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CloudNative/Kubernetes/Base/PreStop和PostStart.md

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+#### preStop，pod停止前操作（优雅停止服务）
+```
+apiVersion: v1
+kind: Pod
+
+metadata:
+  name: PreStop-demo-v1
+  namespace: demo-ns
+  labels:
+    app: prestop
+    version: v1
+
+spec:
+  containers:
+  - name: prestop-demo
+    image: busybox
+    ports:
+    - name: pre-port
+      containerPort: 80
+      protocol: TCP
+    lifecycle:
+      preStop:
+        exec: ## httpGet 或 tcpSocket
+          command:
+          - '/bin/sh'
+          - '-c'
+          - 'echo stop'
+```
+
+#### postStart,pod启动前操作
+```
+apiVersion: v1
+kind: Pod
+
+metadata:
+  name: PostStart-demo-v1
+  namespace: demo-ns
+  labels:
+    app: poststart
+    version: v1
+
+spec:
+  containers:
+  - name: poststart-demo
+    image: busybox
+    ports:
+    - name: post-port
+      containerPort: 80
+      protocol: TCP
+  
+    lifecycle:
+      postStart:
+        tcpSocket:
+          port: 80
+    
+```