第 1 章 Installing optional RPM packages
You can install optional RPM packages with MicroShift to provide additional cluster and application services.
1.1. Installing optional packages
When you install MicroShift, optional RPM packages can be added. Examples of optional RPMs include those designed to expand your network, add and manage operators, and manage applications. Use the following procedures to add the packages that you need.
When you install MicroShift, the Operator Lifecycle Manager (OLM) package is not installed by default. You can install the OLM on your MicroShift instance using an RPM package.
Procedure
Install the OLM package by running the following command:
$ sudo dnf install microshift-olmTo apply the manifest from the package to an active cluster, run the following command:
$ sudo systemctl restart microshift
You can use a lightweight version of OpenShift GitOps with MicroShift to help manage your applications by installing the microshift-gitops RPM package. The microshift-gitops RPM package includes the necessary manifests to run core Argo CD.
The Argo CD CLI is not available on MicroShift. This process installs basic GitOps functions.
Prerequisites
- You installed MicroShift version 4.14 or later.
- You configured 250MB RAM of additional storage.
Procedure
Enable the GitOps repository with the subscription manager by running the following command:
$ sudo subscription-manager repos --enable=gitops-1.16-for-rhel-9-$(uname -m)-rpmsInstall the MicroShift GitOps package by running the following command:
$ sudo dnf install -y microshift-gitopsTo deploy Argo CD pods, restart MicroShift by running the following command:
$ sudo systemctl restart microshift
Verification
You can verify that your pods are running properly by entering the following command:
$ oc get pods -n openshift-gitopsExample output
NAME READY STATUS RESTARTS AGE argocd-application-controller-0 1/1 Running 0 4m11s argocd-redis-56844446bc-dzmhf 1/1 Running 0 4m12s argocd-repo-server-57b4f896cf-7qk8l 1/1 Running 0 4m12s
1.1.3. Installing the multiple networks plugin
Use this procedure to install the MicroShift Multus CNI plugin alongside a new MicroShift installation. The MicroShift Multus Container Network Interface (CNI) plugin is not installed by default. If you want to attach additional networks to a pod for high-performance network configurations, install the microshift-multus RPM package.
Uninstalling the MicroShift Multus CNI is not supported.
Procedure
Install the Multus RPM package by running the following command:
$ sudo dnf install microshift-multus提示If you create your custom resources (CRs) while you are completing your installation of MicroShift, you can avoid restarting the service to apply them.
Next steps
- Continue with your new MicroShift installation, including any add-ons.
- Create the custom resources (CRs) needed for your MicroShift Multus CNI plugin.
- Configure other networking CNIs as needed.
- After you have finished installing all of the RPMs that you want to include, start the MicroShift service. The MicroShift Multus CNI plugin is automatically deployed.
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