获取名称空间

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root@k8s-master01:~# kubectl get ns
NAME              STATUS   AGE
default           Active   24h
kube-node-lease   Active   24h
kube-public       Active   24h
kube-system       Active   24h
longhorn-system   Active   8h

查看名称空间的资源清单

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root@k8s-master01:~# kubectl get ns default -o yaml
apiVersion: v1
kind: Namespace
metadata:
  creationTimestamp: "2021-06-28T10:53:44Z"
  labels:
    kubernetes.io/metadata.name: default
  name: default
  resourceVersion: "209"
  uid: 2bef0068-5658-4f23-a2a2-c3f712cdaa7b
spec:
  finalizers:
  - kubernetes
status:
  phase: Active

创建名称空间

使用资源清单创建名称空间

1.创建资源清单

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apiVersion: v1
kind: Namespace
metadata:
  name: dev

2.应用资源清单

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root@k8s-master01:~/yaml/chapter01# kubectl apply -f namespace.yaml
namespace/dev created
root@k8s-master01:~/yaml/chapter01# kubectl get ns
NAME              STATUS   AGE
default           Active   24h
dev               Active   4s			# dev名称空间已经创建
kube-node-lease   Active   24h
kube-public       Active   24h
kube-system       Active   24h
longhorn-system   Active   9h

命令创建名称空间

使用命令创建出namespace。

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root@k8s-master01:~/yaml/chapter01# kubectl create ns test
namespace/test created

root@k8s-master01:~/yaml/chapter01# kubectl get ns
NAME              STATUS   AGE
default           Active   24h
dev               Active   76s
kube-node-lease   Active   24h
kube-public       Active   24h
kube-system       Active   24h
longhorn-system   Active   9h
test              Active   4s