Exercise 4.2: Designing Applications With Duration: Create a 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. Job의 상세 내용 확인

   kubectl describe job sleepy

4. 생성된 Job에 명시된 설정값 확인

   kubectl get job sleepy -o yaml | grep -A 5 ^spec

5. completions이 무엇을 의미하는지 확인

   kubectl explain job.spec.completions

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 및 Pod 상태 확인

   kubectl get job,pod -l job-name=sleepy

9. Job 삭제

   kubectl delete job sleepy

10. 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

11. 생성된 Job 및 Pod 상태 확인

    kubectl get job,pod -l job-name=sleepy

12. Job 삭제

    kubectl delete job sleepy

13. 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

14. 생성된 Job 상태 확인

    kubectl get job sleepy

15. 생성된 Job의 상태값 확인

    kubectl get job sleepy -ojsonpath='{.status.conditions}' | jq

16. Job 삭제

    kubectl delete job sleepy