K8S学习之基础十一：容器钩子
容器钩子
容器钩子分为post-start和pre-stop
post-start：容器启动后执行的命令
pre-stop：容器关闭前执行的命令，可用于优雅关闭
# 分别定义两个钩子，启动pod后更新index.html，关闭pod前正常关闭服务
vi post-pre.yaml
apiVersion: v1
kind: Pod
metadata:
name: life-demo
spec:
containers:
- name: lifecycle-demo-container
image: 172.16.80.140/nginx/nginx:1.26
imagePullPolicy: IfNotPresent
lifecycle:
postStart:
exec:
command: ["/bin/sh", "-c","echo 'lifecycle post-start' > /usr/share/nginx/html/index.html"]
preStop:
exec:
command:
- "/bin/sh"
- "-c"
- "nginx -s stop"
# 上图可以看出，nginx在启动之前，就被post-start改写了index.html文件