Lab 8 - Cron Jobs¶

20 min Beginner

Problem¶

Your commander runs a simple status check on the X-Wing fleet by hand, every few minutes. To save time, you've been asked to automate it with a CronJob.

The CronJob must meet these requirements:

The CronJob is named xwing-cronjob.
It runs every two minutes, using the cron expression */2 * * * *.
It uses the image registry.access.redhat.com/ubi9/ubi-minimal.
The container runs this command, which prints the date and the fleet status:
```
/bin/sh -c 'date; echo "X-Wing fleet status: all systems go"'
```
Failed jobs are retried (restartPolicy: OnFailure).
Only the last 3 successful jobs are kept.

Setup¶

oc new-project lab8

Verification¶

Check the CronJob. After a couple of minutes, LAST SCHEDULE shows when it last ran:
```
oc get cronjob xwing-cronjob
```

You don't have to wait for the schedule. Trigger a run now by creating a Job from the CronJob's template:

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

Watch the scheduled Jobs appear every two minutes, then read the logs of all of them:

oc get jobs -w

for job in $(oc get jobs -o name); do
  echo "== ${job}"
  oc logs "${job}"
done

Cleanup¶

oc delete project lab8