Kubernetes Cookbook - Second Edition

Create a parallel Job

If your batch Job doesn't have a state or dependency between Jobs, you may consider submitting Jobs in parallel. Similar to the spec.completions parameter, the Job template has a spec.parallelism parameter to specify how many Jobs you want to run in parallel:

1. Re-use a repeatable Job but change it to specify spec.parallelism: 3 as follows:

$ cat job-dpkg-parallel.yaml apiVersion: batch/v1kind: Jobmetadata:  name: package-checkspec:  parallelism: 3  template:    spec:      containers:      - name: package-check        image: ubuntu        command: ["dpkg-query", "-l"]      restartPolicy: Never

2. The result is similar to spec.completions=3, which made 3 Pods to run your application:

$ kubectl get pods --show-allNAME                  READY     STATUS      RESTARTS   AGEpackage-check-5jhr8 ...