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Chapter 3. Administrator tasks
3.1. Adding Operators to a cluster
Cluster administrators can install Operators to an OpenShift Container Platform cluster by subscribing Operators to namespaces with OperatorHub.
3.1.1. Operator installation with OperatorHub
OperatorHub is a user interface for discovering Operators; it works in conjunction with Operator Lifecycle Manager (OLM), which installs and manages Operators on a cluster.
As a user with the proper permissions, you can install an Operator from OperatorHub using the OpenShift Container Platform web console or CLI.
During installation, you must determine the following initial settings for the Operator:
- Installation Mode
- Choose a specific namespace in which to install the Operator.
- Update Channel
- If an Operator is available through multiple channels, you can choose which channel you want to subscribe to. For example, to deploy from the stable channel, if available, select it from the list.
- Approval Strategy
You can choose automatic or manual updates.
If you choose automatic updates for an installed Operator, when a new version of that Operator is available in the selected channel, Operator Lifecycle Manager (OLM) automatically upgrades the running instance of your Operator without human intervention.
If you select manual updates, when a newer version of an Operator is available, OLM creates an update request. As a cluster administrator, you must then manually approve that update request to have the Operator updated to the new version.
3.1.2. Installing from OperatorHub using the web console
You can install and subscribe to an Operator from OperatorHub using the OpenShift Container Platform web console.
Prerequisites
-
Access to an OpenShift Container Platform cluster using an account with
cluster-admin
permissions. - Access to an OpenShift Container Platform cluster using an account with Operator installation permissions.
Procedure
-
Navigate in the web console to the Operators
OperatorHub page. Scroll or type a keyword into the Filter by keyword box to find the Operator you want. For example, type
advanced
to find the Advanced Cluster Management for Kubernetes Operator.You can also filter options by Infrastructure Features. For example, select Disconnected if you want to see Operators that work in disconnected environments, also known as restricted network environments.
Select the Operator to display additional information.
NoteChoosing a Community Operator warns that Red Hat does not certify Community Operators; you must acknowledge the warning before continuing.
- Read the information about the Operator and click Install.
On the Install Operator page:
Select one of the following:
-
All namespaces on the cluster (default) installs the Operator in the default
openshift-operators
namespace to watch and be made available to all namespaces in the cluster. This option is not always available. - A specific namespace on the cluster allows you to choose a specific, single namespace in which to install the Operator. The Operator will only watch and be made available for use in this single namespace.
-
All namespaces on the cluster (default) installs the Operator in the default
- Choose a specific, single namespace in which to install the Operator. The Operator will only watch and be made available for use in this single namespace.
- Select an Update Channel (if more than one is available).
- Select Automatic or Manual approval strategy, as described earlier.
Click Install to make the Operator available to the selected namespaces on this OpenShift Container Platform cluster.
If you selected a Manual approval strategy, the upgrade status of the subscription remains Upgrading until you review and approve the install plan.
After approving on the Install Plan page, the subscription upgrade status moves to Up to date.
- If you selected an Automatic approval strategy, the upgrade status should resolve to Up to date without intervention.
After the upgrade status of the subscription is Up to date, select Operators
Installed Operators to verify that the cluster service version (CSV) of the installed Operator eventually shows up. The Status should ultimately resolve to InstallSucceeded in the relevant namespace. NoteFor the All namespaces… installation mode, the status resolves to InstallSucceeded in the
openshift-operators
namespace, but the status is Copied if you check in other namespaces.If it does not:
-
Check the logs in any pods in the
openshift-operators
project (or other relevant namespace if A specific namespace… installation mode was selected) on the WorkloadsPods page that are reporting issues to troubleshoot further.
-
Check the logs in any pods in the
3.1.3. Installing from OperatorHub using the CLI
Instead of using the OpenShift Container Platform web console, you can install an Operator from OperatorHub using the CLI. Use the oc
command to create or update a Subscription
object.
Prerequisites
- Access to an OpenShift Container Platform cluster using an account with Operator installation permissions.
-
Install the
oc
command to your local system.
Procedure
View the list of Operators available to the cluster from OperatorHub:
$ oc get packagemanifests -n openshift-marketplace
Example output
NAME CATALOG AGE 3scale-operator Red Hat Operators 91m advanced-cluster-management Red Hat Operators 91m amq7-cert-manager Red Hat Operators 91m ... couchbase-enterprise-certified Certified Operators 91m crunchy-postgres-operator Certified Operators 91m mongodb-enterprise Certified Operators 91m ... etcd Community Operators 91m jaeger Community Operators 91m kubefed Community Operators 91m ...
Note the catalog for your desired Operator.
Inspect your desired Operator to verify its supported install modes and available channels:
$ oc describe packagemanifests <operator_name> -n openshift-marketplace
An Operator group, defined by an
OperatorGroup
object, selects target namespaces in which to generate required RBAC access for all Operators in the same namespace as the Operator group.The namespace to which you subscribe the Operator must have an Operator group that matches the install mode of the Operator, either the
AllNamespaces
orSingleNamespace
mode. If the Operator you intend to install uses theAllNamespaces
, then theopenshift-operators
namespace already has an appropriate Operator group in place.However, if the Operator uses the
SingleNamespace
mode and you do not already have an appropriate Operator group in place, you must create one.NoteThe web console version of this procedure handles the creation of the
OperatorGroup
andSubscription
objects automatically behind the scenes for you when choosingSingleNamespace
mode.Create an
OperatorGroup
object YAML file, for exampleoperatorgroup.yaml
:Example
OperatorGroup
objectapiVersion: operators.coreos.com/v1 kind: OperatorGroup metadata: name: <operatorgroup_name> namespace: <namespace> spec: targetNamespaces: - <namespace>
Create the
OperatorGroup
object:$ oc apply -f operatorgroup.yaml
Create a
Subscription
object YAML file to subscribe a namespace to an Operator, for examplesub.yaml
:Example
Subscription
objectapiVersion: operators.coreos.com/v1alpha1 kind: Subscription metadata: name: <subscription_name> namespace: openshift-operators 1 spec: channel: <channel_name> 2 name: <operator_name> 3 source: redhat-operators 4 sourceNamespace: openshift-marketplace 5
- 1
- For
AllNamespaces
install mode usage, specify theopenshift-operators
namespace. Otherwise, specify the relevant single namespace forSingleNamespace
install mode usage. - 2
- Name of the channel to subscribe to.
- 3
- Name of the Operator to subscribe to.
- 4
- Name of the catalog source that provides the Operator.
- 5
- Namespace of the catalog source. Use
openshift-marketplace
for the default OperatorHub catalog sources.
Create the
Subscription
object:$ oc apply -f sub.yaml
At this point, OLM is now aware of the selected Operator. A cluster service version (CSV) for the Operator should appear in the target namespace, and APIs provided by the Operator should be available for creation.
Additional resources
3.1.4. Installing a specific version of an Operator
You can install a specific version of an Operator by setting the cluster service version (CSV) in a Subscription
object.
Prerequisites
- Access to an OpenShift Container Platform cluster using an account with Operator installation permissions
-
OpenShift CLI (
oc
) installed
Procedure
Create a
Subscription
object YAML file that subscribes a namespace to an Operator with a specific version by setting thestartingCSV
field. Set theinstallPlanApproval
field toManual
to prevent the Operator from automatically upgrading if a later version exists in the catalog.For example, the following
sub.yaml
file can be used to install the Red Hat Quay Operator specifically to version 3.4.0:Subscription with a specific starting Operator version
apiVersion: operators.coreos.com/v1alpha1 kind: Subscription metadata: name: quay-operator namespace: quay spec: channel: quay-v3.4 installPlanApproval: Manual 1 name: quay-operator source: redhat-operators sourceNamespace: openshift-marketplace startingCSV: quay-operator.v3.4.0 2
- 1
- Set the approval strategy to
Manual
in case your specified version is superseded by a later version in the catalog. This plan prevents an automatic upgrade to a later version and requires manual approval before the starting CSV can complete the installation. - 2
- Set a specific version of an Operator CSV.
Create the
Subscription
object:$ oc apply -f sub.yaml
- Manually approve the pending install plan to complete the Operator installation.
Additional resources
3.2. Upgrading installed Operators
As a cluster administrator, you can upgrade Operators that have been previously installed using Operator Lifecycle Manager (OLM) on your OpenShift Container Platform cluster.
3.2.1. Changing the update channel for an Operator
The Subscription of an installed Operator specifies an update channel, which is used to track and receive updates for the Operator. To upgrade the Operator to start tracking and receiving updates from a newer channel, you can change the update channel in the Subscription.
The names of update channels in a Subscription can differ between Operators, but should follow a common convention within a given Operator. Some naming schemes include:
-
4.3
,4.4
,4.5
-
stable-4.3
,stable-4.4
,stable-4.5
-
alpha
,beta
,stable
,latest
Alternatively, the channel names might follow the version numbers of the application provided by the Operator.
Installed Operators cannot change to a channel that is older than the current channel.
If the approval strategy in the subscription is set to Automatic, the upgrade process initiates as soon as a new Operator version is available in the selected channel. If the approval strategy is set to Manual, you must manually approve pending upgrades.
Prerequisites
- An Operator previously installed using Operator Lifecycle Manager (OLM).
Procedure
-
In the Administrator perspective of the OpenShift Container Platform web console, navigate to Operators
Installed Operators. - Click the name of the Operator you want to change the update channel for.
- Click the Subscription tab.
- Click the name of the update channel under Channel.
- Click the newer update channel that you want to change to, then click Save.
For Subscriptions with an Automatic approval strategy, the upgrade begins automatically. Navigate back to the Operators
Installed Operators page to monitor the progress of the upgrade. When complete, the status changes to Succeeded and Up to date. For Subscriptions with a Manual approval strategy, you can manually approve the upgrade from the Subscription tab.
3.2.2. Manually approving a pending Operator upgrade
If an installed Operator has the approval strategy in its subscription set to Manual, when new updates are released in its current update channel, the update must be manually approved before installation can begin.
Prerequisites
- An Operator previously installed using Operator Lifecycle Manager (OLM).
Procedure
-
In the Administrator perspective of the OpenShift Container Platform web console, navigate to Operators
Installed Operators. - Operators that have a pending upgrade display a status with Upgrade available. Click the name of the Operator you want to upgrade.
- Click the Subscription tab. Any upgrades requiring approval are displayed next to Upgrade Status. For example, it might display 1 requires approval.
- Click 1 requires approval, then click Preview Install Plan.
- Review the resources that are listed as available for upgrade. When satisfied, click Approve.
-
Navigate back to the Operators
Installed Operators page to monitor the progress of the upgrade. When complete, the status changes to Succeeded and Up to date.
3.3. Deleting Operators from a cluster
The following describes how to delete Operators that were previously installed using Operator Lifecycle Manager (OLM) on your OpenShift Container Platform cluster.
3.3.1. Deleting Operators from a cluster using the web console
Cluster administrators can delete installed Operators from a selected namespace by using the web console.
Prerequisites
-
Access to an OpenShift Container Platform cluster web console using an account with
cluster-admin
permissions.
Procedure
-
From the Operators
Installed Operators page, scroll or type a keyword into the Filter by name to find the Operator you want. Then, click on it. On the right-hand side of the Operator Details page, select Uninstall Operator from the Actions drop-down menu.
An Uninstall Operator? dialog box is displayed, reminding you that:
Removing the Operator will not remove any of its custom resource definitions or managed resources. If your Operator has deployed applications on the cluster or configured off-cluster resources, these will continue to run and need to be cleaned up manually.
The Operator, any Operator deployments, and pods are removed by this action. Any resources managed by the Operator, including CRDs and CRs, are not removed. The web console enables dashboards and navigation items for some Operators. To remove these after uninstalling the Operator, you might need to manually delete the Operator CRDs.
- Select Uninstall. This Operator stops running and no longer receives updates.
3.3.2. Deleting Operators from a cluster using the CLI
Cluster administrators can delete installed Operators from a selected namespace by using the CLI.
Prerequisites
-
Access to an OpenShift Container Platform cluster using an account with
cluster-admin
permissions. -
oc
command installed on workstation.
Procedure
Check the current version of the subscribed Operator (for example,
jaeger
) in thecurrentCSV
field:$ oc get subscription jaeger -n openshift-operators -o yaml | grep currentCSV
Example output
currentCSV: jaeger-operator.v1.8.2
Delete the subscription (for example,
jaeger
):$ oc delete subscription jaeger -n openshift-operators
Example output
subscription.operators.coreos.com "jaeger" deleted
Delete the CSV for the Operator in the target namespace using the
currentCSV
value from the previous step:$ oc delete clusterserviceversion jaeger-operator.v1.8.2 -n openshift-operators
Example output
clusterserviceversion.operators.coreos.com "jaeger-operator.v1.8.2" deleted
3.4. Configuring proxy support in Operator Lifecycle Manager
If a global proxy is configured on the OpenShift Container Platform cluster, Operator Lifecycle Manager (OLM) automatically configures Operators that it manages with the cluster-wide proxy. However, you can also configure installed Operators to override the global proxy or inject a custom CA certificate.
Additional resources
- Configuring the cluster-wide proxy
- Configuring a custom PKI (custom CA certificate)
3.4.1. Overriding proxy settings of an Operator
If a cluster-wide egress proxy is configured, Operators running with Operator Lifecycle Manager (OLM) inherit the cluster-wide proxy settings on their deployments. Cluster administrators can also override these proxy settings by configuring the subscription of an Operator.
Operators must handle setting environment variables for proxy settings in the pods for any managed Operands.
Prerequisites
-
Access to an OpenShift Container Platform cluster using an account with
cluster-admin
permissions.
Procedure
-
Navigate in the web console to the Operators
OperatorHub page. - Select the Operator and click Install.
On the Install Operator page, modify the
Subscription
object to include one or more of the following environment variables in thespec
section:-
HTTP_PROXY
-
HTTPS_PROXY
-
NO_PROXY
For example:
Subscription
object with proxy setting overridesapiVersion: operators.coreos.com/v1alpha1 kind: Subscription metadata: name: etcd-config-test namespace: openshift-operators spec: config: env: - name: HTTP_PROXY value: test_http - name: HTTPS_PROXY value: test_https - name: NO_PROXY value: test channel: clusterwide-alpha installPlanApproval: Automatic name: etcd source: community-operators sourceNamespace: openshift-marketplace startingCSV: etcdoperator.v0.9.4-clusterwide
NoteThese environment variables can also be unset using an empty value to remove any previously set cluster-wide or custom proxy settings.
OLM handles these environment variables as a unit; if at least one of them is set, all three are considered overridden and the cluster-wide defaults are not used for the deployments of the subscribed Operator.
-
- Click Install to make the Operator available to the selected namespaces.
After the CSV for the Operator appears in the relevant namespace, you can verify that custom proxy environment variables are set in the deployment. For example, using the CLI:
$ oc get deployment -n openshift-operators \ etcd-operator -o yaml \ | grep -i "PROXY" -A 2
Example output
- name: HTTP_PROXY value: test_http - name: HTTPS_PROXY value: test_https - name: NO_PROXY value: test image: quay.io/coreos/etcd-operator@sha256:66a37fd61a06a43969854ee6d3e21088a98b93838e284a6086b13917f96b0d9c ...
3.4.2. Injecting a custom CA certificate
When a cluster administrator adds a custom CA certificate to a cluster using a config map, the Cluster Network Operator merges the user-provided certificates and system CA certificates into a single bundle. You can inject this merged bundle into your Operator running on Operator Lifecycle Manager (OLM), which is useful if you have a man-in-the-middle HTTPS proxy.
Prerequisites
-
Access to an OpenShift Container Platform cluster using an account with
cluster-admin
permissions. - Custom CA certificate added to the cluster using a config map.
- Desired Operator installed and running on OLM.
Procedure
Create an empty config map in the namespace where the subscription for your Operator exists and include the following label:
apiVersion: v1 kind: ConfigMap metadata: name: trusted-ca 1 labels: config.openshift.io/inject-trusted-cabundle: "true" 2
After creating this config map, it is immediately populated with the certificate contents of the merged bundle.
Update your the
Subscription
object to include aspec.config
section that mounts thetrusted-ca
config map as a volume to each container within a pod that requires a custom CA:kind: Subscription metadata: name: my-operator spec: package: etcd channel: alpha config: 1 selector: matchLabels: <labels_for_pods> 2 volumes: 3 - name: trusted-ca configMap: name: trusted-ca items: - key: ca-bundle.crt 4 path: tls-ca-bundle.pem 5 volumeMounts: 6 - name: trusted-ca mountPath: /etc/pki/ca-trust/extracted/pem readOnly: true
3.5. Viewing Operator status
Understanding the state of the system in Operator Lifecycle Manager (OLM) is important for making decisions about and debugging problems with installed Operators. OLM provides insight into subscriptions and related catalog sources regarding their state and actions performed. This helps users better understand the healthiness of their Operators.
3.5.1. Operator subscription condition types
Subscriptions can report the following condition types:
Condition | Description |
---|---|
| Some or all of the catalog sources to be used in resolution are unhealthy. |
| An install plan for a subscription is missing. |
| An install plan for a subscription is pending installation. |
| An install plan for a subscription has failed. |
Default OpenShift Container Platform cluster Operators are managed by the Cluster Version Operator (CVO) and they do not have a Subscription
object. Application Operators are managed by Operator Lifecycle Manager (OLM) and they have a Subscription
object.
3.5.2. Viewing Operator subscription status using the CLI
You can view Operator subscription status using the CLI.
Prerequisites
-
You have access to the cluster as a user with the
cluster-admin
role. -
You have installed the OpenShift CLI (
oc
).
Procedure
List Operator subscriptions:
$ oc get subs -n <operator_namespace>
Use the
oc describe
command to inspect aSubscription
resource:$ oc describe sub <subscription_name> -n <operator_namespace>
In the command output, find the
Conditions
section for the status of Operator subscription condition types. In the following example, theCatalogSourcesUnhealthy
condition type has a status offalse
because all available catalog sources are healthy:Example output
Conditions: Last Transition Time: 2019-07-29T13:42:57Z Message: all available catalogsources are healthy Reason: AllCatalogSourcesHealthy Status: False Type: CatalogSourcesUnhealthy
Default OpenShift Container Platform cluster Operators are managed by the Cluster Version Operator (CVO) and they do not have a Subscription
object. Application Operators are managed by Operator Lifecycle Manager (OLM) and they have a Subscription
object.
3.6. Allowing non-cluster administrators to install Operators
Operators can require wide privileges to run, and the required privileges can change between versions. Operator Lifecycle Manager (OLM) runs with cluster-admin
privileges. By default, Operator authors can specify any set of permissions in the cluster service version (CSV) and OLM will consequently grant it to the Operator.
Cluster administrators should take measures to ensure that an Operator cannot achieve cluster-scoped privileges and that users cannot escalate privileges using OLM. One method for locking this down requires cluster administrators auditing Operators before they are added to the cluster. Cluster administrators are also provided tools for determining and constraining which actions are allowed during an Operator installation or upgrade using service accounts.
By associating an Operator group with a service account that has a set of privileges granted to it, cluster administrators can set policy on Operators to ensure they operate only within predetermined boundaries using RBAC rules. The Operator is unable to do anything that is not explicitly permitted by those rules.
This self-sufficient, limited scope installation of Operators by non-cluster administrators means that more of the Operator Framework tools can safely be made available to more users, providing a richer experience for building applications with Operators.
3.6.1. Understanding Operator installation policy
Using Operator Lifecycle Manager (OLM), cluster administrators can choose to specify a service account for an Operator group so that all Operators associated with the group are deployed and run against the privileges granted to the service account.
The APIService
and CustomResourceDefinition
resources are always created by OLM using the cluster-admin
role. A service account associated with an Operator group should never be granted privileges to write these resources.
If the specified service account does not have adequate permissions for an Operator that is being installed or upgraded, useful and contextual information is added to the status of the respective resource(s) so that it is easy for the cluster administrator to troubleshoot and resolve the issue.
Any Operator tied to this Operator group is now confined to the permissions granted to the specified service account. If the Operator asks for permissions that are outside the scope of the service account, the install fails with appropriate errors.
3.6.1.1. Installation scenarios
When determining whether an Operator can be installed or upgraded on a cluster, Operator Lifecycle Manager (OLM) considers the following scenarios:
- A cluster administrator creates a new Operator group and specifies a service account. All Operator(s) associated with this Operator group are installed and run against the privileges granted to the service account.
- A cluster administrator creates a new Operator group and does not specify any service account. OpenShift Container Platform maintains backward compatibility, so the default behavior remains and Operator installs and upgrades are permitted.
- For existing Operator groups that do not specify a service account, the default behavior remains and Operator installs and upgrades are permitted.
- A cluster administrator updates an existing Operator group and specifies a service account. OLM allows the existing Operator to continue to run with their current privileges. When such an existing Operator is going through an upgrade, it is reinstalled and run against the privileges granted to the service account like any new Operator.
- A service account specified by an Operator group changes by adding or removing permissions, or the existing service account is swapped with a new one. When existing Operators go through an upgrade, it is reinstalled and run against the privileges granted to the updated service account like any new Operator.
- A cluster administrator removes the service account from an Operator group. The default behavior remains and Operator installs and upgrades are permitted.
3.6.1.2. Installation workflow
When an Operator group is tied to a service account and an Operator is installed or upgraded, Operator Lifecycle Manager (OLM) uses the following workflow:
-
The given
Subscription
object is picked up by OLM. - OLM fetches the Operator group tied to this subscription.
- OLM determines that the Operator group has a service account specified.
- OLM creates a client scoped to the service account and uses the scoped client to install the Operator. This ensures that any permission requested by the Operator is always confined to that of the service account in the Operator group.
- OLM creates a new service account with the set of permissions specified in the CSV and assigns it to the Operator. The Operator runs as the assigned service account.
3.6.2. Scoping Operator installations
To provide scoping rules to Operator installations and upgrades on Operator Lifecycle Manager (OLM), associate a service account with an Operator group.
Using this example, a cluster administrator can confine a set of Operators to a designated namespace.
Procedure
Create a new namespace:
$ cat <<EOF | oc create -f - apiVersion: v1 kind: Namespace metadata: name: scoped EOF
Allocate permissions that you want the Operator(s) to be confined to. This involves creating a new service account, relevant role(s), and role binding(s).
$ cat <<EOF | oc create -f - apiVersion: v1 kind: ServiceAccount metadata: name: scoped namespace: scoped EOF
The following example grants the service account permissions to do anything in the designated namespace for simplicity. In a production environment, you should create a more fine-grained set of permissions:
$ cat <<EOF | oc create -f - apiVersion: rbac.authorization.k8s.io/v1 kind: Role metadata: name: scoped namespace: scoped rules: - apiGroups: ["*"] resources: ["*"] verbs: ["*"] --- apiVersion: rbac.authorization.k8s.io/v1 kind: RoleBinding metadata: name: scoped-bindings namespace: scoped roleRef: apiGroup: rbac.authorization.k8s.io kind: Role name: scoped subjects: - kind: ServiceAccount name: scoped namespace: scoped EOF
Create an
OperatorGroup
object in the designated namespace. This Operator group targets the designated namespace to ensure that its tenancy is confined to it.In addition, Operator groups allow a user to specify a service account. Specify the service account created in the previous step:
$ cat <<EOF | oc create -f - apiVersion: operators.coreos.com/v1 kind: OperatorGroup metadata: name: scoped namespace: scoped spec: serviceAccountName: scoped targetNamespaces: - scoped EOF
Any Operator installed in the designated namespace is tied to this Operator group and therefore to the service account specified.
Create a
Subscription
object in the designated namespace to install an Operator:$ cat <<EOF | oc create -f - apiVersion: operators.coreos.com/v1alpha1 kind: Subscription metadata: name: etcd namespace: scoped spec: channel: singlenamespace-alpha name: etcd source: <catalog_source_name> 1 sourceNamespace: <catalog_source_namespace> 2 EOF
Any Operator tied to this Operator group is confined to the permissions granted to the specified service account. If the Operator requests permissions that are outside the scope of the service account, the installation fails with relevant errors.
3.6.2.1. Fine-grained permissions
Operator Lifecycle Manager (OLM) uses the service account specified in an Operator group to create or update the following resources related to the Operator being installed:
-
ClusterServiceVersion
-
Subscription
-
Secret
-
ServiceAccount
-
Service
-
ClusterRole
andClusterRoleBinding
-
Role
andRoleBinding
In order to confine Operators to a designated namespace, cluster administrators can start by granting the following permissions to the service account:
The following role is a generic example and additional rules might be required based on the specific Operator.
kind: Role rules: - apiGroups: ["operators.coreos.com"] resources: ["subscriptions", "clusterserviceversions"] verbs: ["get", "create", "update", "patch"] - apiGroups: [""] resources: ["services", "serviceaccounts"] verbs: ["get", "create", "update", "patch"] - apiGroups: ["rbac.authorization.k8s.io"] resources: ["roles", "rolebindings"] verbs: ["get", "create", "update", "patch"] - apiGroups: ["apps"] 1 resources: ["deployments"] verbs: ["list", "watch", "get", "create", "update", "patch", "delete"] - apiGroups: [""] 2 resources: ["pods"] verbs: ["list", "watch", "get", "create", "update", "patch", "delete"]
In addition, if any Operator specifies a pull secret, the following permissions must also be added:
kind: ClusterRole 1
rules:
- apiGroups: [""]
resources: ["secrets"]
verbs: ["get"]
---
kind: Role
rules:
- apiGroups: [""]
resources: ["secrets"]
verbs: ["create", "update", "patch"]
- 1
- Required to get the secret from the OLM namespace.
3.6.3. Troubleshooting permission failures
If an Operator installation fails due to lack of permissions, identify the errors using the following procedure.
Procedure
Review the
Subscription
object. Its status has an object referenceinstallPlanRef
that points to theInstallPlan
object that attempted to create the necessary[Cluster]Role[Binding]
object(s) for the Operator:apiVersion: operators.coreos.com/v1 kind: Subscription metadata: name: etcd namespace: scoped status: installPlanRef: apiVersion: operators.coreos.com/v1 kind: InstallPlan name: install-4plp8 namespace: scoped resourceVersion: "117359" uid: 2c1df80e-afea-11e9-bce3-5254009c9c23
Check the status of the
InstallPlan
object for any errors:apiVersion: operators.coreos.com/v1 kind: InstallPlan status: conditions: - lastTransitionTime: "2019-07-26T21:13:10Z" lastUpdateTime: "2019-07-26T21:13:10Z" message: 'error creating clusterrole etcdoperator.v0.9.4-clusterwide-dsfx4: clusterroles.rbac.authorization.k8s.io is forbidden: User "system:serviceaccount:scoped:scoped" cannot create resource "clusterroles" in API group "rbac.authorization.k8s.io" at the cluster scope' reason: InstallComponentFailed status: "False" type: Installed phase: Failed
The error message tells you:
-
The type of resource it failed to create, including the API group of the resource. In this case, it was
clusterroles
in therbac.authorization.k8s.io
group. - The name of the resource.
-
The type of error:
is forbidden
tells you that the user does not have enough permission to do the operation. - The name of the user who attempted to create or update the resource. In this case, it refers to the service account specified in the Operator group.
The scope of the operation:
cluster scope
or not.The user can add the missing permission to the service account and then iterate.
NoteOperator Lifecycle Manager (OLM) does not currently provide the complete list of errors on the first try.
-
The type of resource it failed to create, including the API group of the resource. In this case, it was
3.7. Managing custom catalogs
This guide describes how to work with custom catalogs packaged using either the Package Manifest Format or Bundle Format on Operator Lifecycle Manager (OLM) in OpenShift Container Platform.
3.7.1. Custom catalogs using Package Manifest Format
3.7.1.1. Understanding Operator catalog images
Operator Lifecycle Manager (OLM) always installs Operators from the latest version of an Operator catalog. For OpenShift Container Platform 4.5, Red Hat-provided Operators are distributed via Quay App Registry catalogs from quay.io.
Catalog | Description |
---|---|
| Public catalog for Red Hat products packaged and shipped by Red Hat. Supported by Red Hat. |
| Public catalog for products from leading independent software vendors (ISVs). Red Hat partners with ISVs to package and ship. Supported by the ISV. |
| Public catalog for software maintained by relevant representatives in the operator-framework/community-operators GitHub repository. No official support. |
As catalogs are updated, the latest versions of Operators change, and older versions may be removed or altered. This behavior can cause problems maintaining reproducible installs over time. In addition, when OLM runs on an OpenShift Container Platform cluster in a restricted network environment, it is unable to access the catalogs from quay.io directly.
Using the oc adm catalog build
command, cluster administrators can create an Operator catalog image. An Operator catalog image is:
- a point-in-time export of an App Registry type catalog’s content.
- the result of converting an App Registry catalog to a container image type catalog.
- an immutable artifact.
Creating an Operator catalog image provides a simple way to use this content without incurring the aforementioned issues.
3.7.1.2. Building an Operator catalog image
Cluster administrators can build a custom Operator catalog image based on the Package Manifest Format to be used by Operator Lifecycle Manager (OLM). The catalog image can be pushed to a container image registry that supports Docker v2-2. For a cluster on a restricted network, this registry can be a registry that the cluster has network access to, such as a mirror registry created during a restricted network cluster installation.
The internal registry of the OpenShift Container Platform cluster cannot be used as the target registry because it does not support pushing without a tag, which is required during the mirroring process.
For this example, the procedure assumes use of a mirror registry that has access to both your network and the Internet.
Only the Linux version of the oc
client can be used for this procedure, because the Windows and macOS versions do not provide the oc adm catalog build
command.
Prerequisites
- Workstation with unrestricted network access
-
oc
version 4.3.5+ Linux client -
podman
version 1.4.4+ - Access to mirror registry that supports Docker v2-2
If you are working with private registries, set the
REG_CREDS
environment variable to the file path of your registry credentials for use in later steps. For example, for thepodman
CLI:$ REG_CREDS=${XDG_RUNTIME_DIR}/containers/auth.json
If you are working with private namespaces that your quay.io account has access to, you must set a Quay authentication token. Set the
AUTH_TOKEN
environment variable for use with the--auth-token
flag by making a request against the login API using your quay.io credentials:$ AUTH_TOKEN=$(curl -sH "Content-Type: application/json" \ -XPOST https://quay.io/cnr/api/v1/users/login -d ' { "user": { "username": "'"<quay_username>"'", "password": "'"<quay_password>"'" } }' | jq -r '.token')
Procedure
On the workstation with unrestricted network access, authenticate with the target mirror registry:
$ podman login <registry_host_name>
Also authenticate with
registry.redhat.io
so that the base image can be pulled during the build:$ podman login registry.redhat.io
Build a catalog image based on the
redhat-operators
catalog from Quay.io, tagging and pushing it to your mirror registry:$ oc adm catalog build \ --appregistry-org redhat-operators \1 --from=registry.redhat.io/openshift4/ose-operator-registry:v4.5 \2 --filter-by-os="linux/amd64" \3 --to=<registry_host_name>:<port>/olm/redhat-operators:v1 \4 [-a ${REG_CREDS}] \5 [--insecure] \6 [--auth-token "${AUTH_TOKEN}"] 7
- 1
- Organization (namespace) to pull from an App Registry instance.
- 2
- Set
--from
to theose-operator-registry
base image using the tag that matches the target OpenShift Container Platform cluster major and minor version. - 3
- Set
--filter-by-os
to the operating system and architecture to use for the base image, which must match the target OpenShift Container Platform cluster. Valid values arelinux/amd64
,linux/ppc64le
, andlinux/s390x
. - 4
- Name your catalog image and include a tag, for example,
v1
. - 5
- Optional: If required, specify the location of your registry credentials file.
- 6
- Optional: If you do not want to configure trust for the target registry, add the
--insecure
flag. - 7
- Optional: If other application registry catalogs are used that are not public, specify a Quay authentication token.
Example output
INFO[0013] loading Bundles dir=/var/folders/st/9cskxqs53ll3wdn434vw4cd80000gn/T/300666084/manifests-829192605 ... Pushed sha256:f73d42950021f9240389f99ddc5b0c7f1b533c054ba344654ff1edaf6bf827e3 to example_registry:5000/olm/redhat-operators:v1
Sometimes invalid manifests are accidentally introduced catalogs provided by Red Hat; when this happens, you might see some errors:
Example output with errors
... INFO[0014] directory dir=/var/folders/st/9cskxqs53ll3wdn434vw4cd80000gn/T/300666084/manifests-829192605 file=4.2 load=package W1114 19:42:37.876180 34665 builder.go:141] error building database: error loading package into db: fuse-camel-k-operator.v7.5.0 specifies replacement that couldn't be found Uploading ... 244.9kB/s
These errors are usually non-fatal, and if the Operator package mentioned does not contain an Operator you plan to install or a dependency of one, then they can be ignored.
Additional resources
3.7.1.3. Mirroring an Operator catalog image
Cluster administrators can mirror their catalog’s content into a registry and use a CatalogSource to load the content onto an OpenShift Container Platform cluster. For this example, the procedure uses a custom redhat-operators
catalog image previously built and pushed to a supported registry.
Prerequisites
- Workstation with unrestricted network access
- A custom Operator catalog image pushed to a supported registry
-
oc
version 4.3.5+ -
podman
version 1.4.4+ - Access to mirror registry that supports Docker v2-2
If you are working with private registries, set the
REG_CREDS
environment variable to the file path of your registry credentials for use in later steps. For example, for thepodman
CLI:$ REG_CREDS=${XDG_RUNTIME_DIR}/containers/auth.json
Procedure
The
oc adm catalog mirror
command extracts the contents of your custom Operator catalog image to generate the manifests required for mirroring. You can choose to either:- Allow the default behavior of the command to automatically mirror all of the image content to your mirror registry after generating manifests, or
-
Add the
--manifests-only
flag to only generate the manifests required for mirroring, but do not actually mirror the image content to a registry yet. This can be useful for reviewing what will be mirrored, and it allows you to make any changes to the mapping list if you only require a subset of the content. You can then use that file with theoc image mirror
command to mirror the modified list of images in a later step.
On your workstation with unrestricted network access, run the following command:
$ oc adm catalog mirror \ <registry_host_name>:<port>/olm/redhat-operators:v1 \1 <registry_host_name>:<port> \ [-a ${REG_CREDS}] \2 [--insecure] \3 --filter-by-os='.*' \4 [--manifests-only] 5
- 1
- Specify your Operator catalog image.
- 2
- Optional: If required, specify the location of your registry credentials file.
- 3
- Optional: If you do not want to configure trust for the target registry, add the
--insecure
flag. - 4
- This flag is currently required due to a known issue with multiple architecture support.
- 5
- Optional: Only generate the manifests required for mirroring and do not actually mirror the image content to a registry.
WarningIf the
--filter-by-os
flag remains unset or set to any value other than.*
, the command filters out different architectures, which changes the digest of the manifest list, also known as a multi-arch image. The incorrect digest causes deployments of those images and Operators on disconnected clusters to fail. For more information, see BZ#1890951.Example output
using database path mapping: /:/tmp/190214037 wrote database to /tmp/190214037 using database at: /tmp/190214037/bundles.db 1 ...
- 1
- Temporary database generated by the command.
After running the command, a
<image_name>-manifests/
directory is created in the current directory and generates the following files:-
The
imageContentSourcePolicy.yaml
file defines anImageContentSourcePolicy
object that can configure nodes to translate between the image references stored in Operator manifests and the mirrored registry. -
The
mapping.txt
file contains all of the source images and where to map them in the target registry. This file is compatible with theoc image mirror
command and can be used to further customize the mirroring configuration.
If you used the
--manifests-only
flag in the previous step and want to mirror only a subset of the content:Modify the list of images in your
mapping.txt
file to your specifications. If you are unsure of the exact names and versions of the subset of images you want to mirror, use the following steps to find them:Run the
sqlite3
tool against the temporary database that was generated by theoc adm catalog mirror
command to retrieve a list of images matching a general search query. The output helps inform how you will later edit yourmapping.txt
file.For example, to retrieve a list of images that are similar to the string
clusterlogging.4.3
:$ echo "select * from related_image \ where operatorbundle_name like 'clusterlogging.4.3%';" \ | sqlite3 -line /tmp/190214037/bundles.db 1
- 1
- Refer to the previous output of the
oc adm catalog mirror
command to find the path of the database file.
Example output
image = registry.redhat.io/openshift4/ose-logging-kibana5@sha256:aa4a8b2a00836d0e28aa6497ad90a3c116f135f382d8211e3c55f34fb36dfe61 operatorbundle_name = clusterlogging.4.3.33-202008111029.p0 image = registry.redhat.io/openshift4/ose-oauth-proxy@sha256:6b4db07f6e6c962fc96473d86c44532c93b146bbefe311d0c348117bf759c506 operatorbundle_name = clusterlogging.4.3.33-202008111029.p0 ...
Use the results from the previous step to edit the
mapping.txt
file to only include the subset of images you want to mirror.For example, you can use the
image
values from the previous example output to find that the following matching lines exist in yourmapping.txt
file:Matching image mappings in
mapping.txt
registry.redhat.io/openshift4/ose-logging-kibana5@sha256:aa4a8b2a00836d0e28aa6497ad90a3c116f135f382d8211e3c55f34fb36dfe61=<registry_host_name>:<port>/openshift4-ose-logging-kibana5:a767c8f0 registry.redhat.io/openshift4/ose-oauth-proxy@sha256:6b4db07f6e6c962fc96473d86c44532c93b146bbefe311d0c348117bf759c506=<registry_host_name>:<port>/openshift4-ose-oauth-proxy:3754ea2b
In this example, if you only want to mirror these images, you would then remove all other entries in the
mapping.txt
file and leave only the above two lines.
Still on your workstation with unrestricted network access, use your modified
mapping.txt
file to mirror the images to your registry using theoc image mirror
command:$ oc image mirror \ [-a ${REG_CREDS}] \ --filter-by-os='.*' \ -f ./redhat-operators-manifests/mapping.txt
WarningIf the
--filter-by-os
flag remains unset or set to any value other than.*
, the command filters out different architectures, which changes the digest of the manifest list, also known as a multi-arch image. The incorrect digest causes deployments of those images and Operators on disconnected clusters to fail.
Apply the
ImageContentSourcePolicy
object:$ oc apply -f ./redhat-operators-manifests/imageContentSourcePolicy.yaml
Create a
CatalogSource
object that references your catalog image.Modify the following to your specifications and save it as a
catalogsource.yaml
file:apiVersion: operators.coreos.com/v1alpha1 kind: CatalogSource metadata: name: my-operator-catalog namespace: openshift-marketplace spec: sourceType: grpc image: <registry_host_name>:<port>/olm/redhat-operators:v1 1 displayName: My Operator Catalog publisher: grpc
- 1
- Specify your custom Operator catalog image.
Use the file to create the
CatalogSource
object:$ oc create -f catalogsource.yaml
Verify the following resources are created successfully.
Check the pods:
$ oc get pods -n openshift-marketplace
Example output
NAME READY STATUS RESTARTS AGE my-operator-catalog-6njx6 1/1 Running 0 28s marketplace-operator-d9f549946-96sgr 1/1 Running 0 26h
Check the catalog source:
$ oc get catalogsource -n openshift-marketplace
Example output
NAME DISPLAY TYPE PUBLISHER AGE my-operator-catalog My Operator Catalog grpc 5s
Check the package manifest:
$ oc get packagemanifest -n openshift-marketplace
Example output
NAME CATALOG AGE etcd My Operator Catalog 34s
You can now install the Operators from the OperatorHub page on your restricted network OpenShift Container Platform cluster web console.
Additional resources
3.7.1.4. Updating an Operator catalog image
After a cluster administrator has configured OperatorHub to use custom Operator catalog images, administrators can keep their OpenShift Container Platform cluster up to date with the latest Operators by capturing updates made to App Registry catalogs provided by Red Hat. This is done by building and pushing a new Operator catalog image, then replacing the existing spec.image
parameter in the CatalogSource
object with the new image digest.
For this example, the procedure assumes a custom redhat-operators
catalog image is already configured for use with OperatorHub.
Only the Linux version of the oc
client can be used for this procedure, because the Windows and macOS versions do not provide the oc adm catalog build
command.
Prerequisites
- Workstation with unrestricted network access
-
oc
version 4.3.5+ Linux client -
podman
version 1.4.4+ - Access to mirror registry that supports Docker v2-2
- OperatorHub configured to use custom catalog images
If you are working with private registries, set the
REG_CREDS
environment variable to the file path of your registry credentials for use in later steps. For example, for thepodman
CLI:$ REG_CREDS=${XDG_RUNTIME_DIR}/containers/auth.json
If you are working with private namespaces that your quay.io account has access to, you must set a Quay authentication token. Set the
AUTH_TOKEN
environment variable for use with the--auth-token
flag by making a request against the login API using your quay.io credentials:$ AUTH_TOKEN=$(curl -sH "Content-Type: application/json" \ -XPOST https://quay.io/cnr/api/v1/users/login -d ' { "user": { "username": "'"<quay_username>"'", "password": "'"<quay_password>"'" } }' | jq -r '.token')
Procedure
On the workstation with unrestricted network access, authenticate with the target mirror registry:
$ podman login <registry_host_name>
Also authenticate with
registry.redhat.io
so that the base image can be pulled during the build:$ podman login registry.redhat.io
Build a new catalog image based on the
redhat-operators
catalog from Quay.io, tagging and pushing it to your mirror registry:$ oc adm catalog build \ --appregistry-org redhat-operators \1 --from=registry.redhat.io/openshift4/ose-operator-registry:v4.5 \2 --filter-by-os="linux/amd64" \3 --to=<registry_host_name>:<port>/olm/redhat-operators:v2 \4 [-a ${REG_CREDS}] \5 [--insecure] \6 [--auth-token "${AUTH_TOKEN}"] 7
- 1
- Organization (namespace) to pull from an App Registry instance.
- 2
- Set
--from
to theose-operator-registry
base image using the tag that matches the target OpenShift Container Platform cluster major and minor version. - 3
- Set
--filter-by-os
to the operating system and architecture to use for the base image, which must match the target OpenShift Container Platform cluster. Valid values arelinux/amd64
,linux/ppc64le
, andlinux/s390x
. - 4
- Name your catalog image and include a tag, for example,
v2
because it is the updated catalog. - 5
- Optional: If required, specify the location of your registry credentials file.
- 6
- Optional: If you do not want to configure trust for the target registry, add the
--insecure
flag. - 7
- Optional: If other application registry catalogs are used that are not public, specify a Quay authentication token.
Example output
INFO[0013] loading Bundles dir=/var/folders/st/9cskxqs53ll3wdn434vw4cd80000gn/T/300666084/manifests-829192605 ... Pushed sha256:f73d42950021f9240389f99ddc5b0c7f1b533c054ba344654ff1edaf6bf827e3 to example_registry:5000/olm/redhat-operators:v2
Mirror the contents of your catalog to your target registry. The following
oc adm catalog mirror
command extracts the contents of your custom Operator catalog image to generate the manifests required for mirroring and mirrors the images to your registry:$ oc adm catalog mirror \ <registry_host_name>:<port>/olm/redhat-operators:v2 \1 <registry_host_name>:<port> \ [-a ${REG_CREDS}] \2 [--insecure] \3 --filter-by-os='.*' 4
- 1
- Specify your new Operator catalog image.
- 2
- Optional: If required, specify the location of your registry credentials file.
- 3
- Optional: If you do not want to configure trust for the target registry, add the
--insecure
flag. - 4
- This flag is currently required due to a known issue with multiple architecture support. If the
--filter-by-os
flag remains unset or set to any value other than.*
, the command filters out different architectures, which changes the digest of the manifest list, also known as a multi-arch image. The incorrect digest causes deployments of those images and Operators on disconnected clusters to fail. For more information, see BZ#1890951.
Apply the newly generated manifests:
$ oc apply -f ./redhat-operators-manifests
ImportantIt is possible that you do not need to apply the
imageContentSourcePolicy.yaml
manifest. Complete adiff
of the files to determine if changes are necessary.Update your
CatalogSource
object that references your catalog image.If you have your original
catalogsource.yaml
file for thisCatalogSource
object:Edit your
catalogsource.yaml
file to reference your new catalog image in thespec.image
field:apiVersion: operators.coreos.com/v1alpha1 kind: CatalogSource metadata: name: my-operator-catalog namespace: openshift-marketplace spec: sourceType: grpc image: <registry_host_name>:<port>/olm/redhat-operators:v2 1 displayName: My Operator Catalog publisher: grpc
- 1
- Specify your new Operator catalog image.
Use the updated file to replace the
CatalogSource
object:$ oc replace -f catalogsource.yaml
Alternatively, edit the catalog source using the following command and reference your new catalog image in the
spec.image
parameter:$ oc edit catalogsource <catalog_source_name> -n openshift-marketplace
Updated Operators should now be available from the OperatorHub page on your OpenShift Container Platform cluster.
Additional resources
3.7.1.5. Testing an Operator catalog image
You can validate Operator catalog image content by running it as a container and querying its gRPC API. To further test the image, you can then resolve an OLM subscription by referencing the image in a CatalogSource
object. For this example, the procedure uses a custom redhat-operators
catalog image previously built and pushed to a supported registry.
Prerequisites
- A custom Operator catalog image pushed to a supported registry
-
podman
version 1.4.4+ -
oc
version 4.3.5+ - Access to mirror registry that supports Docker v2-2
-
grpcurl
Procedure
Pull the Operator catalog image:
$ podman pull <registry_host_name>:<port>/olm/redhat-operators:v1
Run the image:
$ podman run -p 50051:50051 \ -it <registry_host_name>:<port>/olm/redhat-operators:v1
Query the running image for available packages using
grpcurl
:$ grpcurl -plaintext localhost:50051 api.Registry/ListPackages
Example output
{ "name": "3scale-operator" } { "name": "amq-broker" } { "name": "amq-online" }
Get the latest Operator bundle in a channel:
$ grpcurl -plaintext -d '{"pkgName":"kiali-ossm","channelName":"stable"}' localhost:50051 api.Registry/GetBundleForChannel
Example output
{ "csvName": "kiali-operator.v1.0.7", "packageName": "kiali-ossm", "channelName": "stable", ...
Get the digest of the image:
$ podman inspect \ --format='{{index .RepoDigests 0}}' \ <registry_host_name>:<port>/olm/redhat-operators:v1
Example output
example_registry:5000/olm/redhat-operators@sha256:f73d42950021f9240389f99ddc5b0c7f1b533c054ba344654ff1edaf6bf827e3
Assuming an Operator group exists in namespace
my-ns
that supports your Operator and its dependencies, create aCatalogSource
object using the image digest. For example:apiVersion: operators.coreos.com/v1alpha1 kind: CatalogSource metadata: name: custom-redhat-operators namespace: my-ns spec: sourceType: grpc image: example_registry:5000/olm/redhat-operators@sha256:f73d42950021f9240389f99ddc5b0c7f1b533c054ba344654ff1edaf6bf827e3 displayName: Red Hat Operators
Create a subscription that resolves the latest available
servicemeshoperator
and its dependencies from your catalog image:apiVersion: operators.coreos.com/v1alpha1 kind: Subscription metadata: name: servicemeshoperator namespace: my-ns spec: source: custom-redhat-operators sourceNamespace: my-ns name: servicemeshoperator channel: "1.0"
3.7.2. Custom catalogs using Bundle Format
3.7.2.1. opm
CLI
The new opm
CLI tool is introduced alongside the new Bundle Format. This tool allows you to create and maintain catalogs of Operators from a list of bundles, called an index, that are equivalent to a "repository". The result is a container image, called an index image, which can be stored in a container registry and then installed on a cluster.
An index contains a database of pointers to Operator manifest content that can be queried via an included API that is served when the container image is run. On OpenShift Container Platform, OLM can use the index image as a catalog by referencing it in a CatalogSource, which polls the image at regular intervals to enable frequent updates to installed Operators on the cluster.
Additional resources
- To create a bundle image using the Operator SDK, see Working with bundle images.
3.7.2.2. Installing opm
You can install the opm
CLI tool on your workstation.
Prerequisites
-
podman
version 1.4.4+
Procedure
Set the
REG_CREDS
environment variable to the file path of your registry credentials for use in later steps. For example, for thepodman
CLI:$ REG_CREDS=${XDG_RUNTIME_DIR}/containers/auth.json
Authenticate with
registry.redhat.io
:$ podman login registry.redhat.io
Extract the
opm
binary from the Operator Registry image and copy it to your local file system:$ oc image extract registry.redhat.io/openshift4/ose-operator-registry:v4.5 \ -a ${REG_CREDS} \1 --path /usr/bin/opm:. \ --confirm
- 1
- Specify the location of your registry credentials file.
Make the binary executable:
$ chmod +x ./opm
Place the file anywhere in your
PATH
, such as/usr/local/bin/
.$ sudo mv ./opm /usr/local/bin/
Verify that the client was installed correctly:
$ opm version
Example output
Version: version.Version{OpmVersion:"1.12.3", GitCommit:"", BuildDate:"2020-07-01T23:18:58Z", GoOs:"linux", GoArch:"amd64"}
3.7.2.3. Creating an index image
You can create an index image using the opm
CLI.
Prerequisites
-
opm
version 1.12.3+ -
podman
version 1.4.4+ - A bundle image built and pushed to a registry.
Procedure
Start a new index:
$ opm index add \ --bundles quay.io/<namespace>/test-operator:v0.1.0 \1 --tag quay.io/<namespace>/test-catalog:latest \2 [--binary-image <registry_base_image>] 3
Push the index image to a registry:
$ podman push quay.io/<namespace>/test-catalog:latest
3.7.2.4. Creating a catalog from an index image
You can create a catalog from an index image and apply it to an OpenShift Container Platform cluster.
Prerequisites
- An index image built and pushed to a registry.
Procedure
Apply a
CatalogSource
object to your cluster that references your index image:$ cat <<EOF | oc apply -f - apiVersion: operators.coreos.com/v1alpha1 kind: CatalogSource metadata: name: test-catalog namespace: openshift-marketplace spec: sourceType: grpc image: quay.io/<namespace>/test-catalog:latest 1 displayName: Test Catalog updateStrategy: registryPoll: 2 interval: 30m EOF
Verify using the OpenShift Container Platform web console or CLI that the catalog loaded successfully and that packages are available. For example, using the CLI:
Check the pods:
$ oc get pods -n openshift-marketplace
Check the catalog source:
$ oc get catalogsource -n openshift-marketplace
Check the package manifest:
$ oc get packagemanifests -n openshift-marketplace
3.7.2.5. Updating an index image
You can update an existing index image using the opm
CLI.
Prerequisites
-
opm
version 1.12.3+ -
podman
version 1.4.4+ - An index image built and pushed to a registry.
-
A
CatalogSource
object created and applied to a cluster.
Procedure
Update the existing index:
$ opm index add \ --bundles quay.io/<namespace>/another-operator:v1 \1 --from-index quay.io/<namespace>/test-catalog:latest \2 --tag quay.io/<namespace>/test-catalog:latest 3
Push the updated index image:
$ podman push quay.io/<namespace>/test-catalog:latest
After Operator Lifecycle Manager (OLM) polls the index image at its regular interval, verify that the new packages are successfully added:
$ oc get packagemanifests -n openshift-marketplace
3.8. Using Operator Lifecycle Manager on restricted networks
For OpenShift Container Platform clusters that are installed on restricted networks, also known as disconnected clusters, Operator Lifecycle Manager (OLM) by default cannot access the Red Hat-provided OperatorHub sources hosted remotely on Quay.io because those remote sources require full Internet connectivity.
However, as a cluster administrator you can still enable your cluster to use OLM in a restricted network if you have a workstation that has full Internet access. The workstation is used to prepare local mirrors of the remote OperatorHub sources, and requires full Internet access to pull the remote content.
This guide describes the following process that is required to enable OLM in restricted networks:
- Disable the default remote OperatorHub sources for OLM.
- Use a workstation with full Internet access to create local mirrors of the OperatorHub content.
- Configure OLM to install and manage Operators from the local sources instead of the default remote sources.
After enabling OLM in a restricted network, you can continue to use your unrestricted workstation to keep your local OperatorHub sources updated as newer versions of Operators are released.
While OLM can manage Operators from local sources, the ability for a given Operator to run successfully in a restricted network still depends on the Operator itself. The Operator must:
-
List any related images, or other container images that the Operator might require to perform their functions, in the
relatedImages
parameter of itsClusterServiceVersion
(CSV) object. - Reference all specified images by a digest (SHA) and not by a tag.
See the following Red Hat Knowledgebase Article for a list of Red Hat Operators that support running in disconnected mode:
Additional resources
3.8.1. Understanding Operator catalog images
Operator Lifecycle Manager (OLM) always installs Operators from the latest version of an Operator catalog. For OpenShift Container Platform 4.5, Red Hat-provided Operators are distributed via Quay App Registry catalogs from quay.io.
Catalog | Description |
---|---|
| Public catalog for Red Hat products packaged and shipped by Red Hat. Supported by Red Hat. |
| Public catalog for products from leading independent software vendors (ISVs). Red Hat partners with ISVs to package and ship. Supported by the ISV. |
| Public catalog for software maintained by relevant representatives in the operator-framework/community-operators GitHub repository. No official support. |
As catalogs are updated, the latest versions of Operators change, and older versions may be removed or altered. This behavior can cause problems maintaining reproducible installs over time. In addition, when OLM runs on an OpenShift Container Platform cluster in a restricted network environment, it is unable to access the catalogs from quay.io directly.
Using the oc adm catalog build
command, cluster administrators can create an Operator catalog image. An Operator catalog image is:
- a point-in-time export of an App Registry type catalog’s content.
- the result of converting an App Registry catalog to a container image type catalog.
- an immutable artifact.
Creating an Operator catalog image provides a simple way to use this content without incurring the aforementioned issues.
3.8.2. Building an Operator catalog image
Cluster administrators can build a custom Operator catalog image based on the Package Manifest Format to be used by Operator Lifecycle Manager (OLM). The catalog image can be pushed to a container image registry that supports Docker v2-2. For a cluster on a restricted network, this registry can be a registry that the cluster has network access to, such as a mirror registry created during a restricted network cluster installation.
The internal registry of the OpenShift Container Platform cluster cannot be used as the target registry because it does not support pushing without a tag, which is required during the mirroring process.
For this example, the procedure assumes use of a mirror registry that has access to both your network and the Internet.
Only the Linux version of the oc
client can be used for this procedure, because the Windows and macOS versions do not provide the oc adm catalog build
command.
Prerequisites
- Workstation with unrestricted network access
-
oc
version 4.3.5+ Linux client -
podman
version 1.4.4+ - Access to mirror registry that supports Docker v2-2
If you are working with private registries, set the
REG_CREDS
environment variable to the file path of your registry credentials for use in later steps. For example, for thepodman
CLI:$ REG_CREDS=${XDG_RUNTIME_DIR}/containers/auth.json
If you are working with private namespaces that your quay.io account has access to, you must set a Quay authentication token. Set the
AUTH_TOKEN
environment variable for use with the--auth-token
flag by making a request against the login API using your quay.io credentials:$ AUTH_TOKEN=$(curl -sH "Content-Type: application/json" \ -XPOST https://quay.io/cnr/api/v1/users/login -d ' { "user": { "username": "'"<quay_username>"'", "password": "'"<quay_password>"'" } }' | jq -r '.token')
Procedure
On the workstation with unrestricted network access, authenticate with the target mirror registry:
$ podman login <registry_host_name>
Also authenticate with
registry.redhat.io
so that the base image can be pulled during the build:$ podman login registry.redhat.io
Build a catalog image based on the
redhat-operators
catalog from Quay.io, tagging and pushing it to your mirror registry:$ oc adm catalog build \ --appregistry-org redhat-operators \1 --from=registry.redhat.io/openshift4/ose-operator-registry:v4.5 \2 --filter-by-os="linux/amd64" \3 --to=<registry_host_name>:<port>/olm/redhat-operators:v1 \4 [-a ${REG_CREDS}] \5 [--insecure] \6 [--auth-token "${AUTH_TOKEN}"] 7
- 1
- Organization (namespace) to pull from an App Registry instance.
- 2
- Set
--from
to theose-operator-registry
base image using the tag that matches the target OpenShift Container Platform cluster major and minor version. - 3
- Set
--filter-by-os
to the operating system and architecture to use for the base image, which must match the target OpenShift Container Platform cluster. Valid values arelinux/amd64
,linux/ppc64le
, andlinux/s390x
. - 4
- Name your catalog image and include a tag, for example,
v1
. - 5
- Optional: If required, specify the location of your registry credentials file.
- 6
- Optional: If you do not want to configure trust for the target registry, add the
--insecure
flag. - 7
- Optional: If other application registry catalogs are used that are not public, specify a Quay authentication token.
Example output
INFO[0013] loading Bundles dir=/var/folders/st/9cskxqs53ll3wdn434vw4cd80000gn/T/300666084/manifests-829192605 ... Pushed sha256:f73d42950021f9240389f99ddc5b0c7f1b533c054ba344654ff1edaf6bf827e3 to example_registry:5000/olm/redhat-operators:v1
Sometimes invalid manifests are accidentally introduced catalogs provided by Red Hat; when this happens, you might see some errors:
Example output with errors
... INFO[0014] directory dir=/var/folders/st/9cskxqs53ll3wdn434vw4cd80000gn/T/300666084/manifests-829192605 file=4.2 load=package W1114 19:42:37.876180 34665 builder.go:141] error building database: error loading package into db: fuse-camel-k-operator.v7.5.0 specifies replacement that couldn't be found Uploading ... 244.9kB/s
These errors are usually non-fatal, and if the Operator package mentioned does not contain an Operator you plan to install or a dependency of one, then they can be ignored.
Additional resources
3.8.3. Configuring OperatorHub for restricted networks
Cluster administrators can configure OLM and OperatorHub to use local content in a restricted network environment using a custom Operator catalog image. For this example, the procedure uses a custom redhat-operators
catalog image previously built and pushed to a supported registry.
Prerequisites
- Workstation with unrestricted network access
- A custom Operator catalog image pushed to a supported registry
-
oc
version 4.3.5+ -
podman
version 1.4.4+ - Access to mirror registry that supports Docker v2-2
If you are working with private registries, set the
REG_CREDS
environment variable to the file path of your registry credentials for use in later steps. For example, for thepodman
CLI:$ REG_CREDS=${XDG_RUNTIME_DIR}/containers/auth.json
Procedure
Disable the default
OperatorSource
objects by addingdisableAllDefaultSources: true
to the spec:$ oc patch OperatorHub cluster --type json \ -p '[{"op": "add", "path": "/spec/disableAllDefaultSources", "value": true}]'
This disables the default sources that are configured by default during an OpenShift Container Platform installation.
The
oc adm catalog mirror
command extracts the contents of your custom Operator catalog image to generate the manifests required for mirroring. You can choose to either:- Allow the default behavior of the command to automatically mirror all of the image content to your mirror registry after generating manifests, or
-
Add the
--manifests-only
flag to only generate the manifests required for mirroring, but do not actually mirror the image content to a registry yet. This can be useful for reviewing what will be mirrored, and it allows you to make any changes to the mapping list if you only require a subset of the content. You can then use that file with theoc image mirror
command to mirror the modified list of images in a later step.
On your workstation with unrestricted network access, run the following command:
$ oc adm catalog mirror \ <registry_host_name>:<port>/olm/redhat-operators:v1 \1 <registry_host_name>:<port> \ [-a ${REG_CREDS}] \2 [--insecure] \3 --filter-by-os='.*' \4 [--manifests-only] 5
- 1
- Specify your Operator catalog image.
- 2
- Optional: If required, specify the location of your registry credentials file.
- 3
- Optional: If you do not want to configure trust for the target registry, add the
--insecure
flag. - 4
- This flag is currently required due to a known issue with multiple architecture support.
- 5
- Optional: Only generate the manifests required for mirroring and do not actually mirror the image content to a registry.
WarningIf the
--filter-by-os
flag remains unset or set to any value other than.*
, the command filters out different architectures, which changes the digest of the manifest list, also known as a multi-arch image. The incorrect digest causes deployments of those images and Operators on disconnected clusters to fail. For more information, see BZ#1890951.Example output
using database path mapping: /:/tmp/190214037 wrote database to /tmp/190214037 using database at: /tmp/190214037/bundles.db 1 ...
- 1
- Temporary database generated by the command.
After running the command, a
<image_name>-manifests/
directory is created in the current directory and generates the following files:-
The
imageContentSourcePolicy.yaml
file defines anImageContentSourcePolicy
object that can configure nodes to translate between the image references stored in Operator manifests and the mirrored registry. -
The
mapping.txt
file contains all of the source images and where to map them in the target registry. This file is compatible with theoc image mirror
command and can be used to further customize the mirroring configuration.
If you used the
--manifests-only
flag in the previous step and want to mirror only a subset of the content:Modify the list of images in your
mapping.txt
file to your specifications. If you are unsure of the exact names and versions of the subset of images you want to mirror, use the following steps to find them:Run the
sqlite3
tool against the temporary database that was generated by theoc adm catalog mirror
command to retrieve a list of images matching a general search query. The output helps inform how you will later edit yourmapping.txt
file.For example, to retrieve a list of images that are similar to the string
clusterlogging.4.3
:$ echo "select * from related_image \ where operatorbundle_name like 'clusterlogging.4.3%';" \ | sqlite3 -line /tmp/190214037/bundles.db 1
- 1
- Refer to the previous output of the
oc adm catalog mirror
command to find the path of the database file.
Example output
image = registry.redhat.io/openshift4/ose-logging-kibana5@sha256:aa4a8b2a00836d0e28aa6497ad90a3c116f135f382d8211e3c55f34fb36dfe61 operatorbundle_name = clusterlogging.4.3.33-202008111029.p0 image = registry.redhat.io/openshift4/ose-oauth-proxy@sha256:6b4db07f6e6c962fc96473d86c44532c93b146bbefe311d0c348117bf759c506 operatorbundle_name = clusterlogging.4.3.33-202008111029.p0 ...
Use the results from the previous step to edit the
mapping.txt
file to only include the subset of images you want to mirror.For example, you can use the
image
values from the previous example output to find that the following matching lines exist in yourmapping.txt
file:Matching image mappings in
mapping.txt
registry.redhat.io/openshift4/ose-logging-kibana5@sha256:aa4a8b2a00836d0e28aa6497ad90a3c116f135f382d8211e3c55f34fb36dfe61=<registry_host_name>:<port>/openshift4-ose-logging-kibana5:a767c8f0 registry.redhat.io/openshift4/ose-oauth-proxy@sha256:6b4db07f6e6c962fc96473d86c44532c93b146bbefe311d0c348117bf759c506=<registry_host_name>:<port>/openshift4-ose-oauth-proxy:3754ea2b
In this example, if you only want to mirror these images, you would then remove all other entries in the
mapping.txt
file and leave only the above two lines.
Still on your workstation with unrestricted network access, use your modified
mapping.txt
file to mirror the images to your registry using theoc image mirror
command:$ oc image mirror \ [-a ${REG_CREDS}] \ --filter-by-os='.*' \ -f ./redhat-operators-manifests/mapping.txt
WarningIf the
--filter-by-os
flag remains unset or set to any value other than.*
, the command filters out different architectures, which changes the digest of the manifest list, also known as a multi-arch image. The incorrect digest causes deployments of those images and Operators on disconnected clusters to fail.
Apply the
ImageContentSourcePolicy
object:$ oc apply -f ./redhat-operators-manifests/imageContentSourcePolicy.yaml
Create a
CatalogSource
object that references your catalog image.Modify the following to your specifications and save it as a
catalogsource.yaml
file:apiVersion: operators.coreos.com/v1alpha1 kind: CatalogSource metadata: name: my-operator-catalog namespace: openshift-marketplace spec: sourceType: grpc image: <registry_host_name>:<port>/olm/redhat-operators:v1 1 displayName: My Operator Catalog publisher: grpc
- 1
- Specify your custom Operator catalog image.
Use the file to create the
CatalogSource
object:$ oc create -f catalogsource.yaml
Verify the following resources are created successfully.
Check the pods:
$ oc get pods -n openshift-marketplace
Example output
NAME READY STATUS RESTARTS AGE my-operator-catalog-6njx6 1/1 Running 0 28s marketplace-operator-d9f549946-96sgr 1/1 Running 0 26h
Check the catalog source:
$ oc get catalogsource -n openshift-marketplace
Example output
NAME DISPLAY TYPE PUBLISHER AGE my-operator-catalog My Operator Catalog grpc 5s
Check the package manifest:
$ oc get packagemanifest -n openshift-marketplace
Example output
NAME CATALOG AGE etcd My Operator Catalog 34s
You can now install the Operators from the OperatorHub page on your restricted network OpenShift Container Platform cluster web console.
3.8.4. Updating an Operator catalog image
After a cluster administrator has configured OperatorHub to use custom Operator catalog images, administrators can keep their OpenShift Container Platform cluster up to date with the latest Operators by capturing updates made to App Registry catalogs provided by Red Hat. This is done by building and pushing a new Operator catalog image, then replacing the existing spec.image
parameter in the CatalogSource
object with the new image digest.
For this example, the procedure assumes a custom redhat-operators
catalog image is already configured for use with OperatorHub.
Only the Linux version of the oc
client can be used for this procedure, because the Windows and macOS versions do not provide the oc adm catalog build
command.
Prerequisites
- Workstation with unrestricted network access
-
oc
version 4.3.5+ Linux client -
podman
version 1.4.4+ - Access to mirror registry that supports Docker v2-2
- OperatorHub configured to use custom catalog images
If you are working with private registries, set the
REG_CREDS
environment variable to the file path of your registry credentials for use in later steps. For example, for thepodman
CLI:$ REG_CREDS=${XDG_RUNTIME_DIR}/containers/auth.json
If you are working with private namespaces that your quay.io account has access to, you must set a Quay authentication token. Set the
AUTH_TOKEN
environment variable for use with the--auth-token
flag by making a request against the login API using your quay.io credentials:$ AUTH_TOKEN=$(curl -sH "Content-Type: application/json" \ -XPOST https://quay.io/cnr/api/v1/users/login -d ' { "user": { "username": "'"<quay_username>"'", "password": "'"<quay_password>"'" } }' | jq -r '.token')
Procedure
On the workstation with unrestricted network access, authenticate with the target mirror registry:
$ podman login <registry_host_name>
Also authenticate with
registry.redhat.io
so that the base image can be pulled during the build:$ podman login registry.redhat.io
Build a new catalog image based on the
redhat-operators
catalog from Quay.io, tagging and pushing it to your mirror registry:$ oc adm catalog build \ --appregistry-org redhat-operators \1 --from=registry.redhat.io/openshift4/ose-operator-registry:v4.5 \2 --filter-by-os="linux/amd64" \3 --to=<registry_host_name>:<port>/olm/redhat-operators:v2 \4 [-a ${REG_CREDS}] \5 [--insecure] \6 [--auth-token "${AUTH_TOKEN}"] 7
- 1
- Organization (namespace) to pull from an App Registry instance.
- 2
- Set
--from
to theose-operator-registry
base image using the tag that matches the target OpenShift Container Platform cluster major and minor version. - 3
- Set
--filter-by-os
to the operating system and architecture to use for the base image, which must match the target OpenShift Container Platform cluster. Valid values arelinux/amd64
,linux/ppc64le
, andlinux/s390x
. - 4
- Name your catalog image and include a tag, for example,
v2
because it is the updated catalog. - 5
- Optional: If required, specify the location of your registry credentials file.
- 6
- Optional: If you do not want to configure trust for the target registry, add the
--insecure
flag. - 7
- Optional: If other application registry catalogs are used that are not public, specify a Quay authentication token.
Example output
INFO[0013] loading Bundles dir=/var/folders/st/9cskxqs53ll3wdn434vw4cd80000gn/T/300666084/manifests-829192605 ... Pushed sha256:f73d42950021f9240389f99ddc5b0c7f1b533c054ba344654ff1edaf6bf827e3 to example_registry:5000/olm/redhat-operators:v2
Mirror the contents of your catalog to your target registry. The following
oc adm catalog mirror
command extracts the contents of your custom Operator catalog image to generate the manifests required for mirroring and mirrors the images to your registry:$ oc adm catalog mirror \ <registry_host_name>:<port>/olm/redhat-operators:v2 \1 <registry_host_name>:<port> \ [-a ${REG_CREDS}] \2 [--insecure] \3 --filter-by-os='.*' 4
- 1
- Specify your new Operator catalog image.
- 2
- Optional: If required, specify the location of your registry credentials file.
- 3
- Optional: If you do not want to configure trust for the target registry, add the
--insecure
flag. - 4
- This flag is currently required due to a known issue with multiple architecture support. If the
--filter-by-os
flag remains unset or set to any value other than.*
, the command filters out different architectures, which changes the digest of the manifest list, also known as a multi-arch image. The incorrect digest causes deployments of those images and Operators on disconnected clusters to fail. For more information, see BZ#1890951.
Apply the newly generated manifests:
$ oc apply -f ./redhat-operators-manifests
ImportantIt is possible that you do not need to apply the
imageContentSourcePolicy.yaml
manifest. Complete adiff
of the files to determine if changes are necessary.Update your
CatalogSource
object that references your catalog image.If you have your original
catalogsource.yaml
file for thisCatalogSource
object:Edit your
catalogsource.yaml
file to reference your new catalog image in thespec.image
field:apiVersion: operators.coreos.com/v1alpha1 kind: CatalogSource metadata: name: my-operator-catalog namespace: openshift-marketplace spec: sourceType: grpc image: <registry_host_name>:<port>/olm/redhat-operators:v2 1 displayName: My Operator Catalog publisher: grpc
- 1
- Specify your new Operator catalog image.
Use the updated file to replace the
CatalogSource
object:$ oc replace -f catalogsource.yaml
Alternatively, edit the catalog source using the following command and reference your new catalog image in the
spec.image
parameter:$ oc edit catalogsource <catalog_source_name> -n openshift-marketplace
Updated Operators should now be available from the OperatorHub page on your OpenShift Container Platform cluster.
Additional resources
3.8.5. Testing an Operator catalog image
You can validate Operator catalog image content by running it as a container and querying its gRPC API. To further test the image, you can then resolve an OLM subscription by referencing the image in a CatalogSource
object. For this example, the procedure uses a custom redhat-operators
catalog image previously built and pushed to a supported registry.
Prerequisites
- A custom Operator catalog image pushed to a supported registry
-
podman
version 1.4.4+ -
oc
version 4.3.5+ - Access to mirror registry that supports Docker v2-2
-
grpcurl
Procedure
Pull the Operator catalog image:
$ podman pull <registry_host_name>:<port>/olm/redhat-operators:v1
Run the image:
$ podman run -p 50051:50051 \ -it <registry_host_name>:<port>/olm/redhat-operators:v1
Query the running image for available packages using
grpcurl
:$ grpcurl -plaintext localhost:50051 api.Registry/ListPackages
Example output
{ "name": "3scale-operator" } { "name": "amq-broker" } { "name": "amq-online" }
Get the latest Operator bundle in a channel:
$ grpcurl -plaintext -d '{"pkgName":"kiali-ossm","channelName":"stable"}' localhost:50051 api.Registry/GetBundleForChannel
Example output
{ "csvName": "kiali-operator.v1.0.7", "packageName": "kiali-ossm", "channelName": "stable", ...
Get the digest of the image:
$ podman inspect \ --format='{{index .RepoDigests 0}}' \ <registry_host_name>:<port>/olm/redhat-operators:v1
Example output
example_registry:5000/olm/redhat-operators@sha256:f73d42950021f9240389f99ddc5b0c7f1b533c054ba344654ff1edaf6bf827e3
Assuming an Operator group exists in namespace
my-ns
that supports your Operator and its dependencies, create aCatalogSource
object using the image digest. For example:apiVersion: operators.coreos.com/v1alpha1 kind: CatalogSource metadata: name: custom-redhat-operators namespace: my-ns spec: sourceType: grpc image: example_registry:5000/olm/redhat-operators@sha256:f73d42950021f9240389f99ddc5b0c7f1b533c054ba344654ff1edaf6bf827e3 displayName: Red Hat Operators
Create a subscription that resolves the latest available
servicemeshoperator
and its dependencies from your catalog image:apiVersion: operators.coreos.com/v1alpha1 kind: Subscription metadata: name: servicemeshoperator namespace: my-ns spec: source: custom-redhat-operators sourceNamespace: my-ns name: servicemeshoperator channel: "1.0"