Kubernetes定义节点标签（ROLES）

1、查看集群节点信息

[root@k8s-master1 ~]# kubectl get nodes

2、定义标签

# 定义k8s-node1标签为worker1,定义k8s-node2标签为worker2,定义k8s-node3标签为worker3

[root@k8s-master1 ~]# kubectl label node k8s-node1 kubernetes.io/role=worker1

node/k8s-node1 labeled

[root@k8s-master1 ~]# kubectl label node k8s-node2 kubernetes.io/role=worker2

node/k8s-node2 labeled

[root@k8s-master1 ~]# kubectl label node k8s-node3 kubernetes.io/role=worker3

node/k8s-node3 labeled

# 定义k8s-master1、k8s-master2、k8s-master3标签为master

[root@k8s-master1 ~]# kubectl label node k8s-master1 kubernetes.io/role=master

node/k8s-master1 labeled

[root@k8s-master1 ~]# kubectl label node k8s-master2 kubernetes.io/role=master

node/k8s-master2 labeled

[root@k8s-master1 ~]# kubectl label node k8s-master3 kubernetes.io/role=master

node/k8s-master3 labeled

[root@k8s-master1 ~]# kubectl get nodes

3、更换标签

[root@k8s-master1 ~]# kubectl label nodes k8s-node1 kubernetes.io/role=worker --overwrite

node/k8s-node1 labeled

[root@k8s-master1 ~]# kubectl label nodes k8s-node2 kubernetes.io/role=worker --overwrite

node/k8s-node2 labeled

[root@k8s-master1 ~]# kubectl label nodes k8s-node3 kubernetes.io/role=worker --overwrite

node/k8s-node3 labeled

[root@k8s-master1 ~]# kubectl get nodes

4、移除标签

[root@k8s-master1 ~]# kubectl label nodes k8s-node1 kubernetes.io/role-

node/k8s-node1 unlabeled

[root@k8s-master1 ~]# kubectl label nodes k8s-node2 kubernetes.io/role-

node/k8s-node2 unlabeled

[root@k8s-master1 ~]# kubectl label nodes k8s-node3 kubernetes.io/role-

node/k8s-node3 unlabeled

[root@k8s-master1 ~]# kubectl get nodes