLink copied to clipboard!
You can follow these rules, when issuing CLI operations for the loading and merging order for the CLI configuration:
CLI config files are retrieved from your workstation, using the following hierarchy and merge rules:
-
If the
--configoption is set, then only that file is loaded. The flag is set once and no merging takes place. -
If the
$KUBECONFIGenvironment variable is set, then it is used. The variable can be a list of paths, and if so the paths are merged together. When a value is modified, it is modified in the file that defines the stanza. When a value is created, it is created in the first file that exists. If no files in the chain exist, then it creates the last file in the list. -
Otherwise, the
~/.kube/configfile is used and no merging takes place.
-
If the
The context to use is determined based on the first match in the following flow:
-
The value of the
--contextoption. -
The
current-contextvalue from the CLI config file. - An empty value is allowed at this stage.
-
The value of the
The user and cluster to use is determined. At this point, you may or may not have a context; they are built based on the first match in the following flow, which is run once for the user and once for the cluster:
-
The value of the
--userfor user name and--clusteroption for cluster name. -
If the
--contextoption is present, then use the context’s value. - An empty value is allowed at this stage.
-
The value of the
The actual cluster information to use is determined. At this point, you may or may not have cluster information. Each piece of the cluster information is built based on the first match in the following flow:
The values of any of the following command-line options:
-
--server, -
--api-version -
--certificate-authority -
--insecure-skip-tls-verify
-
- If cluster information and a value for the attribute is present, then use it.
- If you do not have a server location, then there is an error.
The actual user information to use is determined. Users are built using the same rules as clusters, except that you can only have one authentication technique per user; conflicting techniques cause the operation to fail. Command-line options take precedence over config file values. Valid command-line options are:
-
--auth-path -
--client-certificate -
--client-key -
--token
-
- For any information that is still missing, default values are used and prompts are given for additional information.
2.5. Extending the OpenShift CLI with plugins Copy linkLink copied to clipboard!
You can write and install plugins to build on the default oc commands, allowing you to perform new and more complex tasks with the OpenShift CLI.
2.5.1. Writing CLI plugins Copy linkLink copied to clipboard!
You can write a plugin for the OpenShift CLI in any programming language or script that allows you to write command-line commands. Note that you can not use a plugin to overwrite an existing oc command.
Procedure
This procedure creates a simple Bash plugin that prints a message to the terminal when the oc foo command is issued.
Create a file called
oc-foo.When naming your plugin file, keep the following in mind:
-
The file must begin with
oc-orkubectl-to be recognized as a plugin. -
The file name determines the command that invokes the plugin. For example, a plugin with the file name
oc-foo-barcan be invoked by a command ofoc foo bar. You can also use underscores if you want the command to contain dashes. For example, a plugin with the file nameoc-foo_barcan be invoked by a command ofoc foo-bar.
-
The file must begin with
Add the following contents to the file.
#!/bin/bash # optional argument handling if [[ "$1" == "version" ]] then echo "1.0.0" exit 0 fi # optional argument handling if [[ "$1" == "config" ]] then echo $KUBECONFIG exit 0 fi echo "I am a plugin named kubectl-foo"
After you install this plugin for the CLI, it can be invoked using the oc foo command.
2.5.2. Installing and using CLI plugins Copy linkLink copied to clipboard!
After you write a custom plugin for the OpenShift CLI, you must install the plugin before use.
Prerequisites
-
You must have the
ocCLI tool installed. -
You must have a CLI plugin file that begins with
oc-orkubectl-.
Procedure
If necessary, update the plugin file to be executable.
$ chmod +x <plugin_file>Place the file anywhere in your
PATH, such as/usr/local/bin/.$ sudo mv <plugin_file> /usr/local/bin/.Run
oc plugin listto make sure that the plugin is listed.$ oc plugin listExample output
The following compatible plugins are available: /usr/local/bin/<plugin_file>If your plugin is not listed here, verify that the file begins with
oc-orkubectl-, is executable, and is on yourPATH.Invoke the new command or option introduced by the plugin.
For example, if you built and installed the
kubectl-nsplugin from the Sample plugin repository, you can use the following command to view the current namespace.$ oc nsNote that the command to invoke the plugin depends on the plugin file name. For example, a plugin with the file name of
oc-foo-baris invoked by theoc foo barcommand.
2.6. OpenShift CLI developer command reference Copy linkLink copied to clipboard!
This reference provides descriptions and example commands for OpenShift CLI (oc) developer commands.
Run oc help to list all commands or run oc <command> --help to get additional details for a specific command.
2.6.1. OpenShift CLI (oc) developer commands Copy linkLink copied to clipboard!
2.6.1.1. oc annotate Copy linkLink copied to clipboard!
Update the annotations on a resource
Example usage
# Update pod 'foo' with the annotation 'description' and the value 'my frontend'
# If the same annotation is set multiple times, only the last value will be applied
oc annotate pods foo description='my frontend'
# Update a pod identified by type and name in "pod.json"
oc annotate -f pod.json description='my frontend'
# Update pod 'foo' with the annotation 'description' and the value 'my frontend running nginx', overwriting any existing value
oc annotate --overwrite pods foo description='my frontend running nginx'
# Update all pods in the namespace
oc annotate pods --all description='my frontend running nginx'
# Update pod 'foo' only if the resource is unchanged from version 1
oc annotate pods foo description='my frontend running nginx' --resource-version=1
# Update pod 'foo' by removing an annotation named 'description' if it exists
# Does not require the --overwrite flag
oc annotate pods foo description-
2.6.1.2. oc api-resources Copy linkLink copied to clipboard!
Print the supported API resources on the server
Example usage
# Print the supported API resources
oc api-resources
# Print the supported API resources with more information
oc api-resources -o wide
# Print the supported API resources sorted by a column
oc api-resources --sort-by=name
# Print the supported namespaced resources
oc api-resources --namespaced=true
# Print the supported non-namespaced resources
oc api-resources --namespaced=false
# Print the supported API resources with a specific APIGroup
oc api-resources --api-group=rbac.authorization.k8s.io
2.6.1.3. oc api-versions Copy linkLink copied to clipboard!
Print the supported API versions on the server, in the form of "group/version"
Example usage
# Print the supported API versions
oc api-versions
2.6.1.4. oc apply Copy linkLink copied to clipboard!
Apply a configuration to a resource by file name or stdin
Example usage
# Apply the configuration in pod.json to a pod
oc apply -f ./pod.json
# Apply resources from a directory containing kustomization.yaml - e.g. dir/kustomization.yaml
oc apply -k dir/
# Apply the JSON passed into stdin to a pod
cat pod.json | oc apply -f -
# Apply the configuration from all files that end with '.json'
oc apply -f '*.json'
# Note: --prune is still in Alpha
# Apply the configuration in manifest.yaml that matches label app=nginx and delete all other resources that are not in the file and match label app=nginx
oc apply --prune -f manifest.yaml -l app=nginx
# Apply the configuration in manifest.yaml and delete all the other config maps that are not in the file
oc apply --prune -f manifest.yaml --all --prune-allowlist=core/v1/ConfigMap
2.6.1.5. oc apply edit-last-applied Copy linkLink copied to clipboard!
Edit latest last-applied-configuration annotations of a resource/object
Example usage
# Edit the last-applied-configuration annotations by type/name in YAML
oc apply edit-last-applied deployment/nginx
# Edit the last-applied-configuration annotations by file in JSON
oc apply edit-last-applied -f deploy.yaml -o json
2.6.1.6. oc apply set-last-applied Copy linkLink copied to clipboard!
Set the last-applied-configuration annotation on a live object to match the contents of a file
Example usage
# Set the last-applied-configuration of a resource to match the contents of a file
oc apply set-last-applied -f deploy.yaml
# Execute set-last-applied against each configuration file in a directory
oc apply set-last-applied -f path/
# Set the last-applied-configuration of a resource to match the contents of a file; will create the annotation if it does not already exist
oc apply set-last-applied -f deploy.yaml --create-annotation=true
2.6.1.7. oc apply view-last-applied Copy linkLink copied to clipboard!
View the latest last-applied-configuration annotations of a resource/object
Example usage
# View the last-applied-configuration annotations by type/name in YAML
oc apply view-last-applied deployment/nginx
# View the last-applied-configuration annotations by file in JSON
oc apply view-last-applied -f deploy.yaml -o json
2.6.1.8. oc attach Copy linkLink copied to clipboard!
Attach to a running container
Example usage
# Get output from running pod mypod; use the 'oc.kubernetes.io/default-container' annotation
# for selecting the container to be attached or the first container in the pod will be chosen
oc attach mypod
# Get output from ruby-container from pod mypod
oc attach mypod -c ruby-container
# Switch to raw terminal mode; sends stdin to 'bash' in ruby-container from pod mypod
# and sends stdout/stderr from 'bash' back to the client
oc attach mypod -c ruby-container -i -t
# Get output from the first pod of a replica set named nginx
oc attach rs/nginx
2.6.1.9. oc auth can-i Copy linkLink copied to clipboard!
Check whether an action is allowed
Example usage
# Check to see if I can create pods in any namespace
oc auth can-i create pods --all-namespaces
# Check to see if I can list deployments in my current namespace
oc auth can-i list deployments.apps
# Check to see if service account "foo" of namespace "dev" can list pods in the namespace "prod"
# You must be allowed to use impersonation for the global option "--as"
oc auth can-i list pods --as=system:serviceaccount:dev:foo -n prod
# Check to see if I can do everything in my current namespace ("*" means all)
oc auth can-i '*' '*'
# Check to see if I can get the job named "bar" in namespace "foo"
oc auth can-i list jobs.batch/bar -n foo
# Check to see if I can read pod logs
oc auth can-i get pods --subresource=log
# Check to see if I can access the URL /logs/
oc auth can-i get /logs/
# Check to see if I can approve certificates.k8s.io
oc auth can-i approve certificates.k8s.io
# List all allowed actions in namespace "foo"
oc auth can-i --list --namespace=foo
2.6.1.10. oc auth reconcile Copy linkLink copied to clipboard!
Reconciles rules for RBAC role, role binding, cluster role, and cluster role binding objects
Example usage
# Reconcile RBAC resources from a file
oc auth reconcile -f my-rbac-rules.yaml
2.6.1.11. oc auth whoami Copy linkLink copied to clipboard!
Experimental: Check self subject attributes
Example usage
# Get your subject attributes
oc auth whoami
# Get your subject attributes in JSON format
oc auth whoami -o json
2.6.1.12. oc autoscale Copy linkLink copied to clipboard!
Autoscale a deployment config, deployment, replica set, stateful set, or replication controller
Example usage
# Auto scale a deployment "foo", with the number of pods between 2 and 10, no target CPU utilization specified so a default autoscaling policy will be used
oc autoscale deployment foo --min=2 --max=10
# Auto scale a replication controller "foo", with the number of pods between 1 and 5, target CPU utilization at 80%
oc autoscale rc foo --max=5 --cpu=80%
# Auto scale a deployment "bar", with the number of pods between 3 and 6, target average CPU of 500m and memory of 200Mi
oc autoscale deployment bar --min=3 --max=6 --cpu=500m --memory=200Mi
# Auto scale a deployment "bar", with the number of pods between 2 and 8, target CPU utilization 60% and memory utilization 70%
oc autoscale deployment bar --min=3 --max=6 --cpu=60% --memory=70%
2.6.1.13. oc cancel-build Copy linkLink copied to clipboard!
Cancel running, pending, or new builds
Example usage
# Cancel the build with the given name
oc cancel-build ruby-build-2
# Cancel the named build and print the build logs
oc cancel-build ruby-build-2 --dump-logs
# Cancel the named build and create a new one with the same parameters
oc cancel-build ruby-build-2 --restart
# Cancel multiple builds
oc cancel-build ruby-build-1 ruby-build-2 ruby-build-3
# Cancel all builds created from the 'ruby-build' build config that are in the 'new' state
oc cancel-build bc/ruby-build --state=new
2.6.1.14. oc cluster-info Copy linkLink copied to clipboard!
Display cluster information
Example usage
# Print the address of the control plane and cluster services
oc cluster-info
2.6.1.15. oc cluster-info dump Copy linkLink copied to clipboard!
Dump relevant information for debugging and diagnosis
Example usage
# Dump current cluster state to stdout
oc cluster-info dump
# Dump current cluster state to /path/to/cluster-state
oc cluster-info dump --output-directory=/path/to/cluster-state
# Dump all namespaces to stdout
oc cluster-info dump --all-namespaces
# Dump a set of namespaces to /path/to/cluster-state
oc cluster-info dump --namespaces default,kube-system --output-directory=/path/to/cluster-state
2.6.1.16. oc completion Copy linkLink copied to clipboard!
Output shell completion code for the specified shell (bash, zsh, fish, or powershell)
Example usage
# Installing bash completion on macOS using homebrew
## If running Bash 3.2 included with macOS
brew install bash-completion
## or, if running Bash 4.1+
brew install bash-completion@2
## If oc is installed via homebrew, this should start working immediately
## If you've installed via other means, you may need add the completion to your completion directory
oc completion bash > $(brew --prefix)/etc/bash_completion.d/oc
# Installing bash completion on Linux
## If bash-completion is not installed on Linux, install the 'bash-completion' package
## via your distribution's package manager.
## Load the oc completion code for bash into the current shell
source <(oc completion bash)
## Write bash completion code to a file and source it from .bash_profile
oc completion bash > ~/.kube/completion.bash.inc
printf "
# oc shell completion
source '$HOME/.kube/completion.bash.inc'
" >> $HOME/.bash_profile
source $HOME/.bash_profile
# Load the oc completion code for zsh[1] into the current shell
source <(oc completion zsh)
# Set the oc completion code for zsh[1] to autoload on startup
oc completion zsh > "${fpath[1]}/_oc"
# Load the oc completion code for fish[2] into the current shell
oc completion fish | source
# To load completions for each session, execute once:
oc completion fish > ~/.config/fish/completions/oc.fish
# Load the oc completion code for powershell into the current shell
oc completion powershell | Out-String | Invoke-Expression
# Set oc completion code for powershell to run on startup
## Save completion code to a script and execute in the profile
oc completion powershell > $HOME\.kube\completion.ps1
Add-Content $PROFILE "$HOME\.kube\completion.ps1"
## Execute completion code in the profile
Add-Content $PROFILE "if (Get-Command oc -ErrorAction SilentlyContinue) {
oc completion powershell | Out-String | Invoke-Expression
}"
## Add completion code directly to the $PROFILE script
oc completion powershell >> $PROFILE
2.6.1.17. oc config current-context Copy linkLink copied to clipboard!
Display the current-context
Example usage
# Display the current-context
oc config current-context
2.6.1.18. oc config delete-cluster Copy linkLink copied to clipboard!
Delete the specified cluster from the kubeconfig
Example usage
# Delete the minikube cluster
oc config delete-cluster minikube
2.6.1.19. oc config delete-context Copy linkLink copied to clipboard!
Delete the specified context from the kubeconfig
Example usage
# Delete the context for the minikube cluster
oc config delete-context minikube
2.6.1.20. oc config delete-user Copy linkLink copied to clipboard!
Delete the specified user from the kubeconfig
Example usage
# Delete the minikube user
oc config delete-user minikube
2.6.1.21. oc config get-clusters Copy linkLink copied to clipboard!
Display clusters defined in the kubeconfig
Example usage
# List the clusters that oc knows about
oc config get-clusters
2.6.1.22. oc config get-contexts Copy linkLink copied to clipboard!
Describe one or many contexts
Example usage
# List all the contexts in your kubeconfig file
oc config get-contexts
# Describe one context in your kubeconfig file
oc config get-contexts my-context
2.6.1.23. oc config get-users Copy linkLink copied to clipboard!
Display users defined in the kubeconfig
Example usage
# List the users that oc knows about
oc config get-users
2.6.1.24. oc config new-admin-kubeconfig Copy linkLink copied to clipboard!
Generate, make the server trust, and display a new admin.kubeconfig
Example usage
# Generate a new admin kubeconfig
oc config new-admin-kubeconfig
2.6.1.25. oc config new-kubelet-bootstrap-kubeconfig Copy linkLink copied to clipboard!
Generate, make the server trust, and display a new kubelet /etc/kubernetes/kubeconfig
Example usage
# Generate a new kubelet bootstrap kubeconfig
oc config new-kubelet-bootstrap-kubeconfig
2.6.1.26. oc config refresh-ca-bundle Copy linkLink copied to clipboard!
Update the OpenShift CA bundle by contacting the API server
Example usage
# Refresh the CA bundle for the current context's cluster
oc config refresh-ca-bundle
# Refresh the CA bundle for the cluster named e2e in your kubeconfig
oc config refresh-ca-bundle e2e
# Print the CA bundle from the current OpenShift cluster's API server
oc config refresh-ca-bundle --dry-run
2.6.1.27. oc config rename-context Copy linkLink copied to clipboard!
Rename a context from the kubeconfig file
Example usage
# Rename the context 'old-name' to 'new-name' in your kubeconfig file
oc config rename-context old-name new-name
2.6.1.28. oc config set Copy linkLink copied to clipboard!
Set an individual value in a kubeconfig file
Example usage
# Set the server field on the my-cluster cluster to https://1.2.3.4
oc config set clusters.my-cluster.server https://1.2.3.4
# Set the certificate-authority-data field on the my-cluster cluster
oc config set clusters.my-cluster.certificate-authority-data $(echo "cert_data_here" | base64 -i -)
# Set the cluster field in the my-context context to my-cluster
oc config set contexts.my-context.cluster my-cluster
# Set the client-key-data field in the cluster-admin user using --set-raw-bytes option
oc config set users.cluster-admin.client-key-data cert_data_here --set-raw-bytes=true
2.6.1.29. oc config set-cluster Copy linkLink copied to clipboard!
Set a cluster entry in kubeconfig
Example usage
# Set only the server field on the e2e cluster entry without touching other values
oc config set-cluster e2e --server=https://1.2.3.4
# Embed certificate authority data for the e2e cluster entry
oc config set-cluster e2e --embed-certs --certificate-authority=~/.kube/e2e/kubernetes.ca.crt
# Disable cert checking for the e2e cluster entry
oc config set-cluster e2e --insecure-skip-tls-verify=true
# Set the custom TLS server name to use for validation for the e2e cluster entry
oc config set-cluster e2e --tls-server-name=my-cluster-name
# Set the proxy URL for the e2e cluster entry
oc config set-cluster e2e --proxy-url=https://1.2.3.4
2.6.1.30. oc config set-context Copy linkLink copied to clipboard!
Set a context entry in kubeconfig
Example usage
# Set the user field on the gce context entry without touching other values
oc config set-context gce --user=cluster-admin
2.6.1.31. oc config set-credentials Copy linkLink copied to clipboard!
Set a user entry in kubeconfig
Example usage
# Set only the "client-key" field on the "cluster-admin"
# entry, without touching other values
oc config set-credentials cluster-admin --client-key=~/.kube/admin.key
# Set basic auth for the "cluster-admin" entry
oc config set-credentials cluster-admin --username=admin --password=uXFGweU9l35qcif
# Embed client certificate data in the "cluster-admin" entry
oc config set-credentials cluster-admin --client-certificate=~/.kube/admin.crt --embed-certs=true
# Enable the Google Compute Platform auth provider for the "cluster-admin" entry
oc config set-credentials cluster-admin --auth-provider=gcp
# Enable the OpenID Connect auth provider for the "cluster-admin" entry with additional arguments
oc config set-credentials cluster-admin --auth-provider=oidc --auth-provider-arg=client-id=foo --auth-provider-arg=client-secret=bar
# Remove the "client-secret" config value for the OpenID Connect auth provider for the "cluster-admin" entry
oc config set-credentials cluster-admin --auth-provider=oidc --auth-provider-arg=client-secret-
# Enable new exec auth plugin for the "cluster-admin" entry
oc config set-credentials cluster-admin --exec-command=/path/to/the/executable --exec-api-version=client.authentication.k8s.io/v1beta1
# Enable new exec auth plugin for the "cluster-admin" entry with interactive mode
oc config set-credentials cluster-admin --exec-command=/path/to/the/executable --exec-api-version=client.authentication.k8s.io/v1beta1 --exec-interactive-mode=Never
# Define new exec auth plugin arguments for the "cluster-admin" entry
oc config set-credentials cluster-admin --exec-arg=arg1 --exec-arg=arg2
# Create or update exec auth plugin environment variables for the "cluster-admin" entry
oc config set-credentials cluster-admin --exec-env=key1=val1 --exec-env=key2=val2
# Remove exec auth plugin environment variables for the "cluster-admin" entry
oc config set-credentials cluster-admin --exec-env=var-to-remove-
2.6.1.32. oc config unset Copy linkLink copied to clipboard!
Unset an individual value in a kubeconfig file
Example usage
# Unset the current-context
oc config unset current-context
# Unset namespace in foo context
oc config unset contexts.foo.namespace
2.6.1.33. oc config use-context Copy linkLink copied to clipboard!
Set the current-context in a kubeconfig file
Example usage
# Use the context for the minikube cluster
oc config use-context minikube
2.6.1.34. oc config view Copy linkLink copied to clipboard!
Display merged kubeconfig settings or a specified kubeconfig file
Example usage
# Show merged kubeconfig settings
oc config view
# Show merged kubeconfig settings, raw certificate data, and exposed secrets
oc config view --raw
# Get the password for the e2e user
oc config view -o jsonpath='{.users[?(@.name == "e2e")].user.password}'
2.6.1.35. oc cp Copy linkLink copied to clipboard!
Copy files and directories to and from containers
Example usage
# !!!Important Note!!!
# Requires that the 'tar' binary is present in your container
# image. If 'tar' is not present, 'oc cp' will fail.
#
# For advanced use cases, such as symlinks, wildcard expansion or
# file mode preservation, consider using 'oc exec'.
# Copy /tmp/foo local file to /tmp/bar in a remote pod in namespace <some-namespace>
tar cf - /tmp/foo | oc exec -i -n <some-namespace> <some-pod> -- tar xf - -C /tmp/bar
# Copy /tmp/foo from a remote pod to /tmp/bar locally
oc exec -n <some-namespace> <some-pod> -- tar cf - /tmp/foo | tar xf - -C /tmp/bar
# Copy /tmp/foo_dir local directory to /tmp/bar_dir in a remote pod in the default namespace
oc cp /tmp/foo_dir <some-pod>:/tmp/bar_dir
# Copy /tmp/foo local file to /tmp/bar in a remote pod in a specific container
oc cp /tmp/foo <some-pod>:/tmp/bar -c <specific-container>
# Copy /tmp/foo local file to /tmp/bar in a remote pod in namespace <some-namespace>
oc cp /tmp/foo <some-namespace>/<some-pod>:/tmp/bar
# Copy /tmp/foo from a remote pod to /tmp/bar locally
oc cp <some-namespace>/<some-pod>:/tmp/foo /tmp/bar
2.6.1.36. oc create Copy linkLink copied to clipboard!
Create a resource from a file or from stdin
Example usage
# Create a pod using the data in pod.json
oc create -f ./pod.json
# Create a pod based on the JSON passed into stdin
cat pod.json | oc create -f -
# Edit the data in registry.yaml in JSON then create the resource using the edited data
oc create -f registry.yaml --edit -o json
2.6.1.37. oc create build Copy linkLink copied to clipboard!
Create a new build
Example usage
# Create a new build
oc create build myapp
2.6.1.38. oc create clusterresourcequota Copy linkLink copied to clipboard!
Create a cluster resource quota
Example usage
# Create a cluster resource quota limited to 10 pods
oc create clusterresourcequota limit-bob --project-annotation-selector=openshift.io/requester=user-bob --hard=pods=10
2.6.1.39. oc create clusterrole Copy linkLink copied to clipboard!
Create a cluster role
Example usage
# Create a cluster role named "pod-reader" that allows user to perform "get", "watch" and "list" on pods
oc create clusterrole pod-reader --verb=get,list,watch --resource=pods
# Create a cluster role named "pod-reader" with ResourceName specified
oc create clusterrole pod-reader --verb=get --resource=pods --resource-name=readablepod --resource-name=anotherpod
# Create a cluster role named "foo" with API Group specified
oc create clusterrole foo --verb=get,list,watch --resource=rs.apps
# Create a cluster role named "foo" with SubResource specified
oc create clusterrole foo --verb=get,list,watch --resource=pods,pods/status
# Create a cluster role name "foo" with NonResourceURL specified
oc create clusterrole "foo" --verb=get --non-resource-url=/logs/*
# Create a cluster role name "monitoring" with AggregationRule specified
oc create clusterrole monitoring --aggregation-rule="rbac.example.com/aggregate-to-monitoring=true"
2.6.1.40. oc create clusterrolebinding Copy linkLink copied to clipboard!
Create a cluster role binding for a particular cluster role
Example usage
# Create a cluster role binding for user1, user2, and group1 using the cluster-admin cluster role
oc create clusterrolebinding cluster-admin --clusterrole=cluster-admin --user=user1 --user=user2 --group=group1
2.6.1.41. oc create configmap Copy linkLink copied to clipboard!
Create a config map from a local file, directory or literal value
Example usage
# Create a new config map named my-config based on folder bar
oc create configmap my-config --from-file=path/to/bar
# Create a new config map named my-config with specified keys instead of file basenames on disk
oc create configmap my-config --from-file=key1=/path/to/bar/file1.txt --from-file=key2=/path/to/bar/file2.txt
# Create a new config map named my-config with key1=config1 and key2=config2
oc create configmap my-config --from-literal=key1=config1 --from-literal=key2=config2
# Create a new config map named my-config from the key=value pairs in the file
oc create configmap my-config --from-file=path/to/bar
# Create a new config map named my-config from an env file
oc create configmap my-config --from-env-file=path/to/foo.env --from-env-file=path/to/bar.env
2.6.1.42. oc create cronjob Copy linkLink copied to clipboard!
Create a cron job with the specified name
Example usage
# Create a cron job
oc create cronjob my-job --image=busybox --schedule="*/1 * * * *"
# Create a cron job with a command
oc create cronjob my-job --image=busybox --schedule="*/1 * * * *" -- date
2.6.1.43. oc create deployment Copy linkLink copied to clipboard!
Create a deployment with the specified name
Example usage
# Create a deployment named my-dep that runs the busybox image
oc create deployment my-dep --image=busybox
# Create a deployment with a command
oc create deployment my-dep --image=busybox -- date
# Create a deployment named my-dep that runs the nginx image with 3 replicas
oc create deployment my-dep --image=nginx --replicas=3
# Create a deployment named my-dep that runs the busybox image and expose port 5701
oc create deployment my-dep --image=busybox --port=5701
# Create a deployment named my-dep that runs multiple containers
oc create deployment my-dep --image=busybox:latest --image=ubuntu:latest --image=nginx
2.6.1.44. oc create deploymentconfig Copy linkLink copied to clipboard!
Create a deployment config with default options that uses a given image
Example usage
# Create an nginx deployment config named my-nginx
oc create deploymentconfig my-nginx --image=nginx
2.6.1.45. oc create identity Copy linkLink copied to clipboard!
Manually create an identity (only needed if automatic creation is disabled)
Example usage
# Create an identity with identity provider "acme_ldap" and the identity provider username "adamjones"
oc create identity acme_ldap:adamjones
2.6.1.46. oc create imagestream Copy linkLink copied to clipboard!
Create a new empty image stream
Example usage
# Create a new image stream
oc create imagestream mysql
2.6.1.47. oc create imagestreamtag Copy linkLink copied to clipboard!
Create a new image stream tag
Example usage
# Create a new image stream tag based on an image in a remote registry
oc create imagestreamtag mysql:latest --from-image=myregistry.local/mysql/mysql:5.0
2.6.1.48. oc create ingress Copy linkLink copied to clipboard!
Create an ingress with the specified name
Example usage
# Create a single ingress called 'simple' that directs requests to foo.com/bar to svc
# svc1:8080 with a TLS secret "my-cert"
oc create ingress simple --rule="foo.com/bar=svc1:8080,tls=my-cert"
# Create a catch all ingress of "/path" pointing to service svc:port and Ingress Class as "otheringress"
oc create ingress catch-all --class=otheringress --rule="/path=svc:port"
# Create an ingress with two annotations: ingress.annotation1 and ingress.annotations2
oc create ingress annotated --class=default --rule="foo.com/bar=svc:port" \
--annotation ingress.annotation1=foo \
--annotation ingress.annotation2=bla
# Create an ingress with the same host and multiple paths
oc create ingress multipath --class=default \
--rule="foo.com/=svc:port" \
--rule="foo.com/admin/=svcadmin:portadmin"
# Create an ingress with multiple hosts and the pathType as Prefix
oc create ingress ingress1 --class=default \
--rule="foo.com/path*=svc:8080" \
--rule="bar.com/admin*=svc2:http"
# Create an ingress with TLS enabled using the default ingress certificate and different path types
oc create ingress ingtls --class=default \
--rule="foo.com/=svc:https,tls" \
--rule="foo.com/path/subpath*=othersvc:8080"
# Create an ingress with TLS enabled using a specific secret and pathType as Prefix
oc create ingress ingsecret --class=default \
--rule="foo.com/*=svc:8080,tls=secret1"
# Create an ingress with a default backend
oc create ingress ingdefault --class=default \
--default-backend=defaultsvc:http \
--rule="foo.com/*=svc:8080,tls=secret1"
2.6.1.49. oc create job Copy linkLink copied to clipboard!
Create a job with the specified name
Example usage
# Create a job
oc create job my-job --image=busybox
# Create a job with a command
oc create job my-job --image=busybox -- date
# Create a job from a cron job named "a-cronjob"
oc create job test-job --from=cronjob/a-cronjob
2.6.1.50. oc create namespace Copy linkLink copied to clipboard!
Create a namespace with the specified name
Example usage
# Create a new namespace named my-namespace
oc create namespace my-namespace
2.6.1.51. oc create poddisruptionbudget Copy linkLink copied to clipboard!
Create a pod disruption budget with the specified name
Example usage
# Create a pod disruption budget named my-pdb that will select all pods with the app=rails label
# and require at least one of them being available at any point in time
oc create poddisruptionbudget my-pdb --selector=app=rails --min-available=1
# Create a pod disruption budget named my-pdb that will select all pods with the app=nginx label
# and require at least half of the pods selected to be available at any point in time
oc create pdb my-pdb --selector=app=nginx --min-available=50%
2.6.1.52. oc create priorityclass Copy linkLink copied to clipboard!
Create a priority class with the specified name
Example usage
# Create a priority class named high-priority
oc create priorityclass high-priority --value=1000 --description="high priority"
# Create a priority class named default-priority that is considered as the global default priority
oc create priorityclass default-priority --value=1000 --global-default=true --description="default priority"
# Create a priority class named high-priority that cannot preempt pods with lower priority
oc create priorityclass high-priority --value=1000 --description="high priority" --preemption-policy="Never"
2.6.1.53. oc create quota Copy linkLink copied to clipboard!
Create a quota with the specified name
Example usage
# Create a new resource quota named my-quota
oc create quota my-quota --hard=cpu=1,memory=1G,pods=2,services=3,replicationcontrollers=2,resourcequotas=1,secrets=5,persistentvolumeclaims=10
# Create a new resource quota named best-effort
oc create quota best-effort --hard=pods=100 --scopes=BestEffort
2.6.1.54. oc create role Copy linkLink copied to clipboard!
Create a role with single rule
Example usage
# Create a role named "pod-reader" that allows user to perform "get", "watch" and "list" on pods
oc create role pod-reader --verb=get --verb=list --verb=watch --resource=pods
# Create a role named "pod-reader" with ResourceName specified
oc create role pod-reader --verb=get --resource=pods --resource-name=readablepod --resource-name=anotherpod
# Create a role named "foo" with API Group specified
oc create role foo --verb=get,list,watch --resource=rs.apps
# Create a role named "foo" with SubResource specified
oc create role foo --verb=get,list,watch --resource=pods,pods/status
2.6.1.55. oc create rolebinding Copy linkLink copied to clipboard!
Create a role binding for a particular role or cluster role
Example usage
# Create a role binding for user1, user2, and group1 using the admin cluster role
oc create rolebinding admin --clusterrole=admin --user=user1 --user=user2 --group=group1
# Create a role binding for service account monitoring:sa-dev using the admin role
oc create rolebinding admin-binding --role=admin --serviceaccount=monitoring:sa-dev
2.6.1.56. oc create route edge Copy linkLink copied to clipboard!
Create a route that uses edge TLS termination
Example usage
# Create an edge route named "my-route" that exposes the frontend service
oc create route edge my-route --service=frontend
# Create an edge route that exposes the frontend service and specify a path
# If the route name is omitted, the service name will be used
oc create route edge --service=frontend --path /assets
2.6.1.57. oc create route passthrough Copy linkLink copied to clipboard!
Create a route that uses passthrough TLS termination
Example usage
# Create a passthrough route named "my-route" that exposes the frontend service
oc create route passthrough my-route --service=frontend
# Create a passthrough route that exposes the frontend service and specify
# a host name. If the route name is omitted, the service name will be used
oc create route passthrough --service=frontend --hostname=www.example.com
2.6.1.58. oc create route reencrypt Copy linkLink copied to clipboard!
Create a route that uses reencrypt TLS termination
Example usage
# Create a route named "my-route" that exposes the frontend service
oc create route reencrypt my-route --service=frontend --dest-ca-cert cert.cert
# Create a reencrypt route that exposes the frontend service, letting the
# route name default to the service name and the destination CA certificate
# default to the service CA
oc create route reencrypt --service=frontend
2.6.1.59. oc create secret docker-registry Copy linkLink copied to clipboard!
Create a secret for use with a Docker registry
Example usage
# If you do not already have a .dockercfg file, create a dockercfg secret directly
oc create secret docker-registry my-secret --docker-server=DOCKER_REGISTRY_SERVER --docker-username=DOCKER_USER --docker-password=DOCKER_PASSWORD --docker-email=DOCKER_EMAIL
# Create a new secret named my-secret from ~/.docker/config.json
oc create secret docker-registry my-secret --from-file=path/to/.docker/config.json
2.6.1.60. oc create secret generic Copy linkLink copied to clipboard!
Create a secret from a local file, directory, or literal value
Example usage
# Create a new secret named my-secret with keys for each file in folder bar
oc create secret generic my-secret --from-file=path/to/bar
# Create a new secret named my-secret with specified keys instead of names on disk
oc create secret generic my-secret --from-file=ssh-privatekey=path/to/id_rsa --from-file=ssh-publickey=path/to/id_rsa.pub
# Create a new secret named my-secret with key1=supersecret and key2=topsecret
oc create secret generic my-secret --from-literal=key1=supersecret --from-literal=key2=topsecret
# Create a new secret named my-secret using a combination of a file and a literal
oc create secret generic my-secret --from-file=ssh-privatekey=path/to/id_rsa --from-literal=passphrase=topsecret
# Create a new secret named my-secret from env files
oc create secret generic my-secret --from-env-file=path/to/foo.env --from-env-file=path/to/bar.env
2.6.1.61. oc create secret tls Copy linkLink copied to clipboard!
Create a TLS secret
Example usage
# Create a new TLS secret named tls-secret with the given key pair
oc create secret tls tls-secret --cert=path/to/tls.crt --key=path/to/tls.key
2.6.1.62. oc create service clusterip Copy linkLink copied to clipboard!
Create a ClusterIP service
Example usage
# Create a new ClusterIP service named my-cs
oc create service clusterip my-cs --tcp=5678:8080
# Create a new ClusterIP service named my-cs (in headless mode)
oc create service clusterip my-cs --clusterip="None"
2.6.1.63. oc create service externalname Copy linkLink copied to clipboard!
Create an ExternalName service
Example usage
# Create a new ExternalName service named my-ns
oc create service externalname my-ns --external-name bar.com
2.6.1.64. oc create service loadbalancer Copy linkLink copied to clipboard!
Create a LoadBalancer service
Example usage
# Create a new LoadBalancer service named my-lbs
oc create service loadbalancer my-lbs --tcp=5678:8080
2.6.1.65. oc create service nodeport Copy linkLink copied to clipboard!
Create a NodePort service
Example usage
# Create a new NodePort service named my-ns
oc create service nodeport my-ns --tcp=5678:8080
2.6.1.66. oc create serviceaccount Copy linkLink copied to clipboard!
Create a service account with the specified name
Example usage
# Create a new service account named my-service-account
oc create serviceaccount my-service-account
2.6.1.67. oc create token Copy linkLink copied to clipboard!
Request a service account token
Example usage
# Request a token to authenticate to the kube-apiserver as the service account "myapp" in the current namespace
oc create token myapp
# Request a token for a service account in a custom namespace
oc create token myapp --namespace myns
# Request a token with a custom expiration
oc create token myapp --duration 10m
# Request a token with a custom audience
oc create token myapp --audience https://example.com
# Request a token bound to an instance of a Secret object
oc create token myapp --bound-object-kind Secret --bound-object-name mysecret
# Request a token bound to an instance of a Secret object with a specific UID
oc create token myapp --bound-object-kind Secret --bound-object-name mysecret --bound-object-uid 0d4691ed-659b-4935-a832-355f77ee47cc
2.6.1.68. oc create user Copy linkLink copied to clipboard!
Manually create a user (only needed if automatic creation is disabled)
Example usage
# Create a user with the username "ajones" and the display name "Adam Jones"
oc create user ajones --full-name="Adam Jones"
2.6.1.69. oc create useridentitymapping Copy linkLink copied to clipboard!
Manually map an identity to a user
Example usage
# Map the identity "acme_ldap:adamjones" to the user "ajones"
oc create useridentitymapping acme_ldap:adamjones ajones
2.6.1.70. oc debug Copy linkLink copied to clipboard!
Launch a new instance of a pod for debugging
Example usage
# Start a shell session into a pod using the OpenShift tools image
oc debug
# Debug a currently running deployment by creating a new pod
oc debug deploy/test
# Debug a node as an administrator
oc debug node/master-1
# Debug a Windows node
# Note: the chosen image must match the Windows Server version (2019, 2022) of the node
oc debug node/win-worker-1 --image=mcr.microsoft.com/powershell:lts-nanoserver-ltsc2022
# Launch a shell in a pod using the provided image stream tag
oc debug istag/mysql:latest -n openshift
# Test running a job as a non-root user
oc debug job/test --as-user=1000000
# Debug a specific failing container by running the env command in the 'second' container
oc debug daemonset/test -c second -- /bin/env
# See the pod that would be created to debug
oc debug mypod-9xbc -o yaml
# Debug a resource but launch the debug pod in another namespace
# Note: Not all resources can be debugged using --to-namespace without modification. For example,
# volumes and service accounts are namespace-dependent. Add '-o yaml' to output the debug pod definition
# to disk. If necessary, edit the definition then run 'oc debug -f -' or run without --to-namespace
oc debug mypod-9xbc --to-namespace testns
2.6.1.71. oc delete Copy linkLink copied to clipboard!
Delete resources by file names, stdin, resources and names, or by resources and label selector
Example usage
# Delete a pod using the type and name specified in pod.json
oc delete -f ./pod.json
# Delete resources from a directory containing kustomization.yaml - e.g. dir/kustomization.yaml
oc delete -k dir
# Delete resources from all files that end with '.json'
oc delete -f '*.json'
# Delete a pod based on the type and name in the JSON passed into stdin
cat pod.json | oc delete -f -
# Delete pods and services with same names "baz" and "foo"
oc delete pod,service baz foo
# Delete pods and services with label name=myLabel
oc delete pods,services -l name=myLabel
# Delete a pod with minimal delay
oc delete pod foo --now
# Force delete a pod on a dead node
oc delete pod foo --force
# Delete all pods
oc delete pods --all
# Delete all pods only if the user confirms the deletion
oc delete pods --all --interactive
2.6.1.72. oc describe Copy linkLink copied to clipboard!
Show details of a specific resource or group of resources
Example usage
# Describe a node
oc describe nodes kubernetes-node-emt8.c.myproject.internal
# Describe a pod
oc describe pods/nginx
# Describe a pod identified by type and name in "pod.json"
oc describe -f pod.json
# Describe all pods
oc describe pods
# Describe pods by label name=myLabel
oc describe pods -l name=myLabel
# Describe all pods managed by the 'frontend' replication controller
# (rc-created pods get the name of the rc as a prefix in the pod name)
oc describe pods frontend
2.6.1.73. oc diff Copy linkLink copied to clipboard!
Diff the live version against a would-be applied version
Example usage
# Diff resources included in pod.json
oc diff -f pod.json
# Diff file read from stdin
cat service.yaml | oc diff -f -
2.6.1.74. oc edit Copy linkLink copied to clipboard!
Edit a resource on the server
Example usage
# Edit the service named 'registry'
oc edit svc/registry
# Use an alternative editor
KUBE_EDITOR="nano" oc edit svc/registry
# Edit the job 'myjob' in JSON using the v1 API format
oc edit job.v1.batch/myjob -o json
# Edit the deployment 'mydeployment' in YAML and save the modified config in its annotation
oc edit deployment/mydeployment -o yaml --save-config
# Edit the 'status' subresource for the 'mydeployment' deployment
oc edit deployment mydeployment --subresource='status'
2.6.1.75. oc events Copy linkLink copied to clipboard!
List events
Example usage
# List recent events in the default namespace
oc events
# List recent events in all namespaces
oc events --all-namespaces
# List recent events for the specified pod, then wait for more events and list them as they arrive
oc events --for pod/web-pod-13je7 --watch
# List recent events in YAML format
oc events -oyaml
# List recent only events of type 'Warning' or 'Normal'
oc events --types=Warning,Normal
2.6.1.76. oc exec Copy linkLink copied to clipboard!
Execute a command in a container
Example usage
# Get output from running the 'date' command from pod mypod, using the first container by default
oc exec mypod -- date
# Get output from running the 'date' command in ruby-container from pod mypod
oc exec mypod -c ruby-container -- date
# Switch to raw terminal mode; sends stdin to 'bash' in ruby-container from pod mypod
# and sends stdout/stderr from 'bash' back to the client
oc exec mypod -c ruby-container -i -t -- bash -il
# List contents of /usr from the first container of pod mypod and sort by modification time
# If the command you want to execute in the pod has any flags in common (e.g. -i),
# you must use two dashes (--) to separate your command's flags/arguments
# Also note, do not surround your command and its flags/arguments with quotes
# unless that is how you would execute it normally (i.e., do ls -t /usr, not "ls -t /usr")
oc exec mypod -i -t -- ls -t /usr
# Get output from running 'date' command from the first pod of the deployment mydeployment, using the first container by default
oc exec deploy/mydeployment -- date
# Get output from running 'date' command from the first pod of the service myservice, using the first container by default
oc exec svc/myservice -- date
2.6.1.77. oc explain Copy linkLink copied to clipboard!
Get documentation for a resource
Example usage
# Get the documentation of the resource and its fields
oc explain pods
# Get all the fields in the resource
oc explain pods --recursive
# Get the explanation for deployment in supported api versions
oc explain deployments --api-version=apps/v1
# Get the documentation of a specific field of a resource
oc explain pods.spec.containers
# Get the documentation of resources in different format
oc explain deployment --output=plaintext-openapiv2
2.6.1.78. oc expose Copy linkLink copied to clipboard!
Expose a replicated application as a service or route
Example usage
# Create a route based on service nginx. The new route will reuse nginx's labels
oc expose service nginx
# Create a route and specify your own label and route name
oc expose service nginx -l name=myroute --name=fromdowntown
# Create a route and specify a host name
oc expose service nginx --hostname=www.example.com
# Create a route with a wildcard
oc expose service nginx --hostname=x.example.com --wildcard-policy=Subdomain
# This would be equivalent to *.example.com. NOTE: only hosts are matched by the wildcard; subdomains would not be included
# Expose a deployment configuration as a service and use the specified port
oc expose dc ruby-hello-world --port=8080
# Expose a service as a route in the specified path
oc expose service nginx --path=/nginx
2.6.1.79. oc extract Copy linkLink copied to clipboard!
Extract secrets or config maps to disk
Example usage
# Extract the secret "test" to the current directory
oc extract secret/test
# Extract the config map "nginx" to the /tmp directory
oc extract configmap/nginx --to=/tmp
# Extract the config map "nginx" to STDOUT
oc extract configmap/nginx --to=-
# Extract only the key "nginx.conf" from config map "nginx" to the /tmp directory
oc extract configmap/nginx --to=/tmp --keys=nginx.conf
2.6.1.80. oc get Copy linkLink copied to clipboard!
Display one or many resources
Example usage
# List all pods in ps output format
oc get pods
# List all pods in ps output format with more information (such as node name)
oc get pods -o wide
# List a single replication controller with specified NAME in ps output format
oc get replicationcontroller web
# List deployments in JSON output format, in the "v1" version of the "apps" API group
oc get deployments.v1.apps -o json
# List a single pod in JSON output format
oc get -o json pod web-pod-13je7
# List a pod identified by type and name specified in "pod.yaml" in JSON output format
oc get -f pod.yaml -o json
# List resources from a directory with kustomization.yaml - e.g. dir/kustomization.yaml
oc get -k dir/
# Return only the phase value of the specified pod
oc get -o template pod/web-pod-13je7 --template={{.status.phase}}
# List resource information in custom columns
oc get pod test-pod -o custom-columns=CONTAINER:.spec.containers[0].name,IMAGE:.spec.containers[0].image
# List all replication controllers and services together in ps output format
oc get rc,services
# List one or more resources by their type and names
oc get rc/web service/frontend pods/web-pod-13je7
# List the 'status' subresource for a single pod
oc get pod web-pod-13je7 --subresource status
# List all deployments in namespace 'backend'
oc get deployments.apps --namespace backend
# List all pods existing in all namespaces
oc get pods --all-namespaces
2.6.1.81. oc get-token Copy linkLink copied to clipboard!
Experimental: Get token from external OIDC issuer as credentials exec plugin
Example usage
# Starts an auth code flow to the issuer URL with the client ID and the given extra scopes
oc get-token --client-id=client-id --issuer-url=test.issuer.url --extra-scopes=email,profile
# Starts an auth code flow to the issuer URL with a different callback address
oc get-token --client-id=client-id --issuer-url=test.issuer.url --callback-address=127.0.0.1:8343
2.6.1.82. oc idle Copy linkLink copied to clipboard!
Idle scalable resources
Example usage
# Idle the scalable controllers associated with the services listed in to-idle.txt
$ oc idle --resource-names-file to-idle.txt
2.6.1.83. oc image append Copy linkLink copied to clipboard!
Add layers to images and push them to a registry
Example usage
# Remove the entrypoint on the mysql:latest image
oc image append --from mysql:latest --to myregistry.com/myimage:latest --image '{"Entrypoint":null}'
# Add a new layer to the image
oc image append --from mysql:latest --to myregistry.com/myimage:latest layer.tar.gz
# Add a new layer to the image and store the result on disk
# This results in $(pwd)/v2/mysql/blobs,manifests
oc image append --from mysql:latest --to file://mysql:local layer.tar.gz
# Add a new layer to the image and store the result on disk in a designated directory
# This will result in $(pwd)/mysql-local/v2/mysql/blobs,manifests
oc image append --from mysql:latest --to file://mysql:local --dir mysql-local layer.tar.gz
# Add a new layer to an image that is stored on disk (~/mysql-local/v2/image exists)
oc image append --from-dir ~/mysql-local --to myregistry.com/myimage:latest layer.tar.gz
# Add a new layer to an image that was mirrored to the current directory on disk ($(pwd)/v2/image exists)
oc image append --from-dir v2 --to myregistry.com/myimage:latest layer.tar.gz
# Add a new layer to a multi-architecture image for an os/arch that is different from the system's os/arch
# Note: The first image in the manifest list that matches the filter will be returned when --keep-manifest-list is not specified
oc image append --from docker.io/library/busybox:latest --filter-by-os=linux/s390x --to myregistry.com/myimage:latest layer.tar.gz
# Add a new layer to a multi-architecture image for all the os/arch manifests when keep-manifest-list is specified
oc image append --from docker.io/library/busybox:latest --keep-manifest-list --to myregistry.com/myimage:latest layer.tar.gz
# Add a new layer to a multi-architecture image for all the os/arch manifests that is specified by the filter, while preserving the manifestlist
oc image append --from docker.io/library/busybox:latest --filter-by-os=linux/s390x --keep-manifest-list --to myregistry.com/myimage:latest layer.tar.gz
2.6.1.84. oc image extract Copy linkLink copied to clipboard!
Copy files from an image to the file system
Example usage
# Extract the busybox image into the current directory
oc image extract docker.io/library/busybox:latest
# Extract the busybox image into a designated directory (must exist)
oc image extract docker.io/library/busybox:latest --path /:/tmp/busybox
# Extract the busybox image into the current directory for linux/s390x platform
# Note: Wildcard filter is not supported with extract; pass a single os/arch to extract
oc image extract docker.io/library/busybox:latest --filter-by-os=linux/s390x
# Extract a single file from the image into the current directory
oc image extract docker.io/library/centos:7 --path /bin/bash:.
# Extract all .repo files from the image's /etc/yum.repos.d/ folder into the current directory
oc image extract docker.io/library/centos:7 --path /etc/yum.repos.d/*.repo:.
# Extract all .repo files from the image's /etc/yum.repos.d/ folder into a designated directory (must exist)
# This results in /tmp/yum.repos.d/*.repo on local system
oc image extract docker.io/library/centos:7 --path /etc/yum.repos.d/*.repo:/tmp/yum.repos.d
# Extract an image stored on disk into the current directory ($(pwd)/v2/busybox/blobs,manifests exists)
# --confirm is required because the current directory is not empty
oc image extract file://busybox:local --confirm
# Extract an image stored on disk in a directory other than $(pwd)/v2 into the current directory
# --confirm is required because the current directory is not empty ($(pwd)/busybox-mirror-dir/v2/busybox exists)
oc image extract file://busybox:local --dir busybox-mirror-dir --confirm
# Extract an image stored on disk in a directory other than $(pwd)/v2 into a designated directory (must exist)
oc image extract file://busybox:local --dir busybox-mirror-dir --path /:/tmp/busybox
# Extract the last layer in the image
oc image extract docker.io/library/centos:7[-1]
# Extract the first three layers of the image
oc image extract docker.io/library/centos:7[:3]
# Extract the last three layers of the image
oc image extract docker.io/library/centos:7[-3:]
2.6.1.85. oc image info Copy linkLink copied to clipboard!
Display information about an image
Example usage
# Show information about an image
oc image info quay.io/openshift/cli:latest
# Show information about images matching a wildcard
oc image info quay.io/openshift/cli:4.*
# Show information about a file mirrored to disk under DIR
oc image info --dir=DIR file://library/busybox:latest
# Select which image from a multi-OS image to show
oc image info library/busybox:latest --filter-by-os=linux/arm64
2.6.1.86. oc image mirror Copy linkLink copied to clipboard!
Mirror images from one repository to another
Example usage
# Copy image to another tag
oc image mirror myregistry.com/myimage:latest myregistry.com/myimage:stable
# Copy image to another registry
oc image mirror myregistry.com/myimage:latest docker.io/myrepository/myimage:stable
# Copy all tags starting with mysql to the destination repository
oc image mirror myregistry.com/myimage:mysql* docker.io/myrepository/myimage
# Copy image to disk, creating a directory structure that can be served as a registry
oc image mirror myregistry.com/myimage:latest file://myrepository/myimage:latest
# Copy image to S3 (pull from <bucket>.s3.amazonaws.com/image:latest)
oc image mirror myregistry.com/myimage:latest s3://s3.amazonaws.com/<region>/<bucket>/image:latest
# Copy image to S3 without setting a tag (pull via @<digest>)
oc image mirror myregistry.com/myimage:latest s3://s3.amazonaws.com/<region>/<bucket>/image
# Copy image to multiple locations
oc image mirror myregistry.com/myimage:latest docker.io/myrepository/myimage:stable \
docker.io/myrepository/myimage:dev
# Copy multiple images
oc image mirror myregistry.com/myimage:latest=myregistry.com/other:test \
myregistry.com/myimage:new=myregistry.com/other:target
# Copy manifest list of a multi-architecture image, even if only a single image is found
oc image mirror myregistry.com/myimage:latest=myregistry.com/other:test \
--keep-manifest-list=true
# Copy specific os/arch manifest of a multi-architecture image
# Run 'oc image info myregistry.com/myimage:latest' to see available os/arch for multi-arch images
# Note that with multi-arch images, this results in a new manifest list digest that includes only the filtered manifests
oc image mirror myregistry.com/myimage:latest=myregistry.com/other:test \
--filter-by-os=os/arch
# Copy all os/arch manifests of a multi-architecture image
# Run 'oc image info myregistry.com/myimage:latest' to see list of os/arch manifests that will be mirrored
oc image mirror myregistry.com/myimage:latest=myregistry.com/other:test \
--keep-manifest-list=true
# Note the above command is equivalent to
oc image mirror myregistry.com/myimage:latest=myregistry.com/other:test \
--filter-by-os=.*
# Copy specific os/arch manifest of a multi-architecture image
# Run 'oc image info myregistry.com/myimage:latest' to see available os/arch for multi-arch images
# Note that the target registry may reject a manifest list if the platform specific images do not all exist
# You must use a registry with sparse registry support enabled
oc image mirror myregistry.com/myimage:latest=myregistry.com/other:test \
--filter-by-os=linux/386 \
--keep-manifest-list=true
2.6.1.87. oc import-image Copy linkLink copied to clipboard!
Import images from a container image registry
Example usage
# Import tag latest into a new image stream
oc import-image mystream --from=registry.io/repo/image:latest --confirm
# Update imported data for tag latest in an already existing image stream
oc import-image mystream
# Update imported data for tag stable in an already existing image stream
oc import-image mystream:stable
# Update imported data for all tags in an existing image stream
oc import-image mystream --all
# Update imported data for a tag that points to a manifest list to include the full manifest list
oc import-image mystream --import-mode=PreserveOriginal
# Import all tags into a new image stream
oc import-image mystream --from=registry.io/repo/image --all --confirm
# Import all tags into a new image stream using a custom timeout
oc --request-timeout=5m import-image mystream --from=registry.io/repo/image --all --confirm
2.6.1.88. oc kustomize Copy linkLink copied to clipboard!
Build a kustomization target from a directory or URL
Example usage
# Build the current working directory
oc kustomize
# Build some shared configuration directory
oc kustomize /home/config/production
# Build from github
oc kustomize https://github.com/kubernetes-sigs/kustomize.git/examples/helloWorld?ref=v1.0.6
2.6.1.89. oc label Copy linkLink copied to clipboard!
Update the labels on a resource
Example usage
# Update pod 'foo' with the label 'unhealthy' and the value 'true'
oc label pods foo unhealthy=true
# Update pod 'foo' with the label 'status' and the value 'unhealthy', overwriting any existing value
oc label --overwrite pods foo status=unhealthy
# Update all pods in the namespace
oc label pods --all status=unhealthy
# Update a pod identified by the type and name in "pod.json"
oc label -f pod.json status=unhealthy
# Update pod 'foo' only if the resource is unchanged from version 1
oc label pods foo status=unhealthy --resource-version=1
# Update pod 'foo' by removing a label named 'bar' if it exists
# Does not require the --overwrite flag
oc label pods foo bar-
2.6.1.90. oc login Copy linkLink copied to clipboard!
Log in to a server
Example usage
# Log in interactively
oc login --username=myuser
# Log in to the given server with the given certificate authority file
oc login localhost:8443 --certificate-authority=/path/to/cert.crt
# Log in to the given server with the given credentials (will not prompt interactively)
oc login localhost:8443 --username=myuser --password=mypass
# Log in to the given server through a browser
oc login localhost:8443 --web --callback-port 8280
# Log in to the given server through a browser without opening it automatically (print URL only)
oc login localhost:8443 --web --auto-open-browser=false --callback-port 8280
# Log in to the external OIDC issuer through Auth Code + PKCE by starting a local server listening on port 8080
oc login localhost:8443 --exec-plugin=oc-oidc --client-id=client-id --extra-scopes=email,profile --callback-port=8080
2.6.1.91. oc logout Copy linkLink copied to clipboard!
End the current server session
Example usage
# Log out
oc logout
2.6.1.92. oc logs Copy linkLink copied to clipboard!
Print the logs for a container in a pod
Example usage
# Start streaming the logs of the most recent build of the openldap build config
oc logs -f bc/openldap
# Start streaming the logs of the latest deployment of the mysql deployment config
oc logs -f dc/mysql
# Get the logs of the first deployment for the mysql deployment config. Note that logs
# from older deployments may not exist either because the deployment was successful
# or due to deployment pruning or manual deletion of the deployment
oc logs --version=1 dc/mysql
# Return a snapshot of ruby-container logs from pod backend
oc logs backend -c ruby-container
# Start streaming of ruby-container logs from pod backend
oc logs -f pod/backend -c ruby-container
2.6.1.93. oc new-app Copy linkLink copied to clipboard!
Create a new application
Example usage
# List all local templates and image streams that can be used to create an app
oc new-app --list
# Create an application based on the source code in the current git repository (with a public remote) and a container image
oc new-app . --image=registry/repo/langimage
# Create an application myapp with Docker based build strategy expecting binary input
oc new-app --strategy=docker --binary --name myapp
# Create a Ruby application based on the provided [image]~[source code] combination
oc new-app centos/ruby-25-centos7~https://github.com/sclorg/ruby-ex.git
# Use the public container registry MySQL image to create an app. Generated artifacts will be labeled with db=mysql
oc new-app mysql MYSQL_USER=user MYSQL_PASSWORD=pass MYSQL_DATABASE=testdb -l db=mysql
# Use a MySQL image in a private registry to create an app and override application artifacts' names
oc new-app --image=myregistry.com/mycompany/mysql --name=private
# Use an image with the full manifest list to create an app and override application artifacts' names
oc new-app --image=myregistry.com/mycompany/image --name=private --import-mode=PreserveOriginal
# Create an application from a remote repository using its beta4 branch
oc new-app https://github.com/openshift/ruby-hello-world#beta4
# Create an application based on a stored template, explicitly setting a parameter value
oc new-app --template=ruby-helloworld-sample --param=MYSQL_USER=admin
# Create an application from a remote repository and specify a context directory
oc new-app https://github.com/youruser/yourgitrepo --context-dir=src/build
# Create an application from a remote private repository and specify which existing secret to use
oc new-app https://github.com/youruser/yourgitrepo --source-secret=yoursecret
# Create an application based on a template file, explicitly setting a parameter value
oc new-app --file=./example/myapp/template.json --param=MYSQL_USER=admin
# Search all templates, image streams, and container images for the ones that match "ruby"
oc new-app --search ruby
# Search for "ruby", but only in stored templates (--template, --image-stream and --image
# can be used to filter search results)
oc new-app --search --template=ruby
# Search for "ruby" in stored templates and print the output as YAML
oc new-app --search --template=ruby --output=yaml
2.6.1.94. oc new-build Copy linkLink copied to clipboard!
Create a new build configuration
Example usage
# Create a build config based on the source code in the current git repository (with a public
# remote) and a container image
oc new-build . --image=repo/langimage
# Create a NodeJS build config based on the provided [image]~[source code] combination
oc new-build centos/nodejs-8-centos7~https://github.com/sclorg/nodejs-ex.git
# Create a build config from a remote repository using its beta2 branch
oc new-build https://github.com/openshift/ruby-hello-world#beta2
# Create a build config using a Dockerfile specified as an argument
oc new-build -D $'FROM centos:7\nRUN yum install -y httpd'
# Create a build config from a remote repository and add custom environment variables
oc new-build https://github.com/openshift/ruby-hello-world -e RACK_ENV=development
# Create a build config from a remote private repository and specify which existing secret to use
oc new-build https://github.com/youruser/yourgitrepo --source-secret=yoursecret
# Create a build config using an image with the full manifest list to create an app and override application artifacts' names
oc new-build --image=myregistry.com/mycompany/image --name=private --import-mode=PreserveOriginal
# Create a build config from a remote repository and inject the npmrc into a build
oc new-build https://github.com/openshift/ruby-hello-world --build-secret npmrc:.npmrc
# Create a build config from a remote repository and inject environment data into a build
oc new-build https://github.com/openshift/ruby-hello-world --build-config-map env:config
# Create a build config that gets its input from a remote repository and another container image
oc new-build https://github.com/openshift/ruby-hello-world --source-image=openshift/jenkins-1-centos7 --source-image-path=/var/lib/jenkins:tmp
2.6.1.95. oc new-project Copy linkLink copied to clipboard!
Request a new project
Example usage
# Create a new project with minimal information
oc new-project web-team-dev
# Create a new project with a display name and description
oc new-project web-team-dev --display-name="Web Team Development" --description="Development project for the web team."
2.6.1.96. oc observe Copy linkLink copied to clipboard!
Observe changes to resources and react to them (experimental)
Example usage
# Observe changes to services
oc observe services
# Observe changes to services, including the clusterIP and invoke a script for each
oc observe services --template '{ .spec.clusterIP }' -- register_dns.sh
# Observe changes to services filtered by a label selector
oc observe services -l regist-dns=true --template '{ .spec.clusterIP }' -- register_dns.sh
2.6.1.97. oc patch Copy linkLink copied to clipboard!
Update fields of a resource
Example usage
# Partially update a node using a strategic merge patch, specifying the patch as JSON
oc patch node k8s-node-1 -p '{"spec":{"unschedulable":true}}'
# Partially update a node using a strategic merge patch, specifying the patch as YAML
oc patch node k8s-node-1 -p $'spec:\n unschedulable: true'
# Partially update a node identified by the type and name specified in "node.json" using strategic merge patch
oc patch -f node.json -p '{"spec":{"unschedulable":true}}'
# Update a container's image; spec.containers[*].name is required because it's a merge key
oc patch pod valid-pod -p '{"spec":{"containers":[{"name":"kubernetes-serve-hostname","image":"new image"}]}}'
# Update a container's image using a JSON patch with positional arrays
oc patch pod valid-pod --type='json' -p='[{"op": "replace", "path": "/spec/containers/0/image", "value":"new image"}]'
# Update a deployment's replicas through the 'scale' subresource using a merge patch
oc patch deployment nginx-deployment --subresource='scale' --type='merge' -p '{"spec":{"replicas":2}}'
2.6.1.98. oc plugin Copy linkLink copied to clipboard!
Provides utilities for interacting with plugins
Example usage
# List all available plugins
oc plugin list
# List only binary names of available plugins without paths
oc plugin list --name-only
2.6.1.99. oc plugin list Copy linkLink copied to clipboard!
List all visible plugin executables on a user’s PATH
Example usage
# List all available plugins
oc plugin list
# List only binary names of available plugins without paths
oc plugin list --name-only
2.6.1.100. oc policy add-role-to-user Copy linkLink copied to clipboard!
Add a role to users or service accounts for the current project
Example usage
# Add the 'view' role to user1 for the current project
oc policy add-role-to-user view user1
# Add the 'edit' role to serviceaccount1 for the current project
oc policy add-role-to-user edit -z serviceaccount1
2.6.1.101. oc policy scc-review Copy linkLink copied to clipboard!
Check which service account can create a pod
Example usage
# Check whether service accounts sa1 and sa2 can admit a pod with a template pod spec specified in my_resource.yaml
# Service Account specified in myresource.yaml file is ignored
oc policy scc-review -z sa1,sa2 -f my_resource.yaml
# Check whether service accounts system:serviceaccount:bob:default can admit a pod with a template pod spec specified in my_resource.yaml
oc policy scc-review -z system:serviceaccount:bob:default -f my_resource.yaml
# Check whether the service account specified in my_resource_with_sa.yaml can admit the pod
oc policy scc-review -f my_resource_with_sa.yaml
# Check whether the default service account can admit the pod; default is taken since no service account is defined in myresource_with_no_sa.yaml
oc policy scc-review -f myresource_with_no_sa.yaml
2.6.1.102. oc policy scc-subject-review Copy linkLink copied to clipboard!
Check whether a user or a service account can create a pod
Example usage
# Check whether user bob can create a pod specified in myresource.yaml
oc policy scc-subject-review -u bob -f myresource.yaml
# Check whether user bob who belongs to projectAdmin group can create a pod specified in myresource.yaml
oc policy scc-subject-review -u bob -g projectAdmin -f myresource.yaml
# Check whether a service account specified in the pod template spec in myresourcewithsa.yaml can create the pod
oc policy scc-subject-review -f myresourcewithsa.yaml
2.6.1.103. oc port-forward Copy linkLink copied to clipboard!
Forward one or more local ports to a pod
Example usage
# Listen on ports 5000 and 6000 locally, forwarding data to/from ports 5000 and 6000 in the pod
oc port-forward pod/mypod 5000 6000
# Listen on ports 5000 and 6000 locally, forwarding data to/from ports 5000 and 6000 in a pod selected by the deployment
oc port-forward deployment/mydeployment 5000 6000
# Listen on port 8443 locally, forwarding to the targetPort of the service's port named "https" in a pod selected by the service
oc port-forward service/myservice 8443:https
# Listen on port 8888 locally, forwarding to 5000 in the pod
oc port-forward pod/mypod 8888:5000
# Listen on port 8888 on all addresses, forwarding to 5000 in the pod
oc port-forward --address 0.0.0.0 pod/mypod 8888:5000
# Listen on port 8888 on localhost and selected IP, forwarding to 5000 in the pod
oc port-forward --address localhost,10.19.21.23 pod/mypod 8888:5000
# Listen on a random port locally, forwarding to 5000 in the pod
oc port-forward pod/mypod :5000
2.6.1.104. oc process Copy linkLink copied to clipboard!
Process a template into list of resources
Example usage
# Convert the template.json file into a resource list and pass to create
oc process -f template.json | oc create -f -
# Process a file locally instead of contacting the server
oc process -f template.json --local -o yaml
# Process template while passing a user-defined label
oc process -f template.json -l name=mytemplate
# Convert a stored template into a resource list
oc process foo
# Convert a stored template into a resource list by setting/overriding parameter values
oc process foo PARM1=VALUE1 PARM2=VALUE2
# Convert a template stored in different namespace into a resource list
oc process openshift//foo
# Convert template.json into a resource list
cat template.json | oc process -f -
2.6.1.105. oc project Copy linkLink copied to clipboard!
Switch to another project
Example usage
# Switch to the 'myapp' project
oc project myapp
# Display the project currently in use
oc project
2.6.1.106. oc projects Copy linkLink copied to clipboard!
Display existing projects
Example usage
# List all projects
oc projects
2.6.1.107. oc proxy Copy linkLink copied to clipboard!
Run a proxy to the Kubernetes API server
Example usage
# To proxy all of the Kubernetes API and nothing else
oc proxy --api-prefix=/
# To proxy only part of the Kubernetes API and also some static files
# You can get pods info with 'curl localhost:8001/api/v1/pods'
oc proxy --www=/my/files --www-prefix=/static/ --api-prefix=/api/
# To proxy the entire Kubernetes API at a different root
# You can get pods info with 'curl localhost:8001/custom/api/v1/pods'
oc proxy --api-prefix=/custom/
# Run a proxy to the Kubernetes API server on port 8011, serving static content from ./local/www/
oc proxy --port=8011 --www=./local/www/
# Run a proxy to the Kubernetes API server on an arbitrary local port
# The chosen port for the server will be output to stdout
oc proxy --port=0
# Run a proxy to the Kubernetes API server, changing the API prefix to k8s-api
# This makes e.g. the pods API available at localhost:8001/k8s-api/v1/pods/
oc proxy --api-prefix=/k8s-api
2.6.1.108. oc registry login Copy linkLink copied to clipboard!
Log in to the integrated registry
Example usage
# Log in to the integrated registry
oc registry login
# Log in to different registry using BASIC auth credentials
oc registry login --registry quay.io/myregistry --auth-basic=USER:PASS
2.6.1.109. oc replace Copy linkLink copied to clipboard!
Replace a resource by file name or stdin
Example usage
# Replace a pod using the data in pod.json
oc replace -f ./pod.json
# Replace a pod based on the JSON passed into stdin
cat pod.json | oc replace -f -
# Update a single-container pod's image version (tag) to v4
oc get pod mypod -o yaml | sed 's/\(image: myimage\):.*$/\1:v4/' | oc replace -f -
# Force replace, delete and then re-create the resource
oc replace --force -f ./pod.json
2.6.1.110. oc rollback Copy linkLink copied to clipboard!
Revert part of an application back to a previous deployment
Example usage
# Perform a rollback to the last successfully completed deployment for a deployment config
oc rollback frontend
# See what a rollback to version 3 will look like, but do not perform the rollback
oc rollback frontend --to-version=3 --dry-run
# Perform a rollback to a specific deployment
oc rollback frontend-2
# Perform the rollback manually by piping the JSON of the new config back to oc
oc rollback frontend -o json | oc replace dc/frontend -f -
# Print the updated deployment configuration in JSON format instead of performing the rollback
oc rollback frontend -o json
2.6.1.111. oc rollout Copy linkLink copied to clipboard!
Manage the rollout of a resource
Example usage
# Roll back to the previous deployment
oc rollout undo deployment/abc
# Check the rollout status of a daemonset
oc rollout status daemonset/foo
# Restart a deployment
oc rollout restart deployment/abc
# Restart deployments with the 'app=nginx' label
oc rollout restart deployment --selector=app=nginx
2.6.1.112. oc rollout cancel Copy linkLink copied to clipboard!
Cancel the in-progress deployment
Example usage
# Cancel the in-progress deployment based on 'nginx'
oc rollout cancel dc/nginx
2.6.1.113. oc rollout history Copy linkLink copied to clipboard!
View rollout history
Example usage
# View the rollout history of a deployment
oc rollout history deployment/abc
# View the details of daemonset revision 3
oc rollout history daemonset/abc --revision=3
2.6.1.114. oc rollout latest Copy linkLink copied to clipboard!
Start a new rollout for a deployment config with the latest state from its triggers
Example usage
# Start a new rollout based on the latest images defined in the image change triggers
oc rollout latest dc/nginx
# Print the rolled out deployment config
oc rollout latest dc/nginx -o json
2.6.1.115. oc rollout pause Copy linkLink copied to clipboard!
Mark the provided resource as paused
Example usage
# Mark the nginx deployment as paused
# Any current state of the deployment will continue its function; new updates
# to the deployment will not have an effect as long as the deployment is paused
oc rollout pause deployment/nginx
2.6.1.116. oc rollout restart Copy linkLink copied to clipboard!
Restart a resource
Example usage
# Restart all deployments in the test-namespace namespace
oc rollout restart deployment -n test-namespace
# Restart a deployment
oc rollout restart deployment/nginx
# Restart a daemon set
oc rollout restart daemonset/abc
# Restart deployments with the app=nginx label
oc rollout restart deployment --selector=app=nginx
2.6.1.117. oc rollout resume Copy linkLink copied to clipboard!
Resume a paused resource
Example usage
# Resume an already paused deployment
oc rollout resume deployment/nginx
2.6.1.118. oc rollout retry Copy linkLink copied to clipboard!
Retry the latest failed rollout
Example usage
# Retry the latest failed deployment based on 'frontend'
# The deployer pod and any hook pods are deleted for the latest failed deployment
oc rollout retry dc/frontend
2.6.1.119. oc rollout status Copy linkLink copied to clipboard!
Show the status of the rollout
Example usage
# Watch the rollout status of a deployment
oc rollout status deployment/nginx
2.6.1.120. oc rollout undo Copy linkLink copied to clipboard!
Undo a previous rollout
Example usage
# Roll back to the previous deployment
oc rollout undo deployment/abc
# Roll back to daemonset revision 3
oc rollout undo daemonset/abc --to-revision=3
# Roll back to the previous deployment with dry-run
oc rollout undo --dry-run=server deployment/abc
2.6.1.121. oc rsh Copy linkLink copied to clipboard!
Start a shell session in a container
Example usage
# Open a shell session on the first container in pod 'foo'
oc rsh foo
# Open a shell session on the first container in pod 'foo' and namespace 'bar'
# (Note that oc client specific arguments must come before the resource name and its arguments)
oc rsh -n bar foo
# Run the command 'cat /etc/resolv.conf' inside pod 'foo'
oc rsh foo cat /etc/resolv.conf
# See the configuration of your internal registry
oc rsh dc/docker-registry cat config.yml
# Open a shell session on the container named 'index' inside a pod of your job
oc rsh -c index job/scheduled
2.6.1.122. oc rsync Copy linkLink copied to clipboard!
Copy files between a local file system and a pod
Example usage
# Synchronize a local directory with a pod directory
oc rsync ./local/dir/ POD:/remote/dir
# Synchronize a pod directory with a local directory
oc rsync POD:/remote/dir/ ./local/dir
2.6.1.123. oc run Copy linkLink copied to clipboard!
Run a particular image on the cluster
Example usage
# Start a nginx pod
oc run nginx --image=nginx
# Start a hazelcast pod and let the container expose port 5701
oc run hazelcast --image=hazelcast/hazelcast --port=5701
# Start a hazelcast pod and set environment variables "DNS_DOMAIN=cluster" and "POD_NAMESPACE=default" in the container
oc run hazelcast --image=hazelcast/hazelcast --env="DNS_DOMAIN=cluster" --env="POD_NAMESPACE=default"
# Start a hazelcast pod and set labels "app=hazelcast" and "env=prod" in the container
oc run hazelcast --image=hazelcast/hazelcast --labels="app=hazelcast,env=prod"
# Dry run; print the corresponding API objects without creating them
oc run nginx --image=nginx --dry-run=client
# Start a nginx pod, but overload the spec with a partial set of values parsed from JSON
oc run nginx --image=nginx --overrides='{ "apiVersion": "v1", "spec": { ... } }'
# Start a busybox pod and keep it in the foreground, don't restart it if it exits
oc run -i -t busybox --image=busybox --restart=Never
# Start the nginx pod using the default command, but use custom arguments (arg1 .. argN) for that command
oc run nginx --image=nginx -- <arg1> <arg2> ... <argN>
# Start the nginx pod using a different command and custom arguments
oc run nginx --image=nginx --command -- <cmd> <arg1> ... <argN>
2.6.1.124. oc scale Copy linkLink copied to clipboard!
Set a new size for a deployment, replica set, or replication controller
Example usage
# Scale a replica set named 'foo' to 3
oc scale --replicas=3 rs/foo
# Scale a resource identified by type and name specified in "foo.yaml" to 3
oc scale --replicas=3 -f foo.yaml
# If the deployment named mysql's current size is 2, scale mysql to 3
oc scale --current-replicas=2 --replicas=3 deployment/mysql
# Scale multiple replication controllers
oc scale --replicas=5 rc/example1 rc/example2 rc/example3
# Scale stateful set named 'web' to 3
oc scale --replicas=3 statefulset/web
2.6.1.125. oc secrets link Copy linkLink copied to clipboard!
Link secrets to a service account
Example usage
# Add an image pull secret to a service account to automatically use it for pulling pod images
oc secrets link serviceaccount-name pull-secret --for=pull
# Add an image pull secret to a service account to automatically use it for both pulling and pushing build images
oc secrets link builder builder-image-secret --for=pull,mount
2.6.1.126. oc secrets unlink Copy linkLink copied to clipboard!
Detach secrets from a service account
Example usage
# Unlink a secret currently associated with a service account
oc secrets unlink serviceaccount-name secret-name another-secret-name ...
2.6.1.127. oc set build-hook Copy linkLink copied to clipboard!
Update a build hook on a build config
Example usage
# Clear post-commit hook on a build config
oc set build-hook bc/mybuild --post-commit --remove
# Set the post-commit hook to execute a test suite using a new entrypoint
oc set build-hook bc/mybuild --post-commit --command -- /bin/bash -c /var/lib/test-image.sh
# Set the post-commit hook to execute a shell script
oc set build-hook bc/mybuild --post-commit --script="/var/lib/test-image.sh param1 param2 && /var/lib/done.sh"
2.6.1.128. oc set build-secret Copy linkLink copied to clipboard!
Update a build secret on a build config
Example usage
# Clear the push secret on a build config
oc set build-secret --push --remove bc/mybuild
# Set the pull secret on a build config
oc set build-secret --pull bc/mybuild mysecret
# Set the push and pull secret on a build config
oc set build-secret --push --pull bc/mybuild mysecret
# Set the source secret on a set of build configs matching a selector
oc set build-secret --source -l app=myapp gitsecret
2.6.1.129. oc set data Copy linkLink copied to clipboard!
Update the data within a config map or secret
Example usage
# Set the 'password' key of a secret
oc set data secret/foo password=this_is_secret
# Remove the 'password' key from a secret
oc set data secret/foo password-
# Update the 'haproxy.conf' key of a config map from a file on disk
oc set data configmap/bar --from-file=../haproxy.conf
# Update a secret with the contents of a directory, one key per file
oc set data secret/foo --from-file=secret-dir
2.6.1.130. oc set deployment-hook Copy linkLink copied to clipboard!
Update a deployment hook on a deployment config
Example usage
# Clear pre and post hooks on a deployment config
oc set deployment-hook dc/myapp --remove --pre --post
# Set the pre deployment hook to execute a db migration command for an application
# using the data volume from the application
oc set deployment-hook dc/myapp --pre --volumes=data -- /var/lib/migrate-db.sh
# Set a mid deployment hook along with additional environment variables
oc set deployment-hook dc/myapp --mid --volumes=data -e VAR1=value1 -e VAR2=value2 -- /var/lib/prepare-deploy.sh
2.6.1.131. oc set env Copy linkLink copied to clipboard!
Update environment variables on a pod template
Example usage
# Update deployment config 'myapp' with a new environment variable
oc set env dc/myapp STORAGE_DIR=/local
# List the environment variables defined on a build config 'sample-build'
oc set env bc/sample-build --list
# List the environment variables defined on all pods
oc set env pods --all --list
# Output modified build config in YAML
oc set env bc/sample-build STORAGE_DIR=/data -o yaml
# Update all containers in all replication controllers in the project to have ENV=prod
oc set env rc --all ENV=prod
# Import environment from a secret
oc set env --from=secret/mysecret dc/myapp
# Import environment from a config map with a prefix
oc set env --from=configmap/myconfigmap --prefix=MYSQL_ dc/myapp
# Remove the environment variable ENV from container 'c1' in all deployment configs
oc set env dc --all --containers="c1" ENV-
# Remove the environment variable ENV from a deployment config definition on disk and
# update the deployment config on the server
oc set env -f dc.json ENV-
# Set some of the local shell environment into a deployment config on the server
oc set env | grep RAILS_ | oc env -e - dc/myapp
2.6.1.132. oc set image Copy linkLink copied to clipboard!
Update the image of a pod template
Example usage
# Set a deployment config's nginx container image to 'nginx:1.9.1', and its busybox container image to 'busybox'.
oc set image dc/nginx busybox=busybox nginx=nginx:1.9.1
# Set a deployment config's app container image to the image referenced by the imagestream tag 'openshift/ruby:2.3'.
oc set image dc/myapp app=openshift/ruby:2.3 --source=imagestreamtag
# Update all deployments' and rc's nginx container's image to 'nginx:1.9.1'
oc set image deployments,rc nginx=nginx:1.9.1 --all
# Update image of all containers of daemonset abc to 'nginx:1.9.1'
oc set image daemonset abc *=nginx:1.9.1
# Print result (in YAML format) of updating nginx container image from local file, without hitting the server
oc set image -f path/to/file.yaml nginx=nginx:1.9.1 --local -o yaml
2.6.1.133. oc set image-lookup Copy linkLink copied to clipboard!
Change how images are resolved when deploying applications
Example usage
# Print all of the image streams and whether they resolve local names
oc set image-lookup
# Use local name lookup on image stream mysql
oc set image-lookup mysql
# Force a deployment to use local name lookup
oc set image-lookup deploy/mysql
# Show the current status of the deployment lookup
oc set image-lookup deploy/mysql --list
# Disable local name lookup on image stream mysql
oc set image-lookup mysql --enabled=false
# Set local name lookup on all image streams
oc set image-lookup --all
2.6.1.134. oc set probe Copy linkLink copied to clipboard!
Update a probe on a pod template
Example usage
# Clear both readiness and liveness probes off all containers
oc set probe dc/myapp --remove --readiness --liveness
# Set an exec action as a liveness probe to run 'echo ok'
oc set probe dc/myapp --liveness -- echo ok
# Set a readiness probe to try to open a TCP socket on 3306
oc set probe rc/mysql --readiness --open-tcp=3306
# Set an HTTP startup probe for port 8080 and path /healthz over HTTP on the pod IP
oc set probe dc/webapp --startup --get-url=http://:8080/healthz
# Set an HTTP readiness probe for port 8080 and path /healthz over HTTP on the pod IP
oc set probe dc/webapp --readiness --get-url=http://:8080/healthz
# Set an HTTP readiness probe over HTTPS on 127.0.0.1 for a hostNetwork pod
oc set probe dc/router --readiness --get-url=https://127.0.0.1:1936/stats
# Set only the initial-delay-seconds field on all deployments
oc set probe dc --all --readiness --initial-delay-seconds=30
2.6.1.135. oc set resources Copy linkLink copied to clipboard!
Update resource requests/limits on objects with pod templates
Example usage
# Set a deployments nginx container CPU limits to "200m and memory to 512Mi"
oc set resources deployment nginx -c=nginx --limits=cpu=200m,memory=512Mi
# Set the resource request and limits for all containers in nginx
oc set resources deployment nginx --limits=cpu=200m,memory=512Mi --requests=cpu=100m,memory=256Mi
# Remove the resource requests for resources on containers in nginx
oc set resources deployment nginx --limits=cpu=0,memory=0 --requests=cpu=0,memory=0
# Print the result (in YAML format) of updating nginx container limits locally, without hitting the server
oc set resources -f path/to/file.yaml --limits=cpu=200m,memory=512Mi --local -o yaml
2.6.1.136. oc set route-backends Copy linkLink copied to clipboard!
Update the backends for a route
Example usage
# Print the backends on the route 'web'
oc set route-backends web
# Set two backend services on route 'web' with 2/3rds of traffic going to 'a'
oc set route-backends web a=2 b=1
# Increase the traffic percentage going to b by 10%% relative to a
oc set route-backends web --adjust b=+10%%
# Set traffic percentage going to b to 10%% of the traffic going to a
oc set route-backends web --adjust b=10%%
# Set weight of b to 10
oc set route-backends web --adjust b=10
# Set the weight to all backends to zero
oc set route-backends web --zero
2.6.1.137. oc set selector Copy linkLink copied to clipboard!
Set the selector on a resource
Example usage
# Set the labels and selector before creating a deployment/service pair.
oc create service clusterip my-svc --clusterip="None" -o yaml --dry-run | oc set selector --local -f - 'environment=qa' -o yaml | oc create -f -
oc create deployment my-dep -o yaml --dry-run | oc label --local -f - environment=qa -o yaml | oc create -f -
2.6.1.138. oc set serviceaccount Copy linkLink copied to clipboard!
Update the service account of a resource
Example usage
# Set deployment nginx-deployment's service account to serviceaccount1
oc set serviceaccount deployment nginx-deployment serviceaccount1
# Print the result (in YAML format) of updated nginx deployment with service account from a local file, without hitting the API server
oc set sa -f nginx-deployment.yaml serviceaccount1 --local --dry-run -o yaml
2.6.1.139. oc set subject Copy linkLink copied to clipboard!
Update the user, group, or service account in a role binding or cluster role binding
Example usage
# Update a cluster role binding for serviceaccount1
oc set subject clusterrolebinding admin --serviceaccount=namespace:serviceaccount1
# Update a role binding for user1, user2, and group1
oc set subject rolebinding admin --user=user1 --user=user2 --group=group1
# Print the result (in YAML format) of updating role binding subjects locally, without hitting the server
oc create rolebinding admin --role=admin --user=admin -o yaml --dry-run | oc set subject --local -f - --user=foo -o yaml
2.6.1.140. oc set triggers Copy linkLink copied to clipboard!
Update the triggers on one or more objects
Example usage
# Print the triggers on the deployment config 'myapp'
oc set triggers dc/myapp
# Set all triggers to manual
oc set triggers dc/myapp --manual
# Enable all automatic triggers
oc set triggers dc/myapp --auto
# Reset the GitHub webhook on a build to a new, generated secret
oc set triggers bc/webapp --from-github
oc set triggers bc/webapp --from-webhook
# Remove all triggers
oc set triggers bc/webapp --remove-all
# Stop triggering on config change
oc set triggers dc/myapp --from-config --remove
# Add an image trigger to a build config
oc set triggers bc/webapp --from-image=namespace1/image:latest
# Add an image trigger to a stateful set on the main container
oc set triggers statefulset/db --from-image=namespace1/image:latest -c main
2.6.1.141. oc set volumes Copy linkLink copied to clipboard!
Update volumes on a pod template
Example usage
# List volumes defined on all deployment configs in the current project
oc set volume dc --all
# Add a new empty dir volume to deployment config (dc) 'myapp' mounted under
# /var/lib/myapp
oc set volume dc/myapp --add --mount-path=/var/lib/myapp
# Use an existing persistent volume claim (PVC) to overwrite an existing volume 'v1'
oc set volume dc/myapp --add --name=v1 -t pvc --claim-name=pvc1 --overwrite
# Remove volume 'v1' from deployment config 'myapp'
oc set volume dc/myapp --remove --name=v1
# Create a new persistent volume claim that overwrites an existing volume 'v1'
oc set volume dc/myapp --add --name=v1 -t pvc --claim-size=1G --overwrite
# Change the mount point for volume 'v1' to /data
oc set volume dc/myapp --add --name=v1 -m /data --overwrite
# Modify the deployment config by removing volume mount "v1" from container "c1"
# (and by removing the volume "v1" if no other containers have volume mounts that reference it)
oc set volume dc/myapp --remove --name=v1 --containers=c1
# Add new volume based on a more complex volume source (AWS EBS, GCE PD,
# Ceph, Gluster, NFS, ISCSI, ...)
oc set volume dc/myapp --add -m /data --source=<json-string>
2.6.1.142. oc start-build Copy linkLink copied to clipboard!
Start a new build
Example usage
# Starts build from build config "hello-world"
oc start-build hello-world
# Starts build from a previous build "hello-world-1"
oc start-build --from-build=hello-world-1
# Use the contents of a directory as build input
oc start-build hello-world --from-dir=src/
# Send the contents of a Git repository to the server from tag 'v2'
oc start-build hello-world --from-repo=../hello-world --commit=v2
# Start a new build for build config "hello-world" and watch the logs until the build
# completes or fails
oc start-build hello-world --follow
# Start a new build for build config "hello-world" and wait until the build completes. It
# exits with a non-zero return code if the build fails
oc start-build hello-world --wait
2.6.1.143. oc status Copy linkLink copied to clipboard!
Show an overview of the current project
Example usage
# See an overview of the current project
oc status
# Export the overview of the current project in an svg file
oc status -o dot | dot -T svg -o project.svg
# See an overview of the current project including details for any identified issues
oc status --suggest
2.6.1.144. oc tag Copy linkLink copied to clipboard!
Tag existing images into image streams
Example usage
# Tag the current image for the image stream 'openshift/ruby' and tag '2.0' into the image stream 'yourproject/ruby with tag 'tip'
oc tag openshift/ruby:2.0 yourproject/ruby:tip
# Tag a specific image
oc tag openshift/ruby@sha256:6b646fa6bf5e5e4c7fa41056c27910e679c03ebe7f93e361e6515a9da7e258cc yourproject/ruby:tip
# Tag an external container image
oc tag --source=docker openshift/origin-control-plane:latest yourproject/ruby:tip
# Tag an external container image and request pullthrough for it
oc tag --source=docker openshift/origin-control-plane:latest yourproject/ruby:tip --reference-policy=local
# Tag an external container image and include the full manifest list
oc tag --source=docker openshift/origin-control-plane:latest yourproject/ruby:tip --import-mode=PreserveOriginal
# Remove the specified spec tag from an image stream
oc tag openshift/origin-control-plane:latest -d
2.6.1.145. oc version Copy linkLink copied to clipboard!
Print the client and server version information
Example usage
# Print the OpenShift client, kube-apiserver, and openshift-apiserver version information for the current context
oc version
# Print the OpenShift client, kube-apiserver, and openshift-apiserver version numbers for the current context in JSON format
oc version --output json
# Print the OpenShift client version information for the current context
oc version --client
2.6.1.146. oc wait Copy linkLink copied to clipboard!
Experimental: Wait for a specific condition on one or many resources
Example usage
# Wait for the pod "busybox1" to contain the status condition of type "Ready"
oc wait --for=condition=Ready pod/busybox1
# The default value of status condition is true; you can wait for other targets after an equal delimiter (compared after Unicode simple case folding, which is a more general form of case-insensitivity)
oc wait --for=condition=Ready=false pod/busybox1
# Wait for the pod "busybox1" to contain the status phase to be "Running"
oc wait --for=jsonpath='{.status.phase}'=Running pod/busybox1
# Wait for pod "busybox1" to be Ready
oc wait --for='jsonpath={.status.conditions[?(@.type=="Ready")].status}=True' pod/busybox1
# Wait for the service "loadbalancer" to have ingress
oc wait --for=jsonpath='{.status.loadBalancer.ingress}' service/loadbalancer
# Wait for the secret "busybox1" to be created, with a timeout of 30s
oc create secret generic busybox1
oc wait --for=create secret/busybox1 --timeout=30s
# Wait for the pod "busybox1" to be deleted, with a timeout of 60s, after having issued the "delete" command
oc delete pod/busybox1
oc wait --for=delete pod/busybox1 --timeout=60s
2.6.1.147. oc whoami Copy linkLink copied to clipboard!
Return information about the current session
Example usage
# Display the currently authenticated user
oc whoami
2.7. OpenShift CLI administrator command reference Copy linkLink copied to clipboard!
This reference provides descriptions and example commands for OpenShift CLI (oc) administrator commands. You must have cluster-admin or equivalent permissions to use these commands.
For developer commands, see the OpenShift CLI developer command reference.
Run oc adm -h to list all administrator commands or run oc <command> --help to get additional details for a specific command.
2.7.1. OpenShift CLI (oc) administrator commands Copy linkLink copied to clipboard!
2.7.1.1. oc adm build-chain Copy linkLink copied to clipboard!
Output the inputs and dependencies of your builds
Example usage
# Build the dependency tree for the 'latest' tag in <image-stream>
oc adm build-chain <image-stream>
# Build the dependency tree for the 'v2' tag in dot format and visualize it via the dot utility
oc adm build-chain <image-stream>:v2 -o dot | dot -T svg -o deps.svg
# Build the dependency tree across all namespaces for the specified image stream tag found in the 'test' namespace
oc adm build-chain <image-stream> -n test --all
2.7.1.2. oc adm catalog mirror Copy linkLink copied to clipboard!
Mirror an operator-registry catalog
Example usage
# Mirror an operator-registry image and its contents to a registry
oc adm catalog mirror quay.io/my/image:latest myregistry.com
# Mirror an operator-registry image and its contents to a particular namespace in a registry
oc adm catalog mirror quay.io/my/image:latest myregistry.com/my-namespace
# Mirror to an airgapped registry by first mirroring to files
oc adm catalog mirror quay.io/my/image:latest file:///local/index
oc adm catalog mirror file:///local/index/my/image:latest my-airgapped-registry.com
# Configure a cluster to use a mirrored registry
oc apply -f manifests/imageDigestMirrorSet.yaml
# Edit the mirroring mappings and mirror with "oc image mirror" manually
oc adm catalog mirror --manifests-only quay.io/my/image:latest myregistry.com
oc image mirror -f manifests/mapping.txt
# Delete all ImageDigestMirrorSets generated by oc adm catalog mirror
oc delete imagedigestmirrorset -l operators.openshift.org/catalog=true
2.7.1.3. oc adm certificate approve Copy linkLink copied to clipboard!
Approve a certificate signing request
Example usage
# Approve CSR 'csr-sqgzp'
oc adm certificate approve csr-sqgzp
2.7.1.4. oc adm certificate deny Copy linkLink copied to clipboard!
Deny a certificate signing request
Example usage
# Deny CSR 'csr-sqgzp'
oc adm certificate deny csr-sqgzp
2.7.1.5. oc adm copy-to-node Copy linkLink copied to clipboard!
Copy specified files to the node
Example usage
# Copy a new bootstrap kubeconfig file to node-0
oc adm copy-to-node --copy=new-bootstrap-kubeconfig=/etc/kubernetes/kubeconfig node/node-0
2.7.1.6. oc adm cordon Copy linkLink copied to clipboard!
Mark node as unschedulable
Example usage
# Mark node "foo" as unschedulable
oc adm cordon foo
2.7.1.7. oc adm create-bootstrap-project-template Copy linkLink copied to clipboard!
Create a bootstrap project template
Example usage
# Output a bootstrap project template in YAML format to stdout
oc adm create-bootstrap-project-template -o yaml
2.7.1.8. oc adm create-error-template Copy linkLink copied to clipboard!
Create an error page template
Example usage
# Output a template for the error page to stdout
oc adm create-error-template
2.7.1.9. oc adm create-login-template Copy linkLink copied to clipboard!
Create a login template
Example usage
# Output a template for the login page to stdout
oc adm create-login-template
2.7.1.10. oc adm create-provider-selection-template Copy linkLink copied to clipboard!
Create a provider selection template
Example usage
# Output a template for the provider selection page to stdout
oc adm create-provider-selection-template
2.7.1.11. oc adm drain Copy linkLink copied to clipboard!
Drain node in preparation for maintenance
Example usage
# Drain node "foo", even if there are pods not managed by a replication controller, replica set, job, daemon set, or stateful set on it
oc adm drain foo --force
# As above, but abort if there are pods not managed by a replication controller, replica set, job, daemon set, or stateful set, and use a grace period of 15 minutes
oc adm drain foo --grace-period=900
2.7.1.12. oc adm groups add-users Copy linkLink copied to clipboard!
Add users to a group
Example usage
# Add user1 and user2 to my-group
oc adm groups add-users my-group user1 user2
2.7.1.13. oc adm groups new Copy linkLink copied to clipboard!
Create a new group
Example usage
# Add a group with no users
oc adm groups new my-group
# Add a group with two users
oc adm groups new my-group user1 user2
# Add a group with one user and shorter output
oc adm groups new my-group user1 -o name
2.7.1.14. oc adm groups prune Copy linkLink copied to clipboard!
Remove old OpenShift groups referencing missing records from an external provider
Example usage
# Prune all orphaned groups
oc adm groups prune --sync-config=/path/to/ldap-sync-config.yaml --confirm
# Prune all orphaned groups except the ones from the denylist file
oc adm groups prune --blacklist=/path/to/denylist.txt --sync-config=/path/to/ldap-sync-config.yaml --confirm
# Prune all orphaned groups from a list of specific groups specified in an allowlist file
oc adm groups prune --whitelist=/path/to/allowlist.txt --sync-config=/path/to/ldap-sync-config.yaml --confirm
# Prune all orphaned groups from a list of specific groups specified in a list
oc adm groups prune groups/group_name groups/other_name --sync-config=/path/to/ldap-sync-config.yaml --confirm
2.7.1.15. oc adm groups remove-users Copy linkLink copied to clipboard!
Remove users from a group
Example usage
# Remove user1 and user2 from my-group
oc adm groups remove-users my-group user1 user2
2.7.1.16. oc adm groups sync Copy linkLink copied to clipboard!
Sync OpenShift groups with records from an external provider
Example usage
# Sync all groups with an LDAP server
oc adm groups sync --sync-config=/path/to/ldap-sync-config.yaml --confirm
# Sync all groups except the ones from the blacklist file with an LDAP server
oc adm groups sync --blacklist=/path/to/blacklist.txt --sync-config=/path/to/ldap-sync-config.yaml --confirm
# Sync specific groups specified in an allowlist file with an LDAP server
oc adm groups sync --whitelist=/path/to/allowlist.txt --sync-config=/path/to/sync-config.yaml --confirm
# Sync all OpenShift groups that have been synced previously with an LDAP server
oc adm groups sync --type=openshift --sync-config=/path/to/ldap-sync-config.yaml --confirm
# Sync specific OpenShift groups if they have been synced previously with an LDAP server
oc adm groups sync groups/group1 groups/group2 groups/group3 --sync-config=/path/to/sync-config.yaml --confirm
2.7.1.17. oc adm inspect Copy linkLink copied to clipboard!
Collect debugging data for a given resource
Example usage
# Collect debugging data for the "openshift-apiserver" clusteroperator
oc adm inspect clusteroperator/openshift-apiserver
# Collect debugging data for the "openshift-apiserver" and "kube-apiserver" clusteroperators
oc adm inspect clusteroperator/openshift-apiserver clusteroperator/kube-apiserver
# Collect debugging data for all clusteroperators
oc adm inspect clusteroperator
# Collect debugging data for all clusteroperators and clusterversions
oc adm inspect clusteroperators,clusterversions
2.7.1.18. oc adm migrate icsp Copy linkLink copied to clipboard!
Update imagecontentsourcepolicy file(s) to imagedigestmirrorset file(s)
Example usage
# Update the imagecontentsourcepolicy.yaml file to a new imagedigestmirrorset file under the mydir directory
oc adm migrate icsp imagecontentsourcepolicy.yaml --dest-dir mydir
2.7.1.19. oc adm migrate template-instances Copy linkLink copied to clipboard!
Update template instances to point to the latest group-version-kinds
Example usage
# Perform a dry-run of updating all objects
oc adm migrate template-instances
# To actually perform the update, the confirm flag must be appended
oc adm migrate template-instances --confirm
2.7.1.20. oc adm must-gather Copy linkLink copied to clipboard!
Launch a new instance of a pod for gathering debug information
Example usage
# Gather information using the default plug-in image and command, writing into ./must-gather.local.<rand>
oc adm must-gather
# Gather information with a specific local folder to copy to
oc adm must-gather --dest-dir=/local/directory
# Gather audit information
oc adm must-gather -- /usr/bin/gather_audit_logs
# Gather information using multiple plug-in images
oc adm must-gather --image=quay.io/kubevirt/must-gather --image=quay.io/openshift/origin-must-gather
# Gather information using a specific image stream plug-in
oc adm must-gather --image-stream=openshift/must-gather:latest
# Gather information using a specific image, command, and pod directory
oc adm must-gather --image=my/image:tag --source-dir=/pod/directory -- myspecial-command.sh
2.7.1.21. oc adm new-project Copy linkLink copied to clipboard!
Create a new project
Example usage
# Create a new project using a node selector
oc adm new-project myproject --node-selector='type=user-node,region=east'
2.7.1.22. oc adm node-image create Copy linkLink copied to clipboard!
Create an ISO image for booting the nodes to be added to the target cluster
Example usage
# Create the ISO image and download it in the current folder
oc adm node-image create
# Use a different assets folder
oc adm node-image create --dir=/tmp/assets
# Specify a custom image name
oc adm node-image create -o=my-node.iso
# In place of an ISO, creates files that can be used for PXE boot
oc adm node-image create --pxe
# Create an ISO to add a single node without using the configuration file
oc adm node-image create --mac-address=00:d8:e7:c7:4b:bb
# Create an ISO to add a single node with a root device hint and without
# using the configuration file
oc adm node-image create --mac-address=00:d8:e7:c7:4b:bb --root-device-hint=deviceName:/dev/sda
2.7.1.23. oc adm node-image monitor Copy linkLink copied to clipboard!
Monitor new nodes being added to an OpenShift cluster
Example usage
# Monitor a single node being added to a cluster
oc adm node-image monitor --ip-addresses 192.168.111.83
# Monitor multiple nodes being added to a cluster by separating each
# IP address with a comma
oc adm node-image monitor --ip-addresses 192.168.111.83,192.168.111.84
2.7.1.24. oc adm node-logs Copy linkLink copied to clipboard!
Display and filter node logs
Example usage
# Show kubelet logs from all control plane nodes
oc adm node-logs --role master -u kubelet
# See what logs are available in control plane nodes in /var/log
oc adm node-logs --role master --path=/
# Display cron log file from all control plane nodes
oc adm node-logs --role master --path=cron
2.7.1.25. oc adm ocp-certificates monitor-certificates Copy linkLink copied to clipboard!
Watch platform certificates
Example usage
# Watch platform certificates
oc adm ocp-certificates monitor-certificates
2.7.1.26. oc adm ocp-certificates regenerate-leaf Copy linkLink copied to clipboard!
Regenerate client and serving certificates of an OpenShift cluster
Example usage
# Regenerate a leaf certificate contained in a particular secret
oc adm ocp-certificates regenerate-leaf -n openshift-config-managed secret/kube-controller-manager-client-cert-key
2.7.1.27. oc adm ocp-certificates regenerate-machine-config-server-serving-cert Copy linkLink copied to clipboard!
Regenerate the machine config operator certificates in an OpenShift cluster
Example usage
# Regenerate the MCO certs without modifying user-data secrets
oc adm ocp-certificates regenerate-machine-config-server-serving-cert --update-ignition=false
# Update the user-data secrets to use new MCS certs
oc adm ocp-certificates update-ignition-ca-bundle-for-machine-config-server
2.7.1.28. oc adm ocp-certificates regenerate-top-level Copy linkLink copied to clipboard!
Regenerate the top level certificates in an OpenShift cluster
Example usage
# Regenerate the signing certificate contained in a particular secret
oc adm ocp-certificates regenerate-top-level -n openshift-kube-apiserver-operator secret/loadbalancer-serving-signer-key
2.7.1.29. oc adm ocp-certificates remove-old-trust Copy linkLink copied to clipboard!
Remove old CAs from ConfigMaps representing platform trust bundles in an OpenShift cluster
Example usage
# Remove a trust bundled contained in a particular config map
oc adm ocp-certificates remove-old-trust -n openshift-config-managed configmaps/kube-apiserver-aggregator-client-ca --created-before 2023-06-05T14:44:06Z
# Remove only CA certificates created before a certain date from all trust bundles
oc adm ocp-certificates remove-old-trust configmaps -A --all --created-before 2023-06-05T14:44:06Z
2.7.1.30. oc adm ocp-certificates update-ignition-ca-bundle-for-machine-config-server Copy linkLink copied to clipboard!
Update user-data secrets in an OpenShift cluster to use updated MCO certfs
Example usage
# Regenerate the MCO certs without modifying user-data secrets
oc adm ocp-certificates regenerate-machine-config-server-serving-cert --update-ignition=false
# Update the user-data secrets to use new MCS certs
oc adm ocp-certificates update-ignition-ca-bundle-for-machine-config-server
2.7.1.31. oc adm policy add-cluster-role-to-group Copy linkLink copied to clipboard!
Add a role to groups for all projects in the cluster
Example usage
# Add the 'cluster-admin' cluster role to the 'cluster-admins' group
oc adm policy add-cluster-role-to-group cluster-admin cluster-admins
2.7.1.32. oc adm policy add-cluster-role-to-user Copy linkLink copied to clipboard!
Add a role to users for all projects in the cluster
Example usage
# Add the 'system:build-strategy-docker' cluster role to the 'devuser' user
oc adm policy add-cluster-role-to-user system:build-strategy-docker devuser
2.7.1.33. oc adm policy add-role-to-user Copy linkLink copied to clipboard!
Add a role to users or service accounts for the current project
Example usage
# Add the 'view' role to user1 for the current project
oc adm policy add-role-to-user view user1
# Add the 'edit' role to serviceaccount1 for the current project
oc adm policy add-role-to-user edit -z serviceaccount1
2.7.1.34. oc adm policy add-scc-to-group Copy linkLink copied to clipboard!
Add a security context constraint to groups
Example usage
# Add the 'restricted' security context constraint to group1 and group2
oc adm policy add-scc-to-group restricted group1 group2
2.7.1.35. oc adm policy add-scc-to-user Copy linkLink copied to clipboard!
Add a security context constraint to users or a service account
Example usage
# Add the 'restricted' security context constraint to user1 and user2
oc adm policy add-scc-to-user restricted user1 user2
# Add the 'privileged' security context constraint to serviceaccount1 in the current namespace
oc adm policy add-scc-to-user privileged -z serviceaccount1
2.7.1.36. oc adm policy remove-cluster-role-from-group Copy linkLink copied to clipboard!
Remove a role from groups for all projects in the cluster
Example usage
# Remove the 'cluster-admin' cluster role from the 'cluster-admins' group
oc adm policy remove-cluster-role-from-group cluster-admin cluster-admins
2.7.1.37. oc adm policy remove-cluster-role-from-user Copy linkLink copied to clipboard!
Remove a role from users for all projects in the cluster
Example usage
# Remove the 'system:build-strategy-docker' cluster role from the 'devuser' user
oc adm policy remove-cluster-role-from-user system:build-strategy-docker devuser
2.7.1.38. oc adm policy scc-review Copy linkLink copied to clipboard!
Check which service account can create a pod
Example usage
# Check whether service accounts sa1 and sa2 can admit a pod with a template pod spec specified in my_resource.yaml
# Service Account specified in myresource.yaml file is ignored
oc adm policy scc-review -z sa1,sa2 -f my_resource.yaml
# Check whether service accounts system:serviceaccount:bob:default can admit a pod with a template pod spec specified in my_resource.yaml
oc adm policy scc-review -z system:serviceaccount:bob:default -f my_resource.yaml
# Check whether the service account specified in my_resource_with_sa.yaml can admit the pod
oc adm policy scc-review -f my_resource_with_sa.yaml
# Check whether the default service account can admit the pod; default is taken since no service account is defined in myresource_with_no_sa.yaml
oc adm policy scc-review -f myresource_with_no_sa.yaml
2.7.1.39. oc adm policy scc-subject-review Copy linkLink copied to clipboard!
Check whether a user or a service account can create a pod
Example usage
# Check whether user bob can create a pod specified in myresource.yaml
oc adm policy scc-subject-review -u bob -f myresource.yaml
# Check whether user bob who belongs to projectAdmin group can create a pod specified in myresource.yaml
oc adm policy scc-subject-review -u bob -g projectAdmin -f myresource.yaml
# Check whether a service account specified in the pod template spec in myresourcewithsa.yaml can create the pod
oc adm policy scc-subject-review -f myresourcewithsa.yaml
2.7.1.40. oc adm prune builds Copy linkLink copied to clipboard!
Remove old completed and failed builds
Example usage
# Dry run deleting older completed and failed builds and also including
# all builds whose associated build config no longer exists
oc adm prune builds --orphans
# To actually perform the prune operation, the confirm flag must be appended
oc adm prune builds --orphans --confirm
2.7.1.41. oc adm prune deployments Copy linkLink copied to clipboard!
Remove old completed and failed deployment configs
Example usage
# Dry run deleting all but the last complete deployment for every deployment config
oc adm prune deployments --keep-complete=1
# To actually perform the prune operation, the confirm flag must be appended
oc adm prune deployments --keep-complete=1 --confirm
2.7.1.42. oc adm prune groups Copy linkLink copied to clipboard!
Remove old OpenShift groups referencing missing records from an external provider
Example usage
# Prune all orphaned groups
oc adm prune groups --sync-config=/path/to/ldap-sync-config.yaml --confirm
# Prune all orphaned groups except the ones from the denylist file
oc adm prune groups --blacklist=/path/to/denylist.txt --sync-config=/path/to/ldap-sync-config.yaml --confirm
# Prune all orphaned groups from a list of specific groups specified in an allowlist file
oc adm prune groups --whitelist=/path/to/allowlist.txt --sync-config=/path/to/ldap-sync-config.yaml --confirm
# Prune all orphaned groups from a list of specific groups specified in a list
oc adm prune groups groups/group_name groups/other_name --sync-config=/path/to/ldap-sync-config.yaml --confirm
2.7.1.43. oc adm prune images Copy linkLink copied to clipboard!
Remove unreferenced images
Example usage
# See what the prune command would delete if only images and their referrers were more than an hour old
# and obsoleted by 3 newer revisions under the same tag were considered
oc adm prune images --keep-tag-revisions=3 --keep-younger-than=60m
# To actually perform the prune operation, the confirm flag must be appended
oc adm prune images --keep-tag-revisions=3 --keep-younger-than=60m --confirm
# See what the prune command would delete if we are interested in removing images
# exceeding currently set limit ranges ('openshift.io/Image')
oc adm prune images --prune-over-size-limit
# To actually perform the prune operation, the confirm flag must be appended
oc adm prune images --prune-over-size-limit --confirm
# Force the insecure HTTP protocol with the particular registry host name
oc adm prune images --registry-url=http://registry.example.org --confirm
# Force a secure connection with a custom certificate authority to the particular registry host name
oc adm prune images --registry-url=registry.example.org --certificate-authority=/path/to/custom/ca.crt --confirm
2.7.1.44. oc adm prune renderedmachineconfigs Copy linkLink copied to clipboard!
Prunes rendered MachineConfigs in an OpenShift cluster
Example usage
# See what the prune command would delete if run with no options
oc adm prune renderedmachineconfigs
# To actually perform the prune operation, the confirm flag must be appended
oc adm prune renderedmachineconfigs --confirm
# See what the prune command would delete if run on the worker MachineConfigPool
oc adm prune renderedmachineconfigs --pool-name=worker
# Prunes 10 oldest rendered MachineConfigs in the cluster
oc adm prune renderedmachineconfigs --count=10 --confirm
# Prunes 10 oldest rendered MachineConfigs in the cluster for the worker MachineConfigPool
oc adm prune renderedmachineconfigs --count=10 --pool-name=worker --confirm
2.7.1.45. oc adm prune renderedmachineconfigs list Copy linkLink copied to clipboard!
Lists rendered MachineConfigs in an OpenShift cluster
Example usage
# List all rendered MachineConfigs for the worker MachineConfigPool in the cluster
oc adm prune renderedmachineconfigs list --pool-name=worker
# List all rendered MachineConfigs in use by the cluster's MachineConfigPools
oc adm prune renderedmachineconfigs list --in-use
2.7.1.46. oc adm reboot-machine-config-pool Copy linkLink copied to clipboard!
Initiate reboot of the specified MachineConfigPool
Example usage
# Reboot all MachineConfigPools
oc adm reboot-machine-config-pool mcp/worker mcp/master
# Reboot all MachineConfigPools that inherit from worker. This include all custom MachineConfigPools and infra.
oc adm reboot-machine-config-pool mcp/worker
# Reboot masters
oc adm reboot-machine-config-pool mcp/master
2.7.1.47. oc adm release extract Copy linkLink copied to clipboard!
Extract the contents of an update payload to disk
Example usage
# Use git to check out the source code for the current cluster release to DIR
oc adm release extract --git=DIR
# Extract cloud credential requests for AWS
oc adm release extract --credentials-requests --cloud=aws
# Use git to check out the source code for the current cluster release to DIR from linux/s390x image
# Note: Wildcard filter is not supported; pass a single os/arch to extract
oc adm release extract --git=DIR quay.io/openshift-release-dev/ocp-release:4.11.2 --filter-by-os=linux/s390x
2.7.1.48. oc adm release info Copy linkLink copied to clipboard!
Display information about a release
Example usage
# Show information about the cluster's current release
oc adm release info
# Show the source code that comprises a release
oc adm release info 4.11.2 --commit-urls
# Show the source code difference between two releases
oc adm release info 4.11.0 4.11.2 --commits
# Show where the images referenced by the release are located
oc adm release info quay.io/openshift-release-dev/ocp-release:4.11.2 --pullspecs
# Show information about linux/s390x image
# Note: Wildcard filter is not supported; pass a single os/arch to extract
oc adm release info quay.io/openshift-release-dev/ocp-release:4.11.2 --filter-by-os=linux/s390x
2.7.1.49. oc adm release mirror Copy linkLink copied to clipboard!
Mirror a release to a different image registry location
Example usage
# Perform a dry run showing what would be mirrored, including the mirror objects
oc adm release mirror 4.11.0 --to myregistry.local/openshift/release \
--release-image-signature-to-dir /tmp/releases --dry-run
# Mirror a release into the current directory
oc adm release mirror 4.11.0 --to file://openshift/release \
--release-image-signature-to-dir /tmp/releases
# Mirror a release to another directory in the default location
oc adm release mirror 4.11.0 --to-dir /tmp/releases
# Upload a release from the current directory to another server
oc adm release mirror --from file://openshift/release --to myregistry.com/openshift/release \
--release-image-signature-to-dir /tmp/releases
# Mirror the 4.11.0 release to repository registry.example.com and apply signatures to connected cluster
oc adm release mirror --from=quay.io/openshift-release-dev/ocp-release:4.11.0-x86_64 \
--to=registry.example.com/your/repository --apply-release-image-signature
2.7.1.50. oc adm release new Copy linkLink copied to clipboard!
Create a new OpenShift release
Example usage
# Create a release from the latest origin images and push to a DockerHub repository
oc adm release new --from-image-stream=4.11 -n origin --to-image docker.io/mycompany/myrepo:latest
# Create a new release with updated metadata from a previous release
oc adm release new --from-release registry.ci.openshift.org/origin/release:v4.11 --name 4.11.1 \
--previous 4.11.0 --metadata ... --to-image docker.io/mycompany/myrepo:latest
# Create a new release and override a single image
oc adm release new --from-release registry.ci.openshift.org/origin/release:v4.11 \
cli=docker.io/mycompany/cli:latest --to-image docker.io/mycompany/myrepo:latest
# Run a verification pass to ensure the release can be reproduced
oc adm release new --from-release registry.ci.openshift.org/origin/release:v4.11
2.7.1.51. oc adm restart-kubelet Copy linkLink copied to clipboard!
Restart kubelet on the specified nodes
Example usage
# Restart all the nodes, 10% at a time
oc adm restart-kubelet nodes --all --directive=RemoveKubeletKubeconfig
# Restart all the nodes, 20 nodes at a time
oc adm restart-kubelet nodes --all --parallelism=20 --directive=RemoveKubeletKubeconfig
# Restart all the nodes, 15% at a time
oc adm restart-kubelet nodes --all --parallelism=15% --directive=RemoveKubeletKubeconfig
# Restart all the masters at the same time
oc adm restart-kubelet nodes -l node-role.kubernetes.io/master --parallelism=100% --directive=RemoveKubeletKubeconfig
2.7.1.52. oc adm taint Copy linkLink copied to clipboard!
Update the taints on one or more nodes
Example usage
# Update node 'foo' with a taint with key 'dedicated' and value 'special-user' and effect 'NoSchedule'
# If a taint with that key and effect already exists, its value is replaced as specified
oc adm taint nodes foo dedicated=special-user:NoSchedule
# Remove from node 'foo' the taint with key 'dedicated' and effect 'NoSchedule' if one exists
oc adm taint nodes foo dedicated:NoSchedule-
# Remove from node 'foo' all the taints with key 'dedicated'
oc adm taint nodes foo dedicated-
# Add a taint with key 'dedicated' on nodes having label myLabel=X
oc adm taint node -l myLabel=X dedicated=foo:PreferNoSchedule
# Add to node 'foo' a taint with key 'bar' and no value
oc adm taint nodes foo bar:NoSchedule
2.7.1.53. oc adm top images Copy linkLink copied to clipboard!
Show usage statistics for images
Example usage
# Show usage statistics for images
oc adm top images
2.7.1.54. oc adm top imagestreams Copy linkLink copied to clipboard!
Show usage statistics for image streams
Example usage
# Show usage statistics for image streams
oc adm top imagestreams
2.7.1.55. oc adm top node Copy linkLink copied to clipboard!
Display resource (CPU/memory) usage of nodes
Example usage
# Show metrics for all nodes
oc adm top node
# Show metrics for a given node
oc adm top node NODE_NAME
2.7.1.56. oc adm top persistentvolumeclaims Copy linkLink copied to clipboard!
Experimental: Show usage statistics for bound persistentvolumeclaims
Example usage
# Show usage statistics for all the bound persistentvolumeclaims across the cluster
oc adm top persistentvolumeclaims -A
# Show usage statistics for all the bound persistentvolumeclaims in a specific namespace
oc adm top persistentvolumeclaims -n default
# Show usage statistics for specific bound persistentvolumeclaims
oc adm top persistentvolumeclaims database-pvc app-pvc -n default
2.7.1.57. oc adm top pod Copy linkLink copied to clipboard!
Display resource (CPU/memory) usage of pods
Example usage
# Show metrics for all pods in the default namespace
oc adm top pod
# Show metrics for all pods in the given namespace
oc adm top pod --namespace=NAMESPACE
# Show metrics for a given pod and its containers
oc adm top pod POD_NAME --containers
# Show metrics for the pods defined by label name=myLabel
oc adm top pod -l name=myLabel
2.7.1.58. oc adm uncordon Copy linkLink copied to clipboard!
Mark node as schedulable
Example usage
# Mark node "foo" as schedulable
oc adm uncordon foo
2.7.1.59. oc adm upgrade Copy linkLink copied to clipboard!
Upgrade a cluster or adjust the upgrade channel
Example usage
# View the update status and available cluster updates
oc adm upgrade
# Update to the latest version
oc adm upgrade --to-latest=true
2.7.1.60. oc adm verify-image-signature Copy linkLink copied to clipboard!
Verify the image identity contained in the image signature
Example usage
# Verify the image signature and identity using the local GPG keychain
oc adm verify-image-signature sha256:c841e9b64e4579bd56c794bdd7c36e1c257110fd2404bebbb8b613e4935228c4 \
--expected-identity=registry.local:5000/foo/bar:v1
# Verify the image signature and identity using the local GPG keychain and save the status
oc adm verify-image-signature sha256:c841e9b64e4579bd56c794bdd7c36e1c257110fd2404bebbb8b613e4935228c4 \
--expected-identity=registry.local:5000/foo/bar:v1 --save
# Verify the image signature and identity via exposed registry route
oc adm verify-image-signature sha256:c841e9b64e4579bd56c794bdd7c36e1c257110fd2404bebbb8b613e4935228c4 \
--expected-identity=registry.local:5000/foo/bar:v1 \
--registry-url=docker-registry.foo.com
# Remove all signature verifications from the image
oc adm verify-image-signature sha256:c841e9b64e4579bd56c794bdd7c36e1c257110fd2404bebbb8b613e4935228c4 --remove-all
2.7.1.61. oc adm wait-for-node-reboot Copy linkLink copied to clipboard!
Wait for nodes to reboot after running oc adm reboot-machine-config-pool
Example usage
# Wait for all nodes to complete a requested reboot from 'oc adm reboot-machine-config-pool mcp/worker mcp/master'
oc adm wait-for-node-reboot nodes --all
# Wait for masters to complete a requested reboot from 'oc adm reboot-machine-config-pool mcp/master'
oc adm wait-for-node-reboot nodes -l node-role.kubernetes.io/master
# Wait for masters to complete a specific reboot
oc adm wait-for-node-reboot nodes -l node-role.kubernetes.io/master --reboot-number=4
2.7.1.62. oc adm wait-for-stable-cluster Copy linkLink copied to clipboard!
Wait for the platform operators to become stable
Example usage
# Wait for all cluster operators to become stable
oc adm wait-for-stable-cluster
# Consider operators to be stable if they report as such for 5 minutes straight
oc adm wait-for-stable-cluster --minimum-stable-period 5m