Lab 8 Solution - Cron Jobs¶

xwing-cronjob.yaml

apiVersion: batch/v1
kind: CronJob
metadata:
  name: xwing-cronjob
spec:
  schedule: "*/2 * * * *"
  successfulJobsHistoryLimit: 3
  jobTemplate:
    spec:
      template:
        spec:
          restartPolicy: OnFailure
          containers:
            - name: xwing-status
              image: registry.access.redhat.com/ubi9/ubi-minimal
              command: ["/bin/sh", "-c"]
              args: ['date; echo "X-Wing fleet status: all systems go"']

oc apply -f xwing-cronjob.yaml
oc create job xwing-manual --from=cronjob/xwing-cronjob
oc wait --for=condition=Complete job/xwing-manual --timeout=60s
oc logs job/xwing-manual

Expected output

Thu Sep 24 23:20:00 UTC 2026
X-Wing fleet status: all systems go

Notes¶

Time zones: schedules use the kube-controller-manager's time zone, usually UTC. Set spec.timeZone (for example timeZone: America/New_York) to schedule in a specific zone.
Missed runs: set startingDeadlineSeconds to control whether a run that was missed (for example, because the cluster was down) still starts late.
Overlapping runs: concurrencyPolicy: Forbid skips a run if the previous one is still going. Replace cancels the old one.
Use crontab.guru to check cron expressions.