k8s标签label

1、给节点设置标签 一遍pod部署选择

kubectl label node 节点名 disktype=ssd

kubectl label node master1 disktype=ssd

效果
[root@master1 ~]# kubectl get nodes --show-labels
NAME      STATUS   ROLES                  AGE     VERSION   LABELS
master1   Ready    control-plane,master   2d14h   v1.20.4   beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,disktype=ssd,kubernetes.io/arch=amd64,kubernetes.io/hostname=master1,kubernetes.io/os=linux,node-role.kubernetes.io/control-plane=,node-role.kubernetes.io/master=
node1     Ready    <none>                 2d14h   v1.20.4   beta.kubernetes.io/arch=amd64,beta.kubernetes.io/os=linux,kubernetes.io/arch=amd64,kubernetes.io/hostname=node1,kubernetes.io/os=linux

2、给service设置标签 可以设置多次 通过 key=value的方式 但key不能一样   

kubectl label services http-svc http=v1

效果

[root@master1 ~]# kubectl get services  --show-labels
NAME         TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)          AGE     LABELS
http-svc     NodePort    172.30.169.160   <none>        8080:30001/TCP   38h     http=v1
kubernetes   ClusterIP   172.30.0.1       <none>        443/TCP          2d14h   component=apiserver,provider=kubernetes
nginx        ClusterIP   None             <none>        80/TCP           14h     app=nginx
[root@master1 ~]#

3、覆盖修改可以用  --overwrite参数

kubectl label services http-svc http=v2 --overwrite