kubernetes容器集群管理启动一个测试示例
2024-10-07 16:52:13
创建nginx
创建3个nginx副本
[root@master bin]# kubectl run nginx --image=nginx --replicas=3
kubectl run --generator=deployment/apps.v1 is DEPRECATED and will be removed in a future version. Use kubectl run --generator=run-pod/v1 or kubectl create instead.
deployment.apps/nginx created
查看创建的容器
[root@master bin]# kubectl get pod
NAME READY STATUS RESTARTS AGE
nginx-7bb7cd8db5-4h2wn 0/1 ImagePullBackOff 0 67s
nginx-7bb7cd8db5-kgsxt 0/1 ContainerCreating 0 67s
nginx-7bb7cd8db5-tjw54 0/1 ImagePullBackOff 0 67s
查看所有资源对象
[root@master bin]# kubectl get pod
NAME READY STATUS RESTARTS AGE
nginx-7bb7cd8db5-4h2wn 0/1 ImagePullBackOff 0 67s
nginx-7bb7cd8db5-kgsxt 0/1 ContainerCreating 0 67s
nginx-7bb7cd8db5-tjw54 0/1 ImagePullBackOff 0 67s
[root@master bin]# kubectl get all
NAME READY STATUS RESTARTS AGE
pod/nginx-7bb7cd8db5-4h2wn 0/1 ImagePullBackOff 0 2m47s
pod/nginx-7bb7cd8db5-kgsxt 0/1 ImagePullBackOff 0 2m47s
pod/nginx-7bb7cd8db5-tjw54 0/1 ImagePullBackOff 0 2m47s
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/kubernetes ClusterIP 10.10.10.1 <none> 443/TCP 9d
NAME READY UP-TO-DATE AVAILABLE AGE
deployment.extensions/nginx 0/3 3 0 2m47s
NAME DESIRED CURRENT READY AGE
replicaset.extensions/nginx-7bb7cd8db5 3 3 0 2m47s
NAME READY UP-TO-DATE AVAILABLE AGE
deployment.apps/nginx 0/3 3 0 2m47s
NAME DESIRED CURRENT READY AGE
replicaset.apps/nginx-7bb7cd8db5 3 3 0 2m47s
[root@master bin]# kubectl get all
NAME READY STATUS RESTARTS AGE
pod/nginx-7bb7cd8db5-4h2wn 1/1 Running 0 11m
pod/nginx-7bb7cd8db5-kgsxt 1/1 Running 0 11m
pod/nginx-7bb7cd8db5-tjw54 1/1 Running 0 11m
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/kubernetes ClusterIP 10.10.10.1 <none> 443/TCP 9d
NAME READY UP-TO-DATE AVAILABLE AGE
deployment.extensions/nginx 3/3 3 3 11m
NAME DESIRED CURRENT READY AGE
replicaset.extensions/nginx-7bb7cd8db5 3 3 3 11m
NAME READY UP-TO-DATE AVAILABLE AGE
deployment.apps/nginx 3/3 3 3 11m
NAME DESIRED CURRENT READY AGE
replicaset.apps/nginx-7bb7cd8db5 3 3 3 11m
[root@master bin]# kubectl get pod
NAME READY STATUS RESTARTS AGE
nginx-7bb7cd8db5-4h2wn 1/1 Running 0 12m
nginx-7bb7cd8db5-kgsxt 1/1 Running 0 12m
nginx-7bb7cd8db5-tjw54 1/1 Running 0 12m
查看容器运行主机位置
[root@master bin]# kubectl get pod -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
nginx-7bb7cd8db5-4h2wn 1/1 Running 0 13m 172.17.54.2 192.168.238.128 <none> <none>
nginx-7bb7cd8db5-kgsxt 1/1 Running 0 13m 172.17.10.3 192.168.238.129 <none> <none>
nginx-7bb7cd8db5-tjw54 1/1 Running 0 13m 172.17.10.2 192.168.238.129 <none> <none>
发布服务
[root@master bin]# kubectl expose deployment nginx --port=88 --target-port=80 --type=NodePort
service/nginx exposed
[root@master bin]# kubectl get pod
NAME READY STATUS RESTARTS AGE
nginx-7bb7cd8db5-4h2wn 1/1 Running 0 17m
nginx-7bb7cd8db5-kgsxt 1/1 Running 0 17m
nginx-7bb7cd8db5-tjw54 1/1 Running 0 17m
[root@master bin]# kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 10.10.10.1 <none> 443/TCP 9d
nginx NodePort 10.10.10.40 <none> 88:30879/TCP 71s
node节点访问测试
[root@node01 ~]# curl 10.10.10.40:88
<!DOCTYPE html>
<html>
<head>
<title>Welcome to nginx!</title>
<style>
body {
width: 35em;
margin: 0 auto;
font-family: Tahoma, Verdana, Arial, sans-serif;
}
</style>
</head>
<body>
<h1>Welcome to nginx!</h1>
<p>If you see this page, the nginx web server is successfully installed and
working. Further configuration is required.</p>
<p>For online documentation and support please refer to
<a href="http://nginx.org/">nginx.org</a>.<br/>
Commercial support is available at
<a href="http://nginx.com/">nginx.com</a>.</p>
<p><em>Thank you for using nginx.</em></p>
</body>
</html>
浏览器访问测试
查看日志
[root@master bin]# kubectl get pod
NAME READY STATUS RESTARTS AGE
nginx-7bb7cd8db5-4h2wn 1/1 Running 0 22m
nginx-7bb7cd8db5-kgsxt 1/1 Running 0 22m
nginx-7bb7cd8db5-tjw54 1/1 Running 0 22m
[root@master bin]# kubectl logs nginx-7bb7cd8db5-4h2wn
172.17.10.0 - - [17/Jul/2019:00:25:12 +0000] "GET / HTTP/1.1" 200 612 "-" "curl/7.29.0" "-"
查看已经部署的容器
[root@master ~]# kubectl get deployment
NAME READY UP-TO-DATE AVAILABLE AGE
nginx 3/3 3 3 2d
删除部署的容器
[root@master ~]# kubectl delete deployment nginx
deployment.extensions "nginx" deleted
[root@master ~]# kubectl get deployment
No resources found.
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