실습

Job

1. Job 생성

   cat <<EOF | kubectl create -f -
   apiVersion: batch/v1
   kind: Job
   metadata:
     name: sleepy
   spec:
     template:
       spec:
         containers:
         - name: resting
           image: busybox
           command: ["/bin/sleep"]
           args: ["3"]
         restartPolicy: Never
   EOF

2. 생성된 Job 상태 확인

   kubectl get job sleepy

3. Job에 발생한 Event 확인

   kubectl describe job sleepy

4. 생성된 Pod 확인

   kubectl get pod -l job-name=sleepy

5. 생성된 Job의 Manifest를 YAML 형식으로 출력

   kubectl get job sleepy -o yaml | grep -A 14 -B 1 ^spec

6. Job 삭제

   kubectl delete job sleepy

7. Job 생성

   cat <<EOF | kubectl create -f -
   apiVersion: batch/v1
   kind: Job
   metadata:
     name: sleepy
   spec:
     completions: 5
     template:
       spec:
         containers:
         - name: resting
           image: busybox
           command: ["/bin/sleep"]
           args: ["3"]
         restartPolicy: Never
   EOF

8. 생성된 Job 상태 확인

   kubectl get job sleepy

9. 생성된 Pod 확인

   kubectl get pod -l job-name=sleepy

10. Job 삭제

    kubectl delete job sleepy

11. Job 생성

    cat <<EOF | kubectl create -f -
    apiVersion: batch/v1
    kind: Job
    metadata:
      name: sleepy
    spec:
      completions: 5
      parallelism: 2
      template:
        spec:
          containers:
          - name: resting
            image: busybox
            command: ["/bin/sleep"]
            args: ["3"]
          restartPolicy: Never
    EOF

12. 생성된 Job 상태 확인

    kubectl get job sleepy

13. 생성된 Pod 확인

    kubectl get pod -l job-name=sleepy

14. Job 삭제

    kubectl delete job sleepy

15. Job 생성

    cat <<EOF | kubectl create -f -
    apiVersion: batch/v1
    kind: Job
    metadata:
      name: sleepy
    spec:
      completions: 5
      parallelism: 2
      activeDeadlineSeconds: 15
      template:
        spec:
          containers:
          - name: resting
            image: busybox
            command: ["/bin/sleep"]
            args: ["5"]
          restartPolicy: Never
    EOF

16. 생성된 Job 상태 확인

    kubectl get job sleepy

17. 생성된 Pod 확인

    kubectl get pod -l job-name=sleepy

18. Job에 발생한 Event 확인

    kubectl describe job sleepy

19. Job 삭제

    kubectl delete job sleepy

CronJob

1. CronJob 생성

   cat <<EOF | kubectl create -f -
   apiVersion: batch/v1beta1
   kind: CronJob
   metadata:
     name: sleepy
   spec:
     schedule: "*/1 * * * *"
     jobTemplate:
       spec:
         template:
           spec:          
             containers:
             - name: resting
               image: busybox
               command: ["/bin/sleep"]
               args: ["5"]
             restartPolicy: Never
   EOF

2. 생성된 CronJob 상태 확인

   kubectl get cronjob sleepy

3. Job 목록 확인

   kubectl get job

4. Pod 목록 확인

   kubectl get pod -l job-name

5. CronJob 삭제

   kubectl delete cronjob sleepy

6. CronJob 생성

   cat <<EOF | kubectl create -f -
   apiVersion: batch/v1
   kind: CronJob
   metadata:
     name: sleepy
   spec:
     schedule: "*/1 * * * *"
     jobTemplate:
       spec:
         template:
           spec:
             activeDeadlineSeconds: 10          
             containers:
             - name: resting
               image: busybox
               command: ["/bin/sleep"]
               args: ["30"]
             restartPolicy: Never
   EOF

7. 생성된 CronJob 상태 확인

   kubectl get cronjob sleepy

8. Job 목록 확인

   kubectl get job

9. Pod 목록 확인

   kubectl get pod -l job-name

10. CronJob 삭제

    kubectl delete cronjob sleepy