Decommission a hybrid region

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

Decommission a hybrid region

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

Delete the Apigee instance in the context you just selected with the apigeectl command:
```
Apigeectl delete --all -f overrides.yaml
```

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

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
```