Kubernetes Cookbook - Second Edition

Pod as a single Job

A Job-like Pod is suitable for testing your containers, which can be used for unit test or integration test; alternatively, it can be used for batch programs:

1. In the following example, we will write a Job template to check the packages installed in image Ubuntu:

$ cat job-dpkg.yamlapiVersion: batch/v1kind: Jobmetadata:  name: package-checkspec:  template:    spec:      containers:      - name: package-check        image: ubuntu        command: ["dpkg-query", "-l"]      restartPolicy: Never

Note that restart policy for Pods created in a Job should be set to Never or OnFailure, since a Job goes to termination once it is completed successfully.

2. Now, you are ready to create a job using your template:

$ kubectl create -f job-dpkg.yamljob.batch "package-check" ...