ARC runner fleet IaC — 4-tier catalog × 11 orgs (2026-07-18)#4
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Standardized the self-hosted ARC runner fleet: canonical 4 size tiers
(x64-4/8/16/32) replicated across all 11 orgs (44 pools), placed via a
single ci-runner=true node label across all 9 runner nodes (k8s-w1..5 +
k8s-build1..4), with RUNNER_LINUX_X64_{4,8,16,32} org vars mapped to each
org's own tier pool. Fixes the _4->-8 mis-mapping, inconsistent sizing,
and the hostname-pin that stranded the idle build2/3/4 nodes.
Tuned base values (values-size-*.yaml) + reproducible generators
(fleet-build-values.py, fleet-rollout.sh, fleet-set-org-vars.sh).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Version-controls the standardized self-hosted ARC runner fleet (see
k8s/arc-runners/README.md).What this is: the infrastructure-as-code for the GitHub Actions self-hosted runners, after the 2026-07-18 fleet standardization.
What changed on the cluster (already applied via Helm):
x64-4/8/16/32) replicated across all 11 orgs = 44 pools. Sizes 4/8 are burstable (pack on shared workers, burst for heavy cold builds); 16/32 guaranteed (build nodes only).ci-runner=truenode label on all 9 runner nodes (k8s-w1..5+k8s-build1..4) — replaces the old hostname pins that stranded the idlek8s-build2/3/4expansion.RUNNER_LINUX_X64_{4,8,16,32}org vars → each org's own tier pool. Fixes the_4→-8mis-mapping (5 orgs) and the inconsistent/undersized sizing.Files: tuned base values
values-size-*.yaml(source of truth for sizing) + reproducible generatorsfleet-build-values.py/fleet-rollout.sh/fleet-set-org-vars.sh.🤖 Generated with Claude Code