1. Make sure tidb-operator components are running
   kubectl get pods --namespace {{ .Release.Namespace }} -l app=tidb-operator
2. Make sure TidbCluster and TidbSet CRDs are created
   kubectl get customresourcedefinitions
3. Check if tidb-volume configmap is expected
   kubectl get configmaps tidb-volume --namespace {{ .Release.Namespace }} -oyaml
4. Modify tidb-cluster/values.yaml and create a TiDB cluster by installing tidb-cluster charts
   helm install tidb-cluster