learn how to use rook to manage the ceph block

refer

https://rook.github.io/docs/rook/master/ceph-quickstart.html

https://rook.github.io/docs/rook/master/block.html

step 1: create cluster

$ kubectl create -f cluster.yaml

step 2: create storage class

kubectl create -f storageclass.yaml

step 3: play

kubectl create -f mysql.yaml
kubectl create -f wordpress.yaml

verify

kubectl get pvc
kubectl get svc wordpress