kubernetes job的原理

job例子:

apiVersion: batch/v1   #job的apiVersion
kind: Job              #资源类型为job
metadata:              
  labels:
    name: busybox
  name: busybox
spec:
  template:
    metadata:
      name: busybox
    spec:
      containers:
        - name: busybox
          image: myhub.mingyuanyun.com/library/busybox
          command:
            - sleep
            - "30"
      restartPolicy: Never  #什么情况下重启容器,job一般只能设置为Never和OnFailure,一般设置为Never

restartPolicy: Never  #如果使用参数Never,容器启动后未成功就会一直创建新的容器
restartPolicy: OnFailure  #如果使用参数OnFailure,容器启动后未成功不会在创建新的容器,他会一直重启

 

kubectl apply -f myjob.yaml

kubectl get job

kubectl get pod --show-all

kubectl logs busybox

kubectl delete -f myjob.yaml

并行job的创建:

apiVersion: batch/v1   
kind: Job            
metadata:              
  labels:
    name: busybox
  name: busybox
spec:
completions: 6 #直到总共有6个pod成功执行 如果不指定默认值为1
parallelism: 2 #一次启动2个pod来执行job 如果不指定默认值为1 template: metadata: name: busybox spec: containers: - name: busybox image: myhub.mingyuanyun.com/library/busybox command: - sleep - "30" restartPolicy: Never

  

定时job:

apiVersion: batch/v2alpha1  #当前CronJob的apiVersion
kind: CronJob            #当前类型CronJob
metadata:              
  name: test
spec:
  schedule: "*/1 * * * *"  #运行时间,格式与linux一致
  jobTemplate:  #job模板
    spec:
      template:
         spec:
            containners:
            - name: test
              image: nginx
              command: ["echo", "this is test"]
            restartPolicy: OnFailure

  

需要在kube-aoiservier配置文件中添加

 

kubectl api-version   #查看当前所有api-version 是否支持 batch/v2alpha1

 

kubectl  get cronjob

 

posted @ 2018-06-20 11:39  划得戳  阅读(1511)  评论(0编辑  收藏  举报