fix(recipe/bundler): fail bundles missing a required node selector - #2570
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Other affected recipes without evidence yet: 6These recipes are affected by this PR but carry no committed evidence pointer, so there is
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Included review availability: Your plan provides up to 12 included reviews per hour; 10 remain after this review. 📝 WalkthroughWalkthroughThe change adds Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: ⚪ Minimal · up to Bundles for the affected Slurm components now fail when required node selectors are absent, while explicit empty-selector overlays retain single-node opt-out behavior. No current merge-blocking risk is identified. Suggested reviewers: 🚥 Pre-merge checks | ✅ 4✅ Passed checks (4 passed)
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Actionable comments posted: 2
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Inline comments:
In `@pkg/bundler/bundler.go`:
- Line 1924: Update validateRequiredNodeSelectors to return or propagate the
error from recipe.GetComponentRegistryFor(provider) instead of returning nil
when registry resolution fails. Preserve the existing comp == nil no-op for
legitimate non-component entries, while ensuring extraction and bundle
generation stop on registry errors.
- Line 1933: Update the validation flow around dynamicPathSetFor and
validateRequiredNodeSelectors so paths required by requireNodeSelector remain
subject to validation; either reject --dynamic for required selector paths or
exclude those paths from policy.optOut during validation, ensuring
requireNonEmptyNodeSelectors still checks them.
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docs/contributor/component.mddocs/user/cli-reference.mdpkg/bundler/accounting_test.gopkg/bundler/bundler.gopkg/bundler/bundler_test.gopkg/bundler/stock_render_parity_golden_test.gopkg/bundler/testdata/stock_render_golden.yamlpkg/recipe/components.gopkg/recipe/components_test.gopkg/recipe/testdata/catalog_parity_golden.yamlrecipes/overlays/h100-kind-training-slurm.yamlrecipes/registry.yamltests/chainsaw/cli/bundle-slinky-storage/chainsaw-test.yamltests/chainsaw/cli/recipe-overlays/chainsaw-test.yaml
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Inline comments:
In `@pkg/bundler/bundler.go`:
- Line 1970: Update validateRequiredNodeSelectors to recognize non-empty
map[any]any values as valid selector overrides, preserving the existing
map[string]any handling and missing-selector behavior for unsupported or empty
values. Ensure mergeValues output from ComponentRef.Overrides is accepted
without requiring callers to convert the map type.
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Inline comments:
In `@pkg/bundler/bundler_test.go`:
- Around line 2718-2732: Add an integration subtest that invokes
extractComponentValues with a dynamic path targeting the required node-selector
path controller.podSpec.nodeSelector, and assert it returns an error naming that
conflicting path. Keep the existing rejectDynamicRequiredNodeSelectorPaths unit
coverage, but ensure the new test exercises extractComponentValues through its
dynamic-path resolution and rejection flow before any policy.optOut merge.
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pkg/bundler/bundler.gopkg/bundler/bundler_test.go
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A StatefulSet whose PVC pins it to a node's zone can get permanently stuck if it first lands on the wrong node class (no selector supplied) and is only later corrected onto the right pool in a different zone: the PVC already bound to the old zone, and the pod can never attach it from the new one. Adds requireNodeSelector to the registry's SchedulingPaths so a component can opt into treating a missing --system/--accelerated- node-selector as a bundle-time error instead of a silent no-op. This stays off by default: many valid clusters have no distinct node pools, so an unset selector is usually intentional, not a mistake. No registry entry sets it yet; component opt-ins land as their own commits. Signed-off-by: Mike Cook <micook@nvidia.com>
slinky-slurm turns on requireNodeSelector (added in the prior commit) for both its system and accelerated paths: an unpinned controller/ restapi/login/accounting pod can land on a GPU node, and an unpinned NodeSet/worker pod can just as easily land on a system (non-GPU) node. Either way the pod's PVC binds to that node's zone, and a later reschedule onto the correct pool in a different zone gets stuck forever waiting on a PVC it can't attach to. This happened on a real GB200 GKE cluster because --system-node-selector was silently optional. h100-kind-training-slurm is a single Kind node with no distinct pools to select between, so it opts out via an explicit empty nodeSelector override on every declared path (the same mechanism --set/overlay users already use to opt out of toleration injection). The stock-render golden harness never exercised --system-node-selector at all; it now does, since it's a bundle-contract input several components require, same as the accelerated selector/storage class/node count already supplied there. That ripples the golden digest across every leaf, not just training-slurm ones. Signed-off-by: Mike Cook <micook@nvidia.com>
Same failure mode as slinky-slurm: slurm-accounting-mariadb's mariadb pod is backed by a PVC (mariadb.storage.storageClassName), and this component is deployed alongside slinky-slurm in every training-slurm leaf. Left unpinned, it can land on a GPU node, its PVC binds to that zone, and a later reschedule onto the correct system-node pool in a different zone gets stuck forever waiting on a PVC it can't attach to. Turns on requireNodeSelector for its single system path. h100-kind-training-slurm opts out the same way it already does for slinky-slurm: an explicit empty nodeSelector override, since Kind is a single node with no distinct pools to select between. Signed-off-by: Mike Cook <micook@nvidia.com>
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Summary
Adds an opt-in
requireNodeSelectorguard that fails a bundle instead of silently skipping node-selector injection, and turns it on forslinky-slurmandslurm-accounting-mariadb.Motivation / Context
A StatefulSet whose PVC pins it to a node's zone can get permanently stuck if it lands on the wrong node class (no selector supplied) and is only later corrected onto the right pool in a different zone — the PVC is already bound to the old zone, and the pod can never attach it from the new one. This happened on a real GB200 GKE cluster because
--system-node-selectorwas silently optional.Fixes: N/A
Related: N/A
Type of Change
Component(s) Affected
cmd/aicr,pkg/cli)cmd/aicrd,pkg/server)pkg/recipe)pkg/bundler,pkg/component/*)pkg/collector,pkg/snapshotter)pkg/validator)pkg/errors,pkg/k8s)docs/,examples/)Implementation Notes
SchedulingPaths.RequireNodeSelector(registry.yaml) opts a component'snodeScheduling.system/.acceleratedblock into failing the bundle when none of its declarednodeSelectorPathsend up with a non-empty selector. Off by default — most clusters have no distinct node pools, so an unset selector is usually intentional.validateRequiredNodeSelectors) runs at the very end ofextractComponentValues, after--set-json/--set-file, not insideapplyNodeSchedulingOverridesat injection time.--set-json/--set-filedeep-merge with "null deletes the key" semantics, so a CLI selector that satisfied injection can still be nulled back out before the bundle is written; checking the final resolved value closes that bypass.nodeSelector: {}override (same mechanism already used for toleration opt-out) — needed forh100-kind-training-slurm, a single Kind node with no distinct pools to select between.--system-node-selectorat all; it now does, since it's a bundle-contract input several components require, same as the accelerated selector/storage class/node count already supplied there. That ripples the golden digest across every leaf, not just training-slurm ones (seepkg/bundler/testdata/stock_render_golden.yaml).Testing
# Commands run (prefer `make qualify` for non-trivial changes) make qualifymake qualifypassed clean: unit tests with-race, all 24 chainsaw tests (includingcli-bundle-slinky-storageandcli-recipe-overlays, both updated to pass--system-node-selector/--accelerated-node-selectornow that they bundleslinky-slurm/slurm-accounting-mariadb), lint, vulnerability scan, license-check, api-diff, and openapi-diff.New tests added:
TestApplyNodeSchedulingOverrides_RequireNodeSelector(pkg/bundler/bundler_test.go) — missing selector fails closed, CLI selector satisfies it, overlay opt-out satisfies it, overlay-hardcoded selector satisfies it without a CLI flag, components withoutrequireNodeSelectorstay a no-op, and the--set-jsonnull-bypass regression case.TestComponentRegistry_SlurmAccountingMariaDB_NodeSchedulingPathsextended with a regression guard assertingRequireSystemNodeSelector()staystrue.Coverage on changed packages (top-level,
origin/main→ branch):pkg/bundler: 86.4% → 86.5% (+0.1%)pkg/recipe: 90.0% → 90.0% (no change)Both new exported methods (
RequireSystemNodeSelector,RequireAcceleratedNodeSelector) are covered (66.7% — the uncovered branch is just thec == nilguard, consistent with sibling getters in the same file).Risk Assessment
Rollout notes:
requireNodeSelectordefaults tofalseand is currently set only onslinky-slurmandslurm-accounting-mariadb. Any existing bundle command for those two components that omits--system-node-selector/--accelerated-node-selectorand has no overlay opt-out will now fail at bundle time instead of silently shipping an unpinned pod — this is the intended behavior change, not a regression.Checklist
make testwith-race)make lint)git commit -S) — GPG signing info