☂️ Golden Versions

[philrenaud]

Umbrella issue surrounding the ability to:

• tag/pin a job version
• run diff against that job version
• prevent garbage collection of that job version, and of that job.

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RFC
Jira

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Structs:

• TaggedVersion object struct #23836
• TaggedVersion clone/copy on job versions

Tagging:

• nomad job tag CLI command scaffolding #23846
  • nomad job tag with a -version flag
  • nomad job tag without a version flag infers latest
  • nomad job tag unset to de-tag / lookup by name

Diffing:

• Compare versions by name and version number with the nomad history command
• Add a Name property to objects in nomad job history output
• Compare versions by name and version number with a nomad job diff command #23939

Reverting:

• expand nomad job revert to take a tag string #24053
• Prevent copying of job tag when reverting to a version (copying the version)

Config:

• Add max_tagged_versions_per_job agent config guardrail

UI:

• Version tag CRUD on the job/versions page #24008
  • Add tagnames to the list items in the jobs/job/versions page
  • Add a "Save Version" button on the jobs/job/versions page
  • Editable tagged version description
• Add tag filter to the jobs/job/versions page #24063

GC (TODO pending investigation):

• Add conditional to upsertJobVersion to prevent a tagged version from being pruned #23921
• Add conditional to core_sched process for core jobs to prevent a golden version from being reaped

Sentinel (TODO pending investigation):

• Expose job_versions as a top-level object that accepts a string param
• ...