README.gke.md

Manage Google Kubernetes Engine (GKE)

Create a (tiny) GKE Cluster

$ gcloud container clusters create cluster-1 \
		--machine-type e2-small \
		--disk-size 10 \
		--num-nodes 3

Configure kubectl to use the GKE Cluster

$ gcloud container clusters get-credentials cluster-1
Fetching cluster endpoint and auth data.
kubeconfig entry generated for cluster-1.

Create and initialize OCS StatefulSet

$ kubectl apply -f ocs-cluster/
service/diameter-acct created
service/diameter-auth created
statefulset.apps/ocs created
service/ocs-rest created
service/ocs-snmp created
service/otp-ocs created
secret/otp-dist created
service/radius-acct created
service/radius-auth created

Get list of Pods

$ kubectl get pods
NAME    READY   STATUS    RESTARTS   AGE
ocs-0   1/1     Running   0          64m
ocs-1   1/1     Running   1          63m
ocs-2   1/1     Running   0          62m

Get the log of init container

kubectl logs ocs-0 -c ocs-init

Get the log of container

kubectl logs ocs-0

Describe the pod

$ kubectl describe pod ocs-0

Attach to a GKE pod deployment which runs ocs container

$ kubectl attach -ti ocs-0 -c ocs -i -t
(ocs@ocs-0.otp-ocs.default.svc.cluster.local)1>

There is no detach so you'll need to kill the kubectl attach process

Scale up the OCS StatefulSet

$ kubectl scale --replicas=4 statefulset ocs
statefulset.apps/ocs scaled

Delete the OCS StatefulSet

$ kubectl delete -f ocs-cluster/
service "diameter-acct" deleted
service "diameter-auth" deleted
statefulset.apps "ocs" deleted
service "ocs-rest" deleted
service "ocs-snmp" deleted
service "otp-ocs" deleted
secret "otp-dist" deleted
service "radius-acct" deleted
service "radius-auth" deleted

Get all the PersistentVolumes

$ kubectl get pvc

Delete PVC

$ kubectl delete pvc ocs-data-ocs-{0,1,2}
$ kubectl delete pvc ocs-log-ocs-{0,1,2}

Delete the GKE Cluster

$ gcloud container clusters delete cluster-1