Add operators in OKD or OpenShift with YAML files¶

Normally you want to install operators not via the Web console. It's more GitOps to install them with a manifest. Here comes a short description how this is done easily!

Find the parameters of your operator¶

1. Web console login with a user with cluster-admin role

2. Goto "OperatorHub"

3. Search your operator (we use the namespace-configuration-operator as example

4. Click "Install" (there's no install now)

5. You get something like the following URL and screen:

   • URL https://........./operatorhub/subscribe?pkg=namespace-configuration-operator&catalog=community-operators&catalogNamespace=openshift-marketplace&targetNamespace=undefined
   • 

6. Now you can see the parameters for the operator subscription yaml. You need:

   • name: comes from the URL parameter: pkg=
   • namespace: is openshift-operators normally
   • channel: you can see the channels in the install mask
   • name: comes from the URL parameter: pkg=
   • source: comes from the URL parameter: catalog=
   • sourceNamespace: comes from the URL parameter: catalogNamespace=

7. Now you can Cancel the install (we want to install via manifest).

8. if you've recorded all the parameter, here's the resulting YAML manifest:

   apiVersion: operators.coreos.com/v1alpha1
   kind: Subscription
   metadata:
     name: namespace-configuration-operator
     namespace: openshift-operators 
   spec:
     channel: alpha 
     name: namespace-configuration-operator
     source: community-operators
     sourceNamespace: openshift-marketplace
   

9. Save the manifest and apply it with oc apply -f filename.yaml

Reference: https://docs.okd.io/latest/operators/admin/olm-adding-operators-to-cluster.html