Decommission a hybrid region

This guide explains the procedure to decommission a region in a multi region environment.

Decommission a hybrid region

1. Set the kubernetes contexts to the region that needs to be decommissioned.

   List your current contexts to see the context name for each cluster:

   kubectl config get-contexts

   Set the context to the cluster and region you want to decommission:

   kubectl config use-context CONTEXT_NAME

   Where CONTEXT_NAME is the context name for the cluster and region.

   For example:

   kubectl config get-contexts
   CURRENT   NAME                                                   CLUSTER                                                AUTHINFO                                               NAMESPACE
             gke_example-org-1_us-central1_example-cluster-1        gke_example-org-1_us-central1_example-cluster-1        gke_example-org-1_us-central1_example-cluster-1        apigee
   *         gke_example-org-1_us-central1_example-cluster-2        gke_example-org-1_us-central1_example-cluster-2        gke_example-org-1_us-central1_example-cluster-2        apigee
             gke_example-org-1_us-west1_example-cluster-2           gke_example-org-1_us-west1_example-cluster-2           gke_example-org-1_us-west1_example-cluster-2           apigee
   
   kubectl config use-context gke_example-org-1_us-west1_example-cluster-2

2. Delete the Apigee instance in the context you just selected with the apigeectl command:

   Apigeectl delete --all -f overrides.yaml

3. Verify there are no pods remaining in the Apigee namespaces:

   kubectl get pods -n apigee
   kubectl get pods -n apigee-system
   kubectl get pods -n cert-manager

4. Set the context to other existing regions and make sure the cassandra datacenter is removed from the existing ring. The output should not show the removed data center details.

   kubectl exec apigee-cassandra-default-0 -n apigee  -- nodetool -u JMX_USER -pw JMX_PASSWORD status