feat: add missing cluster label to mixins

[QuentinBisson]

What this PR does / why we need it:

This PR enhance the loki alert mixins by adding the cluster label to all summary.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Checklist

• Reviewed the CONTRIBUTING.md guide (required)
• Documentation added
• Tests updated
• Title matches the required conventional commits format, see here
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[cstyan]

At the moment, some of these won't work as you'd like them to because the queries in each alerts expr are not keeping the cluster label.

[QuentinBisson]

Oh you're right :(
Btw, i've just discovered a tool call pint that could detect such issues using ci validation. Do you think it would make sense to add it to the Mimir generated rules?

[cstyan]

Oh you're right :( Btw, i've just discovered a tool call pint that could detect such issues using ci validation. Do you think it would make sense to add it to the Mimir generated rules?

It's worth looking into, happy to review a PR if you come up with something that works 👍

[QuentinBisson]

Here is the output of pint without colors :(

I think it would be best to add it to the loki-build-image but I'm not sure if you like to have contribution on that repo.

./pint-linux-amd64 --offline lint --min-severity=information /home/quentin/Documents/code/QuentinBisson/loki-upstream/production/loki-mixin-compiled-ssd/*.yaml
level=INFO msg="Finding all rules to check" paths=["/home/quentin/Documents/code/QuentinBisson/loki-upstream/production/loki-mixin-compiled-ssd/alerts.yaml","/home/quentin/Documents/code/QuentinBisson/loki-upstream/production/loki-mixin-compiled-ssd/rules.yaml"]
level=INFO msg="Offline mode, skipping Prometheus discovery"
level=ERROR msg="Execution completed with error(s)" err="invalid --min-severity value: unknown severity: information"
> ./pint-linux-amd64 --offline lint --min-severity=info /home/quentin/Documents/code/QuentinBisson/loki-upstream/production/loki-mixin-compiled-ssd/*.yaml
level=INFO msg="Finding all rules to check" paths=["/home/quentin/Documents/code/QuentinBisson/loki-upstream/production/loki-mixin-compiled-ssd/alerts.yaml","/home/quentin/Documents/code/QuentinBisson/loki-upstream/production/loki-mixin-compiled-ssd/rules.yaml"]
level=INFO msg="Offline mode, skipping Prometheus discovery"
/home/quentin/Documents/code/QuentinBisson/loki-upstream/production/loki-mixin-compiled-ssd/alerts.yaml:6-7 Bug: Template is using `cluster` label but the query removes it. (alerts/template)
 6 |             description: |
 7 |                 {{ $labels.cluster }} {{ $labels.job }} {{ $labels.route }} is experiencing {{ printf "%.2f" $value }}% errors.

/home/quentin/Documents/code/QuentinBisson/loki-upstream/production/loki-mixin-compiled-ssd/alerts.yaml:6-7 Information: Using the value of `rate(loki_request_duration_seconds_count{status_code=~"5.."}[2m])` inside this annotation might be hard to read, consider using one of humanize template functions to make it more human friendly. (alerts/template)
 6 |             description: |
 7 |                 {{ $labels.cluster }} {{ $labels.job }} {{ $labels.route }} is experiencing {{ printf "%.2f" $value }}% errors.

/home/quentin/Documents/code/QuentinBisson/loki-upstream/production/loki-mixin-compiled-ssd/alerts.yaml:19-20 Bug: Template is using `cluster` label but the query removes it. (alerts/template)
 19 |             description: |
 20 |                 {{ $labels.cluster }} {{ $labels.job }} is experiencing {{ printf "%.2f" $value }}% increase of panics.

level=INFO msg="Problems found" Bug=2 Information=1
level=ERROR msg="Execution completed with error(s)" err="found 1 problem(s) with severity Bug or higher"

[QuentinBisson]

Making sure they are all in the same order

[QuentinBisson]

@cstyan it should be fine now, pint is happy apart from the humanize thing

[cstyan]

I think it would be best to add it to the loki-build-image but I'm not sure if you like to have contribution on that repo.

Agreed, it would be best to have it nicely runnable in a reproduce-able way. For now, can you show me how the invocation of pint works and I can setup a CI job via github actions at least post-merging of your PR.

[cstyan]

LGTM; same as usual, I assume you've tried deploying the jsonnet version already to your own environment?

pint is happy apart from the humanize thing

not sure what you mean here?

[QuentinBisson]

I meant this section:

/home/quentin/Documents/code/QuentinBisson/loki-upstream/production/loki-mixin-compiled-ssd/alerts.yaml:6-7 Information: Using the value of `rate(loki_request_duration_seconds_count{status_code=~"5.."}[2m])` inside this annotation might be hard to read, consider using one of humanize template functions to make it more human friendly. (alerts/template)
 6 |             description: |
 7 |                 {{ $labels.cluster }} {{ $labels.job }} {{ $labels.route }} is experiencing {{ printf "%.2f" $value }}% errors.

But I did not really play with humanize functions :)

So I run pint from the cli for this one but I think you could use the pint ci directly:
https://cloudflare.github.io/pint/#pull-requests

There are a lot of things that could be added (like enforcing that some annotations or labels are always set) but an initial version would be good.

I will deploy it tomorrow or later today, I did not have time to full test my changes :( i'll ping you when i'm done and thank you for the review