kubernetes（k8s）第五部分之K8s部署nginx

【1】创建nginx-rc.yaml文件

[root@k8s-master ~]# cat nginx-rc.yaml
apiVersion: v1
kind: ReplicationController
metadata:name: nginx-controller
spec:replicas: 2selector:name: nginxtemplate:metadata:labels:name: nginxspec:containers:- name: nginximage: registry:5000/nginximagePullPolicy: Neverports:- containerPort: 80

【2】创建nginx-service.yaml文件

[root@k8s-master ~]# cat nginx-service.yaml
apiVersion: v1
kind: Service
metadata:name: nginx-service-nodeport
spec:ports:- port: 8000targetPort: 80protocol: TCPtype: NodePortselector:
name: nginx

【3】创建pod和service

注：所有节点都要有registry:5000/nginx镜像

[root@k8s-master ~]# kubectl create -f nginx-rc.yaml

[root@k8s-master ~]# kubectl create -f nginx-service.yaml

【4】查看pod

[root@k8s-master ~]# kubectl get po

[root@k8s-master ~]# kubectl get po
NAME                     READY     STATUS    RESTARTS   AGE
nginx-controller-pbkm6   1/1       Running   0          56s
nginx-controller-zcvdk   1/1       Running   0          56s

【5】查看service

[root@k8s-master ~]# kubectl get svc
NAME                     CLUSTER-IP       EXTERNAL-IP   PORT(S)          AGE
kubernetes               10.254.0.1       <none>        443/TCP          1h
nginx-service-nodeport   10.254.224.123   <nodes>       8000:30473/TCP   1m

【6】查看service详细信息

[root@k8s-master ~]# kubectl describe svc nginx-service-nodeport
Name:           nginx-service-nodeport
Namespace:      default
Labels:         <none>
Selector:       name=nginx
Type:           NodePort
IP:         10.254.224.123
Port:           <unset>   8000/TCP
NodePort:       <unset>   30473/TCP
Endpoints:      10.0.25.2:80,10.0.56.2:80
Session Affinity:   None
No events.

【7】从上面的描述可以看出在node节点访问30473即可访问nginx

[root@k8s-node1 ~]# curl 172.25.37.12:30473
<!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>
[root@k8s-node2 ~]# curl 172.25.37.13:30473
<!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>

[root@k8s-master ~]# kubectl delete ReplicationController nginx-controller

详细内容可以参考：https://blog.csdn.net/xinghun_4/article/details/50492041

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