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:
selector:
name: redis-master
template:
metadata:
labels:
name: redis-master
spec:
containers:
- name: master
image: redis
ports:
- containerPort:
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:
targetPort:
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:
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:
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:
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:
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:
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:
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
