ghalistener high cardinality metrics

[christophermichaeljohnston]

Checks

• [X] I've already read https://docs.github.com/en/actions/hosting-your-own-runners/managing-self-hosted-runners-with-actions-runner-controller/troubleshooting-actions-runner-controller-errors and I'm sure my issue is not covered in the troubleshooting guide.
• [X] I am using charts that are officially provided

Controller Version

0.9.2

Deployment Method

Helm

Checks

• [X] This isn't a question or user support case (For Q&A and community support, go to Discussions).
• [X] I've read the Changelog before submitting this issue and I'm sure it's not due to any recently-introduced backward-incompatible changes

To Reproduce

All actions scheduled by ghalistener use a new runner causing a new metric for every single action. This is because the metrics include runner_id and runner_name which is distinct for every run. For example:

gha_completed_jobs_total{<snip>,runner_id="71363",runner_name="self-hosted-linux-x64-zfhfn-runner-k752n"} 1
gha_completed_jobs_total{<snip>,runner_id="71369",runner_name="self-hosted-linux-x64-zfhfn-runner-pr56c"} 1
gha_completed_jobs_total{<snip>,runner_id="71376",runner_name="self-hosted-linux-x64-zfhfn-runner-qns9x"} 1

The <snip> labels above are identical for the same workflow, but there is a new metric for each action due to runner_id and runner_name being unique.

This also causes memory and cpu usage to continually creep as the listener must keep track of all these metrics, even though it will never update them, due to the unique labels.

Describe the bug

^ see above

This was fixed in githubrunnerscalesetlistener in #3003 and the fix needs to be included in ghalistener.

Describe the expected behavior

Metrics should not include labels are unique as this causes high cardinality and renders the counters, which will only have a value of 1, as unusuable.

Additional Context

n/a

Controller Logs

n/a

Runner Pod Logs

n/a

[github-actions[bot]]

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[christophermichaeljohnston]

^^ gha listener memory and cpu usage increase caused by tracking of high cardinality metrics

[iwaffles]

Related to #3153