Way 2 - HttpGet Probe

HttpGet探测示例：

[root@master manifests]# vim liveness-httpget.yaml
apiVersion: v1
kind: Pod
metadata:
name: liveness-httpget-pod
namespace: default
spec:
containers:
- name: liveness-httpget-container
image: ikubernetes/myapp:v1
imagePullPolicy: IfNotPresent
ports:
- name: http
containerPort: 80
livenessProbe:
httpGet:
port: http
path: /index.html

Pod状态查看：

[root@master manifests]# kubectl create -f liveness-httpget.yaml
pod/liveness-httpget-pod created

[root@master manifests]# kubectl get pods
NAME READY STATUS RESTARTS AGE
client-f5cdb799f-pklmc 1/1 Running 0 26h
liveness-exec-pod 1/1 Running 8 20m
liveness-httpget-pod 1/1 Running 0 8s
myapp-9b4987d5-47sjj 1/1 Running 0 25h
myapp-9b4987d5-684q9 1/1 Running 0 25h
myapp-9b4987d5-djdr9 1/1 Running 1 25h
nginx-deploy-84cbfc56b6-tcssz 1/1 Running 0 29h
pod-demo 2/2 Running 4 4h53m

效果验证：

#手动进入容器删除index.html文件，再监控pod状态
[root@master manifests]# kubectl exec -it liveness-httpget-pod — /bin/sh
/ # rm -f /usr/share/nginx/html/index.html

#查看pod
[root@master manifests]# kubectl get pods -w
NAME READY STATUS RESTARTS AGE
client-f5cdb799f-pklmc 1/1 Running 0 26h
liveness-exec-pod 0/1 CrashLoopBackOff 9 24m
liveness-httpget-pod 1/1 Running 1 3m41s
myapp-9b4987d5-47sjj 1/1 Running 0 25h
myapp-9b4987d5-684q9 1/1 Running 0 25h
myapp-9b4987d5-djdr9 1/1 Running 1 25h
nginx-deploy-84cbfc56b6-tcssz 1/1 Running 0 29h
pod-demo 2/2 Running 4 4h57m

#发现liveness-httpget-pod已经重启了一次