一、组件方式检查
1. Master节点：
root>> kubectl get cs
2. Node 节点：
无
二、服务方式检查
1. Master 节点：
root>> systemctl status etcd
root>> systemctl status kube-apiserver
root>> systemctl status kube-controller-manager
root>> systemctl status kube-scheduler
2. Node 节点
root>> systemctl status flanneld
root>> systemctl status kube-proxy
root>> systemctl status kubelet
root>> systemctl status docker