Log viewing problem in UI due pod name changes

[tczhao]

Summary

#6712
introduce POD_NAMES Whether to have pod names contain the template name (v2) or be the node id (v1).

#6925
forces all podname on UI to align with v2,

These introduce problems:

• by setting POD_NAMES to v2 on workflow-controller

all the historical archived workflow logs won't be viewable in UI because they are stored without the template name

• by setting POD_NAMES to v1 on workflow-controller

all the new workflow/archived workflows logs won't be viewable in UI because they are stored without the template name

What version of Argo Workflows are you running?
master: cf9a6cd

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[alexec]

This is a really good point. The UI needs to be smarter, and know which pod name format we use.

Proposal:

We annotate news workflow with workflows.argoproj.io/pod-name-format: v2, that data is available in the UI, so the UI can be smart.

@sarabala1979 @JPZ13 thoughts?

[alexec]

Aside - I anticipate this being number 1 complained feature if we don't fix quickly.

[sarabala1979]

I like the idea of annotating the version.

[sarabala1979]

@JPZ13 Can you take this issue to fix it?

[JPZ13]

@sarabala1979 @alexec Yep - I can work on it this afternoon