Kubernetes学习（二）

二 POD生命周期

initC作用说明

initC举例说明

init-pod.yaml

apiVersion: v1
kind: Pod
metadata:
name: myapp-pod
labels:
app: myapp
spec:
containers:
- name: myapp-container
image: busybox
command: ['sh','-c','echo The app is running ! && sleep 3600']
initContainers:
- name: init-myservice
image: busybox
command: ['sh','-c','until nslookup myservicel;do echo waiting for myservice;sleep 2;done;']
- name: init-mydb
image: busybox
command: ['sh','-c','until nslookup mydb;do echo waiting for mydb;sleep 2;done;']

mydb.yaml

kind: Service
apiVersion: v1
metadata:
name: mydb
spec:
ports:
- protocol: TCP
port: 80
targetPort: 9377

myservice.yaml

kind: Service
apiVersion: v1
metadata:
name: myservicel
spec:
ports:
- protocol: TCP
port: 80
targetPort: 9376

如果initC没有执行成功如下图myapp-pod

创建完成两个svc后，pod的状态如下图