Guestbook Redis例子(Docker,Kubernetes)

来源：互联网发布：大圣归来披风进阶数据编辑：程序博客网时间：2024/04/20 04:12

效果展示：
这里写图片描述

(1)关闭CentoOS自带的防火墙服务：

systemctl stop iptables firewalldsystemctl disable iptables firewalld

(2)安装etcd,Kubernetes(略)
参考这里

(3)启动所有服务

master：systemctl start etcd kube-apiserver kube-controller-manager kube-schedulernode:systemctl start docker kubelet kube-proxy

(4)创建redis-master Pod和服务

[root@docker1 redis]# cat redis-master-rc.yaml apiVersion: v1kind: ReplicationControllermetadata:  name: redis-master  labels:    name: redis-masterspec:  replicas: 1  selector:    name: redis-master  template:    metadata:      labels:        name: redis-master    spec:      containers:      - name: master        image: kubeguide/redis-master        ports:        - containerPort: 6379

[root@docker1 redis]# cat redis-master-service.yaml apiVersion: v1kind: Servicemetadata:  name: redis-master  labels:    name: redis-masterspec:  selector:    name: redis-master  ports:  - port: 6379    targetPort: 6379

(5)创建redis-slave Pod和服务

[root@docker1 redis]# cat redis-slave-rc.yaml apiVersion: v1kind: ReplicationControllermetadata:  name: redis-slave  labels:    name: redis-slavespec:  replicas: 2  selector:    name: redis-slave  template:    metadata:      labels:        name: redis-slave    spec:      containers:      - name: slave        image: kubeguide/guestbook-redis-slave        ports:        - containerPort: 6379        env:        - name: GET_HOSTS_FROM          value: env

[root@docker1 redis]# cat redis-slave-service.yaml apiVersion: v1kind: Servicemetadata:  name: redis-slave  labels:    name: redis-slavespec:  selector:    name: redis-slave  ports:  - port: 6379

(6)创建frontend Pod和服务

[root@docker1 redis]# cat frontend-rc.yaml apiVersion: v1kind: ReplicationControllermetadata:  name: frontend  labels:    name: frontendspec:  replicas: 3  selector:    name: frontend  template:    metadata:      labels:        name: frontend    spec:      containers:      - name: frontend        image: kubeguide/guestbook-php-frontend        env:        - name: GET_HOSTS_FROM          value: env        ports:        - containerPort: 80

[root@docker1 redis]# cat frontend-service.yaml apiVersion: v1kind: Servicemetadata:  name: frontend  labels:    name: frontendspec:  selector:    name: frontend  type: NodePort  ports:  - port: 80    nodePort: 30001

(7)创建所有Pod和服务

[root@docker1 redis]# kubectl create -f ./[root@docker1 redis]# kubectl get podsNAME                 READY     STATUS    RESTARTS   AGEfrontend-5dznv       1/1       Running   0          31sfrontend-bbgw0       1/1       Running   0          31sfrontend-tkzq1       1/1       Running   0          31sredis-master-d3jdn   1/1       Running   0          31sredis-slave-uxnm6    1/1       Running   0          31sredis-slave-z9ql6    1/1       Running   0          31s

(8)检查服务运行效果
修改网页，显示主机名

[root@docker2 test]# cat index.php <html ng-app="redis">  <head>    <title>Guestbook</title>    <link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">    <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.12/angular.min.js"></script>    <script src="controllers.js"></script>    <script src="https://cdnjs.cloudflare.com/ajax/libs/angular-ui-bootstrap/0.13.0/ui-bootstrap-tpls.js"></script>  </head>  <body ng-controller="RedisCtrl">    <div style="width: 50%; margin-left: 20px">      <h2>Guestbook</h2><?phpecho 'pod name ='.getenv("HOSTNAME");?>    <form>    <fieldset>    <input ng-model="msg" placeholder="Messages" class="form-control" type="text" name="input"><br>    <button type="button" class="btn btn-primary" ng-click="controller.onRedis()">Submit</button>    </fieldset>    </form>    <div>      <div ng-repeat="msg in messages track by $index">        {{msg}}      </div>    </div>    </div>  </body></html>

每个Node上把index.php拷贝到容器[guestbook-php-frontend]

[root@docker2 test]# docker cp index.php d98a29423995:/var/www/html/

浏览网页效果
这里写图片描述

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