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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
Install the OLM package by running the following command:
$ sudo dnf install microshift-olm
To apply the manifest from the package to an active cluster, run the following command:
$ 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. Install the necessary Argo CD manifests using an RPM package. This RPM package included the necessary manifests that runs core Argo CD.
This process installs the basic GitOps functionalities. The Argo CD CLI is not available on MicroShift.
Prerequisites
- You installed MicroShift version 4.14 or higher
- Additional RAM storage of 250MB recommended
Procedure
Enable the GitOps repository with the subscription manager by running the following command:
$ sudo subscription-manager repos --enable=gitops-1.12-for-rhel-9-$(uname -m)-rpms
Install the GitOps package by running the following command:
$ sudo dnf install -y microshift-gitops
To deploy Argo CD pods, restart the MicroShift service by running the following command:
$ sudo systemctl restart microshift
Verification
You can verify that your pods are running properly by running the following command:
$ oc get pods -n openshift-gitops
Example 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
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.
Uninstalling the MicroShift Multus CNI is not supported.
Procedure
Install the Multus RPM package by running the following command:
$ sudo dnf install microshift-multus
TipIf 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.
Additional resources
