5、创建frontend pod
这是一个简单的PHP 服务，用来和master service（写请求）或slave service（读请求）交互
[root@centos1 example]# kubectl create -f frontend-controller.json
replicationcontrollers/frontend
[root@centos1 example]# kubectl get rc
CONTROLLER CONTAINER(S) IMAGE(S) SELECTOR REPLICAS
frontend php-redis kubernetes/example-guestbook-php-redis:v2 name=frontend 3
redis-master master redis name=redis-master 1
redis-slave slave kubernetes/redis-slave:v2 name=redis-slave 2
运行成功后，查看当前pod运行状态
[root@centos1 example]# kubectl get pods
POD IP CONTAINER(S) IMAGE(S) HOST LABELS STATUS CREATED MESSAGE
frontend-fr5z1 172.17.0.13 centos2/192.168.1.112 name=frontend Running 2 minutes
php-redis kubernetes/example-guestbook-php-redis:v2 Running 2 minutes
frontend-gjx3t 172.17.0.14 centos2/192.168.1.112 name=frontend Running 2 minutes
php-redis kubernetes/example-guestbook-php-redis:v2 Running 2 minutes
frontend-v608r 172.17.0.12 centos2/192.168.1.112 name=frontend Running 2 minutes
php-redis kubernetes/example-guestbook-php-redis:v2 Running 2 minutes
redis-master-svar7 172.17.0.9 centos2/192.168.1.112 name=redis-master Running 53 minutes
master redis Running 53 minutes
redis-slave-31tkb 172.17.0.10 centos2/192.168.1.112 name=redis-slave Running 12 minutes
slave kubernetes/redis-slave:v2 Running 12 minutes
redis-slave-uk8nu 172.17.0.11 centos2/192.168.1.112 name=redis-slave Running 12 minutes
slave kubernetes/redis-slave:v2 Running 12 minutes
可以看到一个redis master，两个redis slave和三个frontend pods
6、创建guestbook service
和其他service一样，你可以创建一个service管理frontend pods
[root@centos1 example]# kubectl create -f frontend-service.json
services/frontend
[root@centos1 example]# kubectl get services
NAME LABELS SELECTOR IP(S) PORT(S)
frontend name=frontend name=frontend 10.254.154.111 80/TCP
redis-master name=redis-master name=redis-master 10.254.154.90 6379/TCP
