k8snamespace（名称空间）操作

查询namespace

命令kubectl get ns或者kubectl get namespaces
案例&＃xff1a;

[root&＃64;123 ~]# kubectl get namespaces
NAME STATUS AGE
default Active 3h40m
kube-node-lease Active 3h40m
kube-public Active 3h40m
kube-system Active 3h40m


创建namespace

命令&＃xff1a; kubectl create -f $namespace.yaml 或 kubectl create namespace $namespace
yaml文件:

[root&＃64;123 ~]# cat test-namespace.yaml
apiVersion: v1
kind: Namespace
metadata:name: test-ns


创建案例&＃xff1a;

#使用yaml创建名称空间
[root&＃64;123 ~]# kubectl create -f test-namespace.yaml
test-ns created
[root&＃64;123 ~]# kubectl get ns
NAME STATUS AGE
default Active 3h45m
kube-node-lease Active 3h45m
kube-public Active 3h45m
kube-system Active 3h45m
test-ns Active 18s# 使用命令创建名称空间
[root&＃64;123 ~]# kubectl create namespace custom-namespace
custom-namespace created
[root&＃64;123 ~]# kubectl get ns
NAME STATUS AGE
custom-namespace Active 11s
default Active 3h49m
kube-node-lease Active 3h49m
kube-public Active 3h49m
kube-system Active 3h49m
test-ns Active 4m1s
[root&＃64;123 ~]# kubectl describe ns custom-namespace
Name: custom-namespace
Labels: kubernetes.io/metadata.name&＃61;custom-namespace
Annotations:
Status: Active
No resource quota.
No LimitRange resource.


注意&＃xff1a;命名空间名称不允许包含点&＃xff08;.&＃xff09;

删除namespace

命令&＃xff1a;kubectl delete ns $namespace
案例&＃xff1a;

[root&＃64;123 ~]# kubectl get ns
NAME STATUS AGE
custom-namespace Active 11s
default Active 3h49m
kube-node-lease Active 3h49m
kube-public Active 3h49m
kube-system Active 3h49m
test-ns Active 4m1s[root&＃64;123 ~]# kubectl delete ns custom-namespacenamespace"custom-namespace" deleted[root&＃64;123 ~]# kubectl get ns
NAME STATUS AGE
default Active 3h55m
kube-node-lease Active 3h55m
kube-public Active 3h55m
kube-system Active 3h55m
test-ns Active 10m


注意&＃xff1a;因为pod等资源是在namespace下创建的&＃xff0c;如果namespace删除&＃xff0c;那么其中的pod、service等资源也将被同时清除&＃xff0c;删除时要慎重