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Chapter 1. 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.

1.1.1. Installing the Operator Lifecycle Manager (OLM) from an RPM package

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

  1. Install the OLM package by running the following command:

    Copy to Clipboard Toggle word wrap 
    $ sudo dnf install microshift-olm

  2. To apply the manifest from the package to an active cluster, run the following command:

    Copy to Clipboard Toggle word wrap 
    $ sudo systemctl restart microshift

Additional resources

1.1.2. Installing the GitOps Argo CD manifests from an RPM package

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.

Important

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

  1. Enable the GitOps repository with the subscription manager by running the following command:

    Copy to Clipboard Toggle word wrap 
    $ sudo subscription-manager repos --enable=gitops-1.16-for-rhel-9-$(uname -m)-rpms

  2. Install the MicroShift GitOps package by running the following command:

    Copy to Clipboard Toggle word wrap 
    $ sudo dnf install -y microshift-gitops

  3. To deploy Argo CD pods, restart MicroShift by running the following command:

    Copy to Clipboard Toggle word wrap 
    $ sudo systemctl restart microshift

Verification

  • You can verify that your pods are running properly by entering the following command:

    Copy to Clipboard Toggle word wrap 
    $ oc get pods -n openshift-gitops

    Example output

    Copy to Clipboard Toggle word wrap 
    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

Additional resources

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.

Important

Uninstalling the MicroShift Multus CNI is not supported.

Procedure

  • Install the Multus RPM package by running the following command:

    Copy to Clipboard Toggle word wrap 
    $ sudo dnf install microshift-multus
    Tip

    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

  1. Continue with your new MicroShift installation, including any add-ons.
  2. Create the custom resources (CRs) needed for your MicroShift Multus CNI plugin.
  3. Configure other networking CNIs as needed.
  4. 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.

Additional resources

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