chore(ci): switch lightweight workflow jobs to ubuntu-slim - #832
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🟢 Approval recommended
The migrated jobs fit the runner’s available tooling and resource constraints while heavier workloads remain on VM runners.
Review effort: Balanced
Findings: None
What changed in this PR
Moves lightweight automation to GitHub’s ubuntu-slim runners, reducing demand on the CNCF VM runner pool.
Changes:
- Migrates lightweight CI, validation, maintenance, and release jobs.
- Reduces selected validation timeouts to 15 minutes.
- Retains VM runners for tests, type checking, CodeQL, and PyPI publishing.
| File | Description |
|---|---|
.github/workflows/stale.yml |
Moves stale processing to ubuntu-slim. |
.github/workflows/release-all.yml |
Migrates release enumeration and finalization. |
.github/workflows/prepare-release.yml |
Migrates release preparation. |
.github/workflows/prepare-backport-patch.yml |
Migrates backport preparation. |
.github/workflows/misc.yml |
Migrates lightweight checks and caps selected timeouts. |
.github/workflows/ci.yml |
Migrates matrix preparation and aggregate status. |
.github/workflows/check-links.yml |
Migrates link checking. |
.github/workflows/changelog.yml |
Migrates changelog validation. |
.github/workflows/_release-finalize.yml |
Migrates reusable release finalization. |
.github/workflows/_release-build.yml |
Migrates reusable package builds. |
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eternalcuriouslearner
approved these changes
Oct 1, 2026
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Switches lightweight CI, lint, docs, link-check, stale, and release preparation/build/finalize jobs to
ubuntu-slimand caps their timeouts at 15 minutes.Reduces load on the
cncf-ubuntu-2-8-x86runner pool by moving short-running, single-process jobs to GitHub's 1-vCPU container runners while keeping heavier or Docker-dependent jobs (test,typecheck,CodeQL-Build, and PyPIpublish) on VM runners.