Upgrade Tekton to 0.27.2

[tlawrie]

Change

• Upgrade Tekton
• Upgrade Fabric8 client

[tlawrie]

@gchickma @marcusdroy We are currently on 24.1 of Tekton.

Looking at the release notes https://github.com/tektoncd/pipeline/releases there are some changes required.

• 0.25: I don't believe there is anything critical, particularly because we don't use PipelineRuns yet
• 0.26: I don't believe we will need to do anything for this release either
• 0.27: lots of changes. Most behind alpha flags. Most of this affects functionality we would need when we move the entire workflow execution to a pipeline to have the same as our current functionality by using onError and whenExpressions to guard tasks. However that's slated for Flow 4.0
  • It also updates knative.dev/pkg which is a Tekton dependency but usually requires updates to Fabric8 that need regenerating, last time I had to do that for the community so not sure if its been done already.
  • 0.27.3 brings in compatibility with Kubernetes 1.22
• 0.28: brings in lots of changes.
  • Terminating pods so resource quotas are now able to be used properly.
  • . notation back in scope for parameters. e.g $(params["foo.bar"])
  • Cached entrypoint digest (this was a fix to our issue)
  • Label changes
• 0.29: further updates to dot notation based parameters and onError promoted to beta.

I suggest

1. we upgrade to 0.26 and take the system for a few spins without updating anything in controller. It should still work with minimal to no issues.
2. we then upgrade to 0.27.2 and revalidate. (leaving 0.27.3 until we pick up 0.28) If too many issues arise we can fall back on 0.26

   This brings us to within a few iterations of current which is a good place to be!

3. Create a future issue for a future release to look at 0.27.3, 0.28.x, 0.29.x.
4. 0.29.x brings in changes to the /tekton/run location -> Split /tekton/run directories into separate volumes. tektoncd/pipeline#4278

Let me know your thoughts...

[tlawrie]

Upgrade to Tekton 0.26 as part of Helm Chart 4.11.1 and validated a simple workflow with no issues.

Further work to be done for updating to 0.27.2

[tlawrie]

Tekton 0.30.0 was just released. No impacts to functionality that we use.

[morarucostel]

Hey @tlawrie , release 3.5.0 should include only the upgrade to Tekton 0.26 or do you think we can go all the way to 0.27.2 ?

[tlawrie]

Upgrade to Tekton 0.27.2 in Helm Chart 4.11.3 and validated with a simple workflow.

Further verification testing is needed.

[morarucostel]

Hey @aiciobanu , do you think you can do a sanity check on the flow installation using Tekton 0.27.2 in one of your environments?