Kubernetes留言板

1.下载镜像

docker pull docker.io/kubeguide/guestbook-php-frontend 
docker pull docker.io/kubeguide/redis-master 
docker pull docker.io/kubeguide/guestbook-redis-slave

2.修改配置文件

/etc/kubernetes/apiserver中删除ServiceAccount   
KUBE_ADMISSION_CONTROL="--admission-control=NamespaceLifecycle,NamespaceExists,LimitRanger,ServiceAccount,SecurityContextDeny,ResourceQuota"
修改vi /etc/sysconfig/docker中修改OPTIONS选项
OPTIONS='--selinux-enabled=false --insecure-registry gcr.io'

3.创建redis-master Pod和服务

kubectl create -f redis-master-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: docker.io/kubeguide/redis-master 
        ports: 
        - containerPort: 6379

kubectl create -f redis-master-service.yaml 

apiVersion: v1 
kind: Service 
metadata: 
  name: redis-master 
  labels: 
    name: redis-master 
spec: 
  ports: 
  - port: 6379 
    targetPort: 6379 
  selector: 
    name: redis-master

4.创建redis-slave Pod和服务

kubectl create -f redis-slave-rc.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: docker.io/kubeguide/guestbook-redis-slave
        env:
        - name: GET_HOSTS_FROM
          value: env
        ports: 
        - containerPort: 6379

kubectl create -f redis-slave-service.yaml

apiVersion: v1 
kind: Service 
metadata: 
  name: redis-slave 
  labels: 
    name: redis-slave
spec: 
  ports: 
  - port: 6379 
  selector: 
    name: redis-slave

5.创建frontend Pod和服务

kubectl create -f 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: docker.io/kubeguide/guestbook-php-frontend
        env:
        - name: GET_HOSTS_FROM
          value: env
        ports: 
        - containerPort: 6379

kubectl create -f frontend-service.yaml

apiVersion: v1 
kind: Service 
metadata: 
  name: frontend 
  labels: 
    name: frontend
spec: 
  type: NodePort
  ports: 
  - port: 80
    nodePort: 30001
  selector: 
    name: frontend

6.查看pods，svc，rc

kubectl get rc
CONTROLLER     CONTAINER(S)   IMAGE(S)                                     SELECTOR            REPLICAS   AGE
frontend       frontend       docker.io/kubeguide/guestbook-php-frontend   name=frontend       3          2h
redis-master   master         docker.io/kubeguide/redis-master             name=redis-master   1          6h
redis-slave    slave          docker.io/kubeguide/guestbook-redis-slave    name=redis-slave    2          6h

kubectl get svc
NAME           LABELS                                    SELECTOR            IP(S)            PORT(S)    AGE
frontend       name=frontend                             name=frontend       10.254.71.174    80/TCP     2h
kubernetes     component=apiserver,provider=kubernetes   <none>              10.254.0.1       443/TCP    4d
redis-master   name=redis-master                         name=redis-master   10.254.164.159   6379/TCP   3h
redis-slave    name=redis-slave                          name=redis-slave    10.254.165.215   6379/TCP   3h

kubectl get pods
NAME                 READY     STATUS    RESTARTS   AGE
frontend-48fgc       1/1       Running   1          -24730s
frontend-lhcbc       1/1       Running   0          -24730s
frontend-vkex0       1/1       Running   0          -24730s
redis-master-dr1nc   1/1       Running   1          -21280s
redis-slave-d5z5j    1/1       Running   1          -21280s
redis-slave-we0qp    1/1       Running   0          -21280s

7.访问http://192.168.42.128:30001/