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[CloudNative：KuberNetes&服務釋出.V03]                                                               [Applications.KuberNetes] [|DevOps|k8s|服務釋出|Label&Selector|]

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一、修改label

### --- label修改方式

~~~     第一種：刪除重建：如何刪除一個label
~~~     第二種：修改overwrite進行修改label

二、方式一：刪除label重建

### --- 刪除容器對應的label

[root@k8s-master01 ~]# kubectl label po busybox app- -n kube-public                 //app後加減號，就是刪除label
pod/busybox labeled
 

### --- 檢視對應容器刪除label後狀態
 
[root@k8s-master01 ~]# kubectl get po -A -l app=busybox
NAMESPACE   NAME      READY   STATUS    RESTARTS   AGE
default     busybox   1/1     Running   0          11m

### --- 重新為該pod新增新的label

[root@k8s-master01 ~]# kubectl label po busybox app=busybox -n kube-public          //重新給他加上label
pod/busybox labeled
 

### --- 檢視重新新增label後pod的狀態

[root@k8s-master01 ~]# kubectl get po -A -l app=busybox
NAMESPACE     NAME      READY   STATUS             RESTARTS   AGE
default       busybox   1/1     Running            0          12m
kube-public   busybox   0/1     CrashLoopBackOff   6          7m15s 

三、方法二：修改overwrite.label引數

### --- 通過overwrite來修改對應label引數

[root@k8s-master01 ~]# kubectl label po busybox app=busybox2 -n kube-public --overwrite
pod/busybox labeled

### --- 檢視對應pod的狀態和具有的label

[root@k8s-master01 ~]# kubectl get po -n kube-public --show-labels
NAME      READY   STATUS             RESTARTS   AGE     LABELS
busybox   0/1     CrashLoopBackOff   6          9m19s   app=busybox2,run=busybox    //可以看到它的標籤變為busybox2了。

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Walter Savage Landor:strove with none,for none was worth my strife.Nature I loved and, next to Nature, Art:I warm'd both hands before the fire of life.It sinks, and I am ready to depart                                                                                                                                                    ——W.S.Landor

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來自為知筆記(Wiz)