一、kubectl run命令拓展
1、RC创建
[root@k8s-master ~]# kubectl run web --generator=run/v1 --image=10.0.128.0:5000/nginx:1.13 --replicas=3 replicationcontroller "web" created
2、deployment创建
[root@k8s-master ~]# kubectl run web --image=10.0.128.0:5000/nginx:1.13 --replicas=3 deployment "web" created
不指定默认创建deployment
3、删除RC
[root@k8s-master ~]# kubectl delete deployment web deployment "web" deleted
二、deployment通过标签管理pod
1、为什么nginx-deployment里一个pod都没有？
[root@k8s-master ~]# kubectl describe svc nginx Name: nginx Namespace: default Labels: <none> Selector: app=myweb Type: NodePort IP: 10.254.145.15 Port: <unset> 80/TCP NodePort: <unset> 30027/TCP Endpoints: <none> Session Affinity: None No events.
因为POD标签不一致
2、修改pod标签为nginx
[root@k8s-master ~]# kubectl describe po/nginx-deployment-3113009173-4xrq4 Name: nginx-deployment-3113009173-4xrq4 Namespace: default Node: k8s-node2/8.8.8.8 Start Time: Mon, 21 Jan 2019 19:52:06 +0800 Labels: app=nginx pod-template-hash=3113009173 Status: Running IP: 172.16.19.2 Controllers: ReplicaSet/nginx-deployment-3113009173 [root@k8s-master ~]# kubectl edit svc nginx 修改app: nginx service "nginx" edited [root@k8s-master ~]# kubectl describe svc nginx Name: nginx Namespace: default Labels: <none> Selector: app=nginx Type: NodePort IP: 10.254.145.15 Port: <unset> 80/TCP NodePort: <unset> 30027/TCP Endpoints: 172.16.19.2:80,172.16.19.3:80,172.16.50.2:80 Session Affinity: None No events.
deployment通过标签管理pod，如果把标签删了就没人管了
三、更改集群端口
1、更改svc文件
[root@k8s-master ~]# kubectl edit svc nginx - nodePort: 32000 service "nginx" edited
2、查询
[root@k8s-master ~]# kubectl get all NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE deploy/nginx-deployment 1 1 1 1 13h NAME CLUSTER-IP EXTERNAL-IP PORT(S) AGE svc/kubernetes 10.254.0.1 <none> 443/TCP 2d svc/nginx 10.254.145.15 <nodes> 80:32000/TCP 1d NAME DESIRED CURRENT READY AGE rs/nginx-deployment-2950479891 0 0 0 13h rs/nginx-deployment-3113009173 1 1 1 13h NAME READY STATUS RESTARTS AGE po/nginx-deployment-3113009173-vckhg 1/1 Running 1 13h
3、测试截图
