Rollback when timeout

General Discussions
1

I’m looking for how to rollback a k8s deploy when timeout happen. I’m using Jenkins for CICD. I want to prevent deploy with typos or something like that in resource configs. If there’s a way to verify all the configs (templates and charts) before the deploy step please tell me.

2

Have you taken a look at Kubeval?

You can run validation against the K8s configs by running the command kubeval --strict myfile.yaml. It’s pretty snazzy :slight_smile:

3

Another option can be using kubectl’s dry-run mode (–dry-run, --server-dry-run).

4

Thanks @tomasz.prus, with the flag --dry-run kubernetes or helm validate my templates for me.

Ref: https://helm.sh/docs/chart_template_guide/debugging/#scrollpane

5

For future reference - there are two OSS tools and a native option (kubectl) to do it.

OSS:

kubectl:

  • --dry-run=server
  • --dry-run=client

The OSS tools DON’T require a connection to your cluster but kubectl --dry-run=server will provide better (validation) results.

I compared the tools and wrote an article about it with all the details.

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