k8s google sample - guestbook
2015-12-17 19:37 DoPeter 阅读(1440) 评论(0) 编辑 收藏 举报Redis读写分离作为存储
PHP网页作为前端
github地址
https://github.com/kubernetes/kubernetes/blob/release-1.1/examples/guestbook/README.md
Create guest book sample on k8s
1. 创建Redis写端RC yaml
apiVersion: v1 kind: ReplicationController metadata: name: redis-master labels: name: redis-master spec: replicas: 1 selector: name: redis-master template: metadata: labels: name: redis-master spec: containers: - name: master image: redis ports: - containerPort: 6379
可以到开头的github地址下载dockfile,自己创建image
2. k8s创建RC redis master
kubectl create -f redis-master-controller.yaml
3. k8s创建 redis master service yaml
apiVersion: v1 kind: Service metadata: name: redis-master labels: name: redis-master spec: ports: # the port that this service should serve on - port: 6379 targetPort: 6379 selector: name: redis-master
4. k8s创建SVC
kubectl create -f redis-master-service.yaml
5. 创建Redis读端 RC redis slave yaml
apiVersion: v1 kind: ReplicationController metadata: name: redis-slave labels: name: redis-slave spec: replicas: 2 selector: name: redis-slave template: metadata: labels: name: redis-slave spec: containers: - name: slave image: kubeguide/guestbook-redis-slave env: - name: GET_HOSTS_FROM value: env # If your cluster config does not include a dns service, then to # instead access an environment variable to find the master # service's host, comment out the 'value: dns' line above, and # uncomment the line below. #value: env ports: - containerPort: 6379
示例文档中说明如果放在云端并且有DNS服务器可以写入dns,但是实验中是在局域网内,所以使用env
6. k8s创建redis slave RC
kubectl create -f redis-slave-controller.yaml
7. 创建redis slave svc yaml
apiVersion: v1 kind: Service metadata: name: redis-slave labels: name: redis-slave spec: ports: # the port that this service should serve on - port: 6379 selector: name: redis-slave
8. k8s创建redis slave svc
kubectl create -f redis-slave-service.yaml
9. 创建php frontend rc yaml
apiVersion: v1 kind: ReplicationController metadata: name: frontend labels: name: frontend spec: replicas: 3 selector: name: frontend template: metadata: labels: name: frontend spec: containers: - name: frontend image: peter/php-frontend:v1 env: - name: GET_HOSTS_FROM value: env # If your cluster config does not include a dns service, then to # instead access environment variables to find service host # info, comment out the 'value: dns' line above, and uncomment the # line below. # value: env ports: - containerPort: 80
这是下载了github的dockfile,本地构建的镜像
10. k8s创建 php frontend rc
kubectl create -f frontend-controller.yaml
11. 创建php frontend svc yaml
apiVersion: v1 kind: Service metadata: name: frontend labels: name: frontend spec: # if your cluster supports it, uncomment the following to automatically create # an external load-balanced IP for the frontend service. type: NodePort ports: # the port that this service should serve on - port: 80 nodePort: 30001 selector: name: frontend
打开节点机器30001端口
12. k8s创建php frontend svc
kubectl create -f frontend-service.yaml
查看k8s的pods svc rc
输入node机器的ip:30001即可访问
Scale
k8s执行命令
kubectl scale --current-replicas=2 --replicas=3 replicationcontrollers redis-slave
Rolling update
k8s执行命令
kubectl rolling-update frontend --image=peter/php-frontend:v3