kubectl命令

1、查看节点

[root@master69 kubernetes]# kubectl get nodes -o wide
NAME             STATUS   ROLES    AGE     VERSION   INTERNAL-IP    EXTERNAL-IP   OS-IMAGE                KERNEL-VERSION               CONTAINER-RUNTIME
master69         Ready    master   3d14h   v1.18.5   172.28.18.69   <none>        CentOS Linux 7 (Core)   3.10.0-1062.9.1.el7.x86_64   docker://19.3.5
redis-01.hlqxt   Ready    <none>   39h     v1.18.5   172.28.5.120   <none>        CentOS Linux 7 (Core)   3.10.0-862.el7.x86_64        docker://19.3.12
redis-02.hlqxt   Ready    <none>   39h     v1.18.5   172.28.5.124   <none>        CentOS Linux 7 (Core)   3.10.0-862.el7.x86_64        docker://19.3.12
redis-03.hlqxt   Ready    <none>   38h     v1.18.5   172.28.5.125   <none>        CentOS Linux 7 (Core)   3.10.0-957.el7.x86_64        docker://19.3.12

2、查看某个pod

[root@master69 kubernetes]# kubectl get pod nginx-demo-deployment-59fbc48594-4nsx8 -o wide
NAME                                     READY   STATUS    RESTARTS   AGE   IP             NODE             NOMINATED NODE   READINESS GATES
nginx-demo-deployment-59fbc48594-4nsx8   1/1     Running   0          38h   10.244.8.165   redis-02.hlqxt   <none>           <none>

3、查看某个pod详细信息

[root@master69 kubernetes]# kubectl describe pod nginx-demo-deployment-59fbc48594-4nsx8

 4、查看deployment

[root@master69 kubernetes]# kubectl get deployment
NAME                    READY   UP-TO-DATE   AVAILABLE   AGE
nginx-demo-deployment   3/3     3            3           39h

5、查看详细deployment

[root@master69 kubernetes]# kubectl describe deployment nginx-demo-deployment

6、查看service

[root@master69 kubernetes]# kubectl get svc -o wide
NAME                 TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)        AGE     SELECTOR
kubernetes           ClusterIP   10.96.0.1        <none>        443/TCP        3d15h   <none>
nginx-demo-service   NodePort    10.100.213.139   <none>        81:30001/TCP   16m     app=nginx-k8s-demo

7、查看某个service详细信息

[root@master69 kubernetes]# kubectl describe svc nginx-demo-service
Name:                     nginx-demo-service
Namespace:                default
Labels:                   <none>
Annotations:              <none>
Selector:                 app=nginx-k8s-demo
Type:                     NodePort
IP:                       10.100.213.139
Port:                     http  81/TCP
TargetPort:               80/TCP
NodePort:                 http  30001/TCP
Endpoints:                10.244.7.202:80,10.244.8.165:80,10.244.9.79:80
Session Affinity:         None
External Traffic Policy:  Cluster
Events:                   <none>