Example cronjoblogging starting and ending of job in kube

cronjob_pre_post.sh

kind: CronJob
metadata:
  name: example
spec:
  schedule: "10 3,15,20 * * *"
  concurrencyPolicy: "Forbid"
  suspend: false
  jobTemplate:
    spec:
      template:
        metadata:
          annotations:
            log/format: json
        spec:
          containers:
            - name: example
              image: python
              lifecycle:
                postStart:
                  exec:
                   command: ["/bin/sh", "-c", "echo Container for load pipeline started"]
                preStop:
                  exec:
                      command: ["/bin/sh","-c","echo Container for load pipeline stopping"]
              imagePullPolicy: Always
              command: ["script.py"]
              args: ["--flag","value"]
              env:
                - name: NAME_OF_VARIABLE_IN_JOB
                  valueFrom:
                    configMapKeyRef:
                      name: configmap_name
                      key: key_in_configmap
              resources:
                requests:
                  memory: "4Gi"
                  cpu: "1"
                limits:
                  memory: "8Gi"
                  cpu: "2"
          restartPolicy: Never