mixin: make range interval configurable in alerts

[jmichalek132]

What this PR does

Which issue(s) this PR fixes or relates to

Fixes #7546

Checklist

• Tests updated.
• Documentation added.
• CHANGELOG.md updated - the order of entries should be [CHANGE], [FEATURE], [ENHANCEMENT], [BUGFIX].
• about-versioning.md updated with experimental features.

[dimitarvdimitrov]

the approach looks good 👍

[jmichalek132]

As discussed, the range selector is now dynamic only for alerts with the default value under 10m.

[dimitarvdimitrov]

thanks for the change. There is one more query I could find in autoscaling.libsonnet which uses a range of 5m. Can you take care of that too?

mimir/operations/mimir-mixin/alerts/autoscaling.libsonnet

Line 43 in fd94abe

label_replace(rate(keda_scaler_errors[5m]), "namespace", "$1", "exported_namespace", "(.*)")

[jmichalek132]

thanks for the change. There is one more query I could find in autoscaling.libsonnet which uses a range of 5m. Can you take care of that too?

mimir/operations/mimir-mixin/alerts/autoscaling.libsonnet

Line 43 in fd94abe

label_replace(rate(keda_scaler_errors[5m]), "namespace", "$1", "exported_namespace", "(.*)")

fixed.

[jmichalek132]

I also noticed that a lot of recording rules have range interval hardcoded and don't use recording_rules_range_interval variable, some of them having 1m hardcoded https://github.com/grafana/mimir/blob/main/operations/mimir-mixin/recording_rules.libsonnet#L338. I will open a separate PR to address those.

[jmichalek132]

Test failure seems to be unrelated to my changes to the mixin.

[dimitarvdimitrov]

Test failure seems to be unrelated to my changes to the mixin.

yep, there's already a filed issue for that test #5471

[dimitarvdimitrov]

LGTM, thank you :)

[dimitarvdimitrov]

would actually be nice to add a changelog entry. My suggestion was something like

...
### Mixin 
...
* [ENHANCEMENT] Alerts: allow configuring alerts range interval via `_config.base_alerts_range_interval_minutes`. #7591

[dimitarvdimitrov]

lovely, thank you!