一、创建实验文件
[root@k8s-master ~]# cat myweb-rc.yml
apiVersion: v1
kind: ReplicationController
metadata:
name: myweb
spec:
replicas: 3
selector:
app: myweb
template:
metadata:
labels:
app: myweb
spec:
containers:
- name: nginx
image: 10.0.128.0:5000/nginx:latest
ports:
- containerPort: 80
二、故障自愈实战
1、创建前pod状态查看
[root@k8s-master ~]# kubectl get pod -o wide
NAME READY STATUS RESTARTS AGE IP NODE
nginx 1/1 Running 0 1h 172.16.10.2 k8s-node1
nginx2 1/1 Running 0 19m 172.16.48.2 k8s-node2
2、创建rc并查看状态
[root@k8s-master ~]# kubectl create -f myweb-rc.yml
replicationcontroller "myweb" created
[root@k8s-master ~]# kubectl get pod -o wide
NAME READY STATUS RESTARTS AGE IP NODE
myweb-9rmf4 1/1 Running 0 30s 172.16.10.3 k8s-node1
myweb-stgrj 1/1 Running 0 30s 172.16.48.4 k8s-node2
myweb-vhnph 1/1 Running 0 30s 172.16.48.3 k8s-node2
nginx 1/1 Running 0 1h 172.16.10.2 k8s-node1
nginx2 1/1 Running 0 19m 172.16.48.2 k8s-node2
3、故障自愈（多次删除自动新启动容器）
[root@k8s-master ~]# kubectl delete pods myweb-9rmf4
pod "myweb-9rmf4" deleted
[root@k8s-master ~]# kubectl get pod -o wide
NAME READY STATUS RESTARTS AGE IP NODE
myweb-0b1wf 0/1 ContainerCreating 0 3s <none> k8s-node1
myweb-stgrj 1/1 Running 0 1m 172.16.48.4 k8s-node2
myweb-vhnph 1/1 Running 0 1m 172.16.48.3 k8s-node2
nginx 1/1 Running 0 1h 172.16.10.2 k8s-node1
nginx2 1/1 Running 0 20m 172.16.48.2 k8s-node2
[root@k8s-master ~]# kubectl delete pods myweb-stgrj
pod "myweb-stgrj" deleted
[root@k8s-master ~]# kubectl get pod
NAME READY STATUS RESTARTS AGE
myweb-0b1wf 1/1 Running 0 53s
myweb-nwzfp 1/1 Running 0 6s
myweb-vhnph 1/1 Running 0 2m
nginx 1/1 Running 0 1h
nginx2 1/1 Running 0 21m