部署 etcd operator

# git clone https://github.com/coreos/etcd-operator.git
# [https://github.com/helm/charts/tree/master/stable/etcd-operator](https://github.com/helm/charts/tree/master/stable/etcd-operator)


# helm 2
helm install stable/etcd-operator --name etcd01

# helm 3
helm install stable/etcd-operator --generate-name 
helm install etcd01 stable/etcd-operator  

# helm 3
helm install stable/etcd-operator --generate-name \
--set etcdCluster.image.repository=quay.azk8s.cn/coreos/etcd-operator \
--set cluster.enabled=true

# uninstall
helm delete etcd-operator-1566325693
helm delete etcd01

## set cluster.enabled to true in values.yaml

## 
export POD=$(kubectl get pods -l app=etcd-operator-1566325693-etcd-operator-etcd-operator --namespace default --output name)
    kubectl logs $POD --namespace=default