How to change timezone for cron job scheduler?

[pkowalski]

Hello,

We have GKE version 1.24.

All cron jobs seem to run per UTC timezone. But what we want to accomplish is to run cronjobs scheduled per Europe/Warsaw timezone.

I did read thread https://kubernetes.io/docs/concepts/workloads/controllers/cron-jobs/ 

but it does not provide answer to that. It just says timezone is taken from  kube-controller-manager but there is nothing about changing timezone in kube-controller-manager.

I am aware that it will be available as setting in 1.25 (via spec.timeZone) but we are on 1.24.

I am aware that setting TZ or CRON_TZ i can accomplish it but as per documentation - i would like to avoid using that.

[dionv]

Hello pkowalski,

As per Martijn Pieters from Stackoverflow, "

If you can upgrade to 1.24, you can instead use the new CronJobTimeZone feature gate to enable the new, official, time-zone support added with KEP 3140. Note that this is still an alpha-level feature; hopefully it will reach beta in 1.25. If all goes well, the feature should reach maturity in release 1.27.

With the feature-gate enabled, you can add a timeZone field to your CronJob spec:

apiVersion: batch/v1
kind: CronJob
metadata:
  name: scheduler
spec:
  schedule: "0 23 * * *"
  timeZone: "TIMEZONE"

"