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docs: sync README and runbook with 0.3.0 and 0.3.1 - #32

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simonvanlierde merged 2 commits into
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docs/release-0.3-sync
Sep 7, 2026
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docs: sync README and runbook with 0.3.0 and 0.3.1#32
simonvanlierde merged 2 commits into
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docs/release-0.3-sync

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The 0.3.1 changelog moved the cardinality ceiling and added a spike rule, but
the README's alerting section still described the old thresholds. The release
procedure introduced in 0.3.1 lived only in a comment at the top of
release.yml, where no operator reads it.

  • README alerting list: the ceiling is 30k active series, not 100k. Adds
    PrometheusCardinalitySpike and ProjectsUncovered, which were missing.
  • README checks table: just hooks also installs infra-validate at push
    when infra/ changed.
  • Runbook: a "Cutting a release" section, before "Upgrading images". Changelog
    section, tag and push, then re-bootstrap each spoke at the new tag.

Docs only. No config or code touched.

- README alerting list: cardinality ceiling is 30k, add the spike and
  uncovered-project rules
- README hooks row: infra-validate runs at push when infra/ changed
- Runbook: document cutting a release, which lived only in a workflow comment
@simonvanlierde
simonvanlierde merged commit 8aaeb6f into main Sep 7, 2026
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@simonvanlierde
simonvanlierde deleted the docs/release-0.3-sync branch September 7, 2026 05:23
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