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# 设置为一定不能被调度

[root@k8s-master01 ~]# kubectl taint node k8s-master01 node-role.kubernetes.io/master="":NoSchedule
node/k8s-master01 tainted
[root@k8s-master01 ~]# kubectl taint node k8s-master02 node-role.kubernetes.io/master="":NoSchedule
node/k8s-master02 tainted
[root@k8s-master01 ~]# kubectl taint node k8s-master03 node-role.kubernetes.io/master="":NoSchedule
node/k8s-master03 tainted
[root@k8s-master01 ~]#
# 查看污点
[root@k8s-master01 ~]# kubectl  describe  node | grep Ta
Taints:             node-role.kubernetes.io/master:NoSchedule
Taints:             node-role.kubernetes.io/master:NoSchedule
Taints:             node-role.kubernetes.io/master:NoSchedule
Taints:             <none>
Taints:             <none>
Taints:             <none>
Taints:             <none>
Taints:             <none>
[root@k8s-master01 ~]#

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# 设置为不仅不会调度, 还会驱逐Node上已有的Pod
[root@k8s-master01 ~]# kubectl taint node k8s-master03 node-role.kubernetes.io/master="":NoExecute
node/k8s-master03 tainted
[root@k8s-master01 ~]# kubectl taint node k8s-master02 node-role.kubernetes.io/master="":NoExecute
node/k8s-master02 tainted
[root@k8s-master01 ~]# kubectl taint node k8s-master01 node-role.kubernetes.io/master="":NoExecute
node/k8s-master01 tainted

# 查看污点
[root@k8s-master01 ~]# kubectl  describe  node | grep Ta
Taints:             node-role.kubernetes.io/master:NoExecute
Taints:             node-role.kubernetes.io/master:NoExecute
Taints:             node-role.kubernetes.io/master:NoExecute
Taints:             <none>
Taints:             <none>
Taints:             <none>
Taints:             <none>
Taints:             <none>
[root@k8s-master01 ~]#