kubernetes release service Demo

kubernetes publishing service

Create a pod in the Kubernetes cluster and verify that it is running normally:

# 拉取nginx 的pod
[root@zjj101 ~]# kubectl create deployment nginx --image=nginx
deployment.apps/nginx created
# 查看pod ,发现了一个nginx,等status状态变成running状态后就可以了
[root@zjj101 ~]#  kubectl get pod
NAME                    READY   STATUS    RESTARTS   AGE
nginx-f89759699-rh5lk   1/1     Running   0          2m19s

The external port is exposed. If you do not expose it, the external network cannot be accessed. The default port of nginx is 80

命令: kubectl expose deployment nginx --port=80 --type=NodePort

[root@zjj101 ~]# kubectl expose deployment nginx --port=80 --type=NodePort 
service/nginx exposed

View external ports: kubectl get pod,svc

[root@zjj101 ~]# kubectl get pod,svc
NAME                        READY   STATUS    RESTARTS   AGE
pod/nginx-f89759699-rh5lk   1/1     Running   0          5m10s

NAME                 TYPE        CLUSTER-IP    EXTERNAL-IP   PORT(S)        AGE
service/kubernetes   ClusterIP   10.96.0.1     <none>        443/TCP        15m
service/nginx        NodePort    10.98.67.59   <none>        80:31715/TCP   46s

It is found that the port exposed by nginx is 31715

Open the browser and test it

zjj101 zjj102 zjj103 I did host mapping on the windows machine.In fact, zjj101 is the master machine, zjj102 is the node1 machine, and zjj103 is the node2 machine.

http://zjj101:31715/

http://zjj102:31715/

http://zjj103:31715/