一、创建对象

如下，创建dev命令空间

[root@master object_manage]# kubectl create namespace dev
namespace/dev created
[root@master object_manage]#

如下命令为创建一个deployment

[root@master object_manage]# kubectl create deployment nginx --image nginx -n dev
deployment.apps/nginx created
[root@master object_manage]#

二、查看对象

如下，查看dev命名空间中的pod

[root@master object_manage]# kubectl get pod -n dev
NAME                     READY   STATUS    RESTARTS   AGE
nginx-6799fc88d8-phb2b   1/1     Running   0          2m16s
[root@master object_manage]#

如下，查看dev命名空间中的deployment

[root@master object_manage]# kubectl get deployment -n dev
NAME    READY   UP-TO-DATE   AVAILABLE   AGE
nginx   1/1     1            1           2m55s
[root@master object_manage]#

如下，为同时查看dev命名空间中的deployment和pod

[root@master object_manage]# kubectl get deploy,pod -n dev
NAME                    READY   UP-TO-DATE   AVAILABLE   AGE
deployment.apps/nginx   1/1     1            1           3m31s

NAME                         READY   STATUS    RESTARTS   AGE
pod/nginx-6799fc88d8-phb2b   1/1     Running   0          3m31s
[root@master object_manage]#

三、更新对象

如下为更新deployment中的pod副本数量，由原来的1修改为3

[root@master object_manage]# kubectl scale deployment nginx -n dev --replicas 3
deployment.apps/nginx scaled
[root@master object_manage]#

此时继续查看dev命名空间下的deployment和pod，pod数量已更新为三个了

[root@master object_manage]# kubectl get deploy,pod -n dev
NAME                    READY   UP-TO-DATE   AVAILABLE   AGE
deployment.apps/nginx   3/3     3            3           5m40s

NAME                         READY   STATUS    RESTARTS   AGE
pod/nginx-6799fc88d8-6xfbz   1/1     Running   0          18s
pod/nginx-6799fc88d8-phb2b   1/1     Running   0          5m40s
pod/nginx-6799fc88d8-sp9q8   1/1     Running   0          18s
[root@master object_manage]#

四、删除对象

如下为删除dev命名空间中的deployment

[root@master object_manage]# kubectl delete deployment nginx -n dev
deployment.apps "nginx" deleted
[root@master object_manage]#

此时查询dev命名空间的deployment和pod，发现都已经被删除了

[root@master object_manage]# kubectl get deploy,pod -n dev
No resources found in dev namespace.
[root@master object_manage]#

如下为删除dev命名空间

[root@master object_manage]# kubectl delete namespace dev
namespace "dev" deleted
[root@master object_manage]#