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Chapter 2. Using Argo Rollouts for progressive deployment delivery
To use Argo Rollouts and manage progressive delivery, after you install the {gitops-titel} Operator on the cluster, you can create and configure a RolloutManager
custom resource (CR) instance in the namespace of your choice. You can scope the RolloutManager
CR for single or multiple namespaces.
2.1. Prerequisites
-
You have access to the cluster with
cluster-admin
privileges. - You have access to the OpenShift Container Platform web console.
- Red Hat OpenShift GitOps 1.9.0 or a newer version is installed on your cluster.
2.2. Creating a RolloutManager custom resource
To manage progressive delivery of deployments by using Argo Rollouts in Red Hat OpenShift GitOps, you must create and configure a RolloutManager
custom resource (CR) in the namespace of your choice. By default, any new argo-rollouts
instance has permission to manage resources only in the namespace where it is deployed, but you can use Argo Rollouts in multiple namespaces as required.
Prerequisites
- Red Hat OpenShift GitOps 1.9.0 or a newer version is installed on your cluster.
Procedure
- Log in to the OpenShift Container Platform web console as a cluster administrator.
-
In the Administrator perspective, click Operators
Installed Operators. -
Create or select the project where you want to create and configure a
RolloutManager
custom resource (CR) from the Project drop-down menu. - Select Red Hat OpenShift GitOps from the installed operators.
- In the Details tab, under the Provided APIs section, click Create instance in the RolloutManager pane.
On the Create RolloutManager page, select the YAML view and use the default YAML or edit it according to your requirements:
Example:
RolloutManager
CRapiVersion: argoproj.io/v1alpha1 kind: RolloutManager metadata: name: argo-rollout namespace: openshift-gitops spec: {}
- Click Create.
- In the RolloutManager tab, under the RolloutManagers section, verify that the Status field of the RolloutManager instance shows as Phase: Available.
In the left navigation pane, verify the creation of the namespace-scoped supporting resources:
-
Click Workloads
Deployments to verify that the argo-rollouts
deployment is available with the Status showing as1 of 1 pods
running. -
Click Workloads
Secrets to verify that the argo-rollouts-notification-secret
secret is available. -
Click Networking
Services to verify that the argo-rollouts-metrics
service is available. -
Click User Management
Roles to verify that the argo-rollouts
role andargo-rollouts-aggregate-to-admin
,argo-rollouts-aggregate-to-edit
, andargo-rollouts-aggregate-to-view
cluster roles are available. -
Click User Management
RoleBindings to verify that the argo-rollouts
role binding is available.
-
Click Workloads
2.3. Deleting a RolloutManager custom resource
Uninstalling the Red Hat OpenShift GitOps Operator does not remove the resources that were created during installation. You must manually delete the RolloutManager
custom resource (CR) before you uninstall the Red Hat OpenShift GitOps Operator.
Prerequisites
- Red Hat OpenShift GitOps 1.9.0 or a newer version is installed on your cluster.
-
A
RolloutManager
CR exists in your namespace.
Procedure
- Log in to the OpenShift Container Platform web console as a cluster administrator.
-
In the Administrator perspective, click Operators
Installed Operators. -
Click the Project drop-down menu and select the project that contains the
RolloutManager
CR. - Select Red Hat OpenShift GitOps from the installed operators.
- Click the RolloutManager tab to find RolloutManager instances under the RolloutManagers section.
- Click the instance.
-
Click Actions
Delete RolloutManager from the drop-down menu, and click Delete to confirm in the dialog box. - In the RolloutManager tab, under the RolloutManagers section, verify that the RolloutManager instance is not available anymore.
In the left navigation pane, verify the deletion of the namespace-scoped supporting resources:
-
Click Workloads
Deployments to verify that the argo-rollouts
deployment is deleted. -
Click Workloads
Secrets to verify that the argo-rollouts-notification-secret
secret is deleted. -
Click Networking
Services to verify that the argo-rollouts-metrics
service is deleted. -
Click User Management
Roles to verify that the argo-rollouts
role andargo-rollouts-aggregate-to-admin
,argo-rollouts-aggregate-to-edit
, andargo-rollouts-aggregate-to-view
cluster roles are deleted. -
Click User Management
RoleBindings to verify that the argo-rollouts
role binding is deleted.
-
Click Workloads
2.4. Installing Argo Rollouts CLI on Linux
You can install the Argo Rollouts CLI on Linux.
Prerequisites
-
You have installed the OpenShift Container Platform CLI (
oc
).
Procedure
Download the latest version of the Argo Rollouts CLI binary,
kubectl-argo-rollouts
, by running the following command:$ curl -LO https://github.com/argoproj/argo-rollouts/releases/latest/download/kubectl-argo-rollouts-linux-amd64
Ensure that the
kubectl-argo-rollouts
binary is executable by running the following command:$ chmod +x ./kubectl-argo-rollouts-linux-amd64
Move the
kubectl-argo-rollouts
binary to the system path by running the following command:# mv ./kubectl-argo-rollouts-linux-amd64 /usr/local/bin/kubectl-argo-rollouts
ImportantEnsure that you have superuser privileges to run this command.
Verify that the plugin is installed correctly by running the following command and receiving the similar output:
$ oc argo rollouts version
Example output
kubectl-argo-rollouts: v1.6.6+737ca89 BuildDate: 2024-02-13T15:39:31Z 1 GitCommit: 737ca89b42e4791e96e05b438c2b8540737a2a1a GitTreeState: clean GoVersion: go1.20.14 2 Compiler: gc Platform: linux/amd64 3
2.5. Installing Argo Rollouts CLI on Mac OS
If you are a macOS user, you can install the Argo Rollouts CLI by using the Homebrew package manager.
Prerequisites
-
You have installed the Homebrew (
brew
) package manager.
Procedure
Run the following command to install the Argo Rollouts CLI:
$ brew install argoproj/tap/kubectl-argo-rollouts
2.6. Enabling Argo Rollouts UI on an Argo CD instance
To enable Argo Rollouts UI on an Argo CD instance, complete the following steps.
Prerequisites
-
You have access to the cluster with
cluster-admin
privileges. - You have installed the Red Hat OpenShift GitOps Operator on your OpenShift Container Platform cluster.
- You have configured the RolloutManager custom resource (CR).
Procedure
- Log in to the OpenShift Container Platform web console.
-
In the Administrator perspective of the web console, click Operators
Installed Operators. - Select Red Hat OpenShift GitOps from the installed Operators list and click the Argo CD tab.
-
Select the Argo CD instance in the Argo CD tab under the
openshift-gitops
namespace. Click YAML and add the following configuration to configure the Argo Rollouts UI:
Example enabling Argo Rollouts UI in the Argo CD CR
apiVersion: argoproj.io/v1beta1 kind: ArgoCD metadata: name: argocd spec: server: enableRolloutsUI: true 1
- 1
- Set this value to
true
to configure theenableRolloutsUI
field.
- Click Save.
-
In the Administrator perspective of the web console, navigate to the
menu
OpenShift GitOps Cluster Argo CD. The login page of the Argo CD Web UI is displayed in a new window. To access the Argo Rollouts UI in the Argo CD Web UI, configure a sample application that includes the Argo Rollouts resources.
NoteThe
enableRolloutsUI
field restarts the Argo CD server deployment pod, so it takes a few seconds for the Argo Rollouts extension to enable in the Argo CD Web UI.