一、如何从Kubernetes集群中移除Node 比如从集群中移除k8s-node03这个Node节点，做法如下：
1）先在master节点查看Node情况
[root@k8s-master01 ~]# kubectl get nodes NAME STATUS ROLES AGE VERSION k8s-node01 Ready <none> 47d v1.14.2 k8s-node02 Ready <none> 47d v1.14.2 k8s-node03 Ready <none> 47d v1.14.2 2）接着查看下pod情况 [root@k8s-master01 ~]# kubectl get pods -o wide NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES dnsutils-ds-5sc4z 1/1 Running 963 40d 172.30.56.3 k8s-node02 <none> <none> dnsutils-ds-h546r 1/1 Running 963 40d 172.30.72.5 k8s-node03 <none> <none> dnsutils-ds-jx5kx 1/1 Running 963 40d 172.30.88.4 k8s-node01 <none> <none> kevin-nginx 1/1 Running 0 27d 172.30.72.11 k8s-node03 <none> <none> my-nginx-5dd67b97fb-69gvm 1/1 Running 0 40d 172.30.72.4 k8s-node03 <none> <none> my-nginx-5dd67b97fb-8j4k6 1/1 Running 0 40d 172.30.88.3 k8s-node01 <none> <none> nginx-7db9fccd9b-dkdzf 1/1 Running 0 27d 172.30.88.8 k8s-node01 <none> <none> nginx-7db9fccd9b-t8njb 1/1 Running 0 27d 172.30.72.10 k8s-node03 <none> <none> nginx-7db9fccd9b-vrp9f 1/1 Running 0 27d 172.30.56.6 k8s-node02 <none> <none> nginx-ds-4lf8z 1/1 Running 0 41d 172.30.56.2 k8s-node02 <none> <none> nginx-ds-6kfsw 1/1 Running 0 41d 172.30.72.2 k8s-node03 <none> <none> nginx-ds-xqdgw 1/1 Running 0 41d 172.30.88.2 k8s-node01 <none> <none> 3）封锁k8s-node03这个node节点，排干该node节点上的pod资源 [root@k8s-master01 ~]# kubectl drain k8s-node03 --delete-local-data --force --ignore-daemonsets node/k8s-node03 cordoned WARNING: deleting Pods not managed by ReplicationController, ReplicaSet, Job, DaemonSet or StatefulSet: default/kevin-nginx; ignoring DaemonSet-managed Pods: default/dnsutils-ds-h546r, default/nginx-ds-6kfsw, kube-system/node-exporter-zmb68 evicting pod "metrics-server-54997795d9-rczmc" evicting pod