ci: add standalone Slurm test cluster#8
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Single-node Slurm 25.11.2 cluster running in two Podman containers (controller + compute node) on Ubuntu 26.04, for testing job submission locally and in GitHub CI without real HPC infrastructure.
- Rename slurm-test/ to standalone-slurm/ - Add .github/workflows/slurm-integration.yml triggered on changes to standalone-slurm/ or src/, replacing the misplaced workflow that was inside the directory and never picked up by GitHub Actions
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Moves standalone-slurm/ into tests/integration/stacks/local-slurm (+ shared _images/slurm), matching IC-ADR-002's stack conventions: healthchecks gate container startup instead of hand-rolled sleeps, the Slurm package version is pinned and Renovate-tracked, the munge key is generated fresh per run instead of baked into the image, and the image is prebuilt to GHCR by a separate workflow.
podman-compose up was silently rebuilding the slurm image from source on every CI run instead of using the GHCR-published one, since the build: fallback wins whenever the tagged image isn't already present locally. Pin compose.yml to a literal digest reference so Renovate's docker-compose manager can manage it directly, and pull it explicitly in CI so a missing digest fails loudly instead of falling back to a rebuild. The pinned digest is currently a placeholder since the image hasn't been published to GHCR yet; Renovate will open a PR with the real digest once build-local-slurm-image.yml pushes it.
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Summary
standalone-slurm/— a containerised single-node Slurm 25.11.2 cluster on Ubuntu 26.04 for testing job submission locally and in GitHub CIintercede-slurmctld) and compute node (intercede-c1) run as separate Podman containers on a shared network.github/workflows/slurm-integration.ymltriggered on changes tostandalone-slurm/orsrc/compose.ymlby digest and lets Renovate track it, instead of silently rebuilding from source on every CI runDigest pin bootstrap
The image isn't published to GHCR yet, so
compose.ymlcurrently pins a placeholder digest. Rollout:podman-compose pulluntil real content exists at that tag (expected; there's nothing to test yet).build-local-slurm-image.ymlruns and publishes the real image to:latest.:latest's actual digest and opens a PR rewriting the pin to the real digest.