fast-cron-job

---
apiVersion: batch/v1
kind: Job
metadata:
  name: pi
spec:
  parallelism: 1    
  completions: 1    
  activeDeadlineSeconds: 1800 
  backoffLimit: 6   
  template:         
    metadata:
      name: pi
    spec:
      containers:
      - name: pi
        image: perl
        command: ["perl",  "-Mbignum=bpi", "-wle", "print bpi(2000)"]
      restartPolicy: OnFailure

---
apiVersion: batch/v1
kind: CronJob
metadata:
  name: pi
spec:
  schedule: "*/3 * * * *"  
  concurrencyPolicy: "Replace" 
  startingDeadlineSeconds: 200 
  suspend: true            
  successfulJobsHistoryLimit: 3 
  failedJobsHistoryLimit: 1     
  jobTemplate:             
    spec:
      template:
        metadata:
          labels:          
            parent: "cronjobpi"
        spec:
          containers:
          - name: pi
            image: perl
            command: ["perl",  "-Mbignum=bpi", "-wle", "print bpi(2000)"]
          restartPolicy: OnFailure