设置k8s中节点node的ROLES值

1.查看集群

[root@k8s-master ~]# kubectl get nodes
NAME         STATUS   ROLES                  AGE   VERSION
k8s-master   Ready    control-plane,master   54d   v1.23.8
k8s-node1    Ready    <none>                 54d   v1.23.8
k8s-node2    Ready    <none>                 54d   v1.23.8

2. 给node节点修改roles

其实这个Roles就是一个标签,执行以下命令给node1 和 node2 打上worker标签
k8s-node1 打上标签为worker1
k8s-node2 打上标签为worker2

kubectl label node k8s-node1 kubernetes.io/role=worker1
kubectl label node k8s-node2 kubernetes.io/role=worker2

[root@k8s-master ~]# kubectl label node k8s-node2 kubernetes.io/role=worker2
node/k8s-node2 labeled
[root@k8s-master ~]# kubectl label node k8s-node1 kubernetes.io/role=worker1
node/k8s-node1 labeled
[root@k8s-master ~]# kubectl get nodes
NAME         STATUS   ROLES                  AGE   VERSION
k8s-master   Ready    control-plane,master   54d   v1.23.8
k8s-node1    Ready    worker1                54d   v1.23.8
k8s-node2    Ready    worker2                54d   v1.23.8
[root@k8s-master ~]# 

3.更换为其他的标签

kubectl label nodes k8s-node1  kubernetes.io/role=worker  --overwrite
kubectl label nodes k8s-node2  kubernetes.io/role=worker  --overwrite

[root@k8s-master ~]# kubectl label nodes k8s-node1  kubernetes.io/role=worker  --overwrite
node/k8s-node1 unlabeled
[root@k8s-master ~]# kubectl label nodes k8s-node2  kubernetes.io/role=worker  --overwrite
node/k8s-node2 unlabeled
[root@k8s-master ~]# kubectl get nodes
NAME         STATUS   ROLES                  AGE   VERSION
k8s-master   Ready    control-plane,master   54d   v1.23.8
k8s-node1    Ready    worker                 54d   v1.23.8
k8s-node2    Ready    worker                 54d   v1.23.8
[root@k8s-master ~]# 

4. 不想要标签想移除标签

kubectl label nodes k8s-node1 kubernetes.io/role-
kubectl label nodes k8s-node2 kubernetes.io/role-

[root@k8s-master ~]# kubectl get nodes
NAME         STATUS   ROLES                  AGE   VERSION
k8s-master   Ready    control-plane,master   54d   v1.23.8
k8s-node1    Ready    <none>                 54d   v1.23.8
k8s-node2    Ready    <none>                 54d   v1.23.8
[root@k8s-master ~]# 

大家对K8S的使用有啥问题，欢迎留言我给大家解答。