feat(deployments): pass pod annotations through k8s workloads + platform defaults - #1876
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Included review availability: Your plan provides up to 12 included reviews per hour; 9 remain after this review. 📝 WalkthroughWalkthroughThe Models Controller now supports platform-default Kubernetes pod annotations, node selectors, and tolerations. Per-entity settings override matching defaults. Kubernetes Jobs and Deployments receive compiled pod annotations. ChangesKubernetes pod configuration
Sequence Diagram(s)sequenceDiagram
participant ModelsController
participant build_k8s_deployment_backend_config
participant K8sDeploymentConfig
participant CompiledWorkload
participant KubernetesPodTemplates
ModelsController->>build_k8s_deployment_backend_config: provide platform defaults
build_k8s_deployment_backend_config->>K8sDeploymentConfig: merge defaults with entity settings
K8sDeploymentConfig->>CompiledWorkload: compile nodeSelector and podAnnotations
CompiledWorkload->>KubernetesPodTemplates: render Job and Deployment annotations
Priority: ⬇️ Low Merge Risk: 🟡 Moderate · up to This change adds platform Kubernetes scheduling defaults, but deployments cannot explicitly clear inherited scheduling settings. That can place workloads on unintended nodes or retain tolerations, so the issue should be resolved or explicitly accepted before merge. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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In
`@services/core/models/src/nmp/core/models/controllers/backends/deployments_plugin/config.py`:
- Line 35: Update the default_tolerations field annotation in
DeploymentsPluginConfig to permit string or integer values, matching
Toleration.toleration_seconds input such as tolerationSeconds: 300, and add
coverage confirming integer-valued tolerations are accepted.
In
`@services/core/models/src/nmp/core/models/controllers/backends/deployments_plugin/nim_compiler.py`:
- Around line 364-365: Update the defaulting logic around k8s.node_selector and
the corresponding tolerations handling to distinguish an absent entity field
from an explicitly empty value. Apply platform defaults only when the entity
field is absent, preserving node_selector: {} and tolerations: [] as intentional
overrides; do not use truthiness checks for presence.
In
`@services/core/models/tests/unit/controllers/backends/deployments_plugin/test_nim_compiler.py`:
- Around line 227-229: The test currently claims to cover per-entity
pod-annotation precedence, but k8s_backend_config_from_nim_operator only
forwards tolerations and node_selector, so that path is unreachable. Either
update k8s_backend_config_from_nim_operator to pass entity annotations through
k8s_kwargs and add an actual collision test via DeploymentConfigView, or remove
the undocumented precedence claim and retain only a defaults-based annotation
test.
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docs/set-up/config-reference.mdxk8s/helm/values.yamlplugins/nemo-deployments/openapi/openapi.yamlplugins/nemo-deployments/src/nemo_deployments_plugin/backends/k8s/compiler.pyplugins/nemo-deployments/src/nemo_deployments_plugin/backends/k8s/deployments.pyplugins/nemo-deployments/src/nemo_deployments_plugin/backends/k8s/jobs.pyplugins/nemo-deployments/src/nemo_deployments_plugin/entities.pyplugins/nemo-deployments/tests/unit/backends/k8s/test_compiler.pyservices/core/models/src/nmp/core/models/controllers/backends/deployments_plugin/config.pyservices/core/models/src/nmp/core/models/controllers/backends/deployments_plugin/nim_compiler.pyservices/core/models/tests/unit/controllers/backends/deployments_plugin/test_nim_compiler.py
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…orm defaults The deployments plugin rendered k8s Job/Deployment pod templates with labels only and no annotations, so there was no way to pass an Istio annotation through the config. A mesh-injected istio-proxy sidecar therefore kept a model weight-puller Job's pod Running 0/1 forever after the puller container exited 0 (the sidecar never terminates on a plain Job). Changes: - Add pod_annotations (and node_selector) to the plugin K8sDeploymentConfig and thread pod_annotations onto the pod-template V1ObjectMeta in both workload paths (Job build_job_body, Deployment build_deployment_body) via the compiler's CompiledWorkload. node_selector is wired into the pod spec. k8s-only by construction; docker/openshell unaffected. - Add platform defaults to the models deployments-plugin config: default_pod_annotations (key-wise merge, per-entity value wins), default_node_selector, and default_tolerations, applied to every k8s deployment/job for all engines (nim/vllm/generic) in build_k8s_deployment_backend_config. - Ship the Istio native-sidecar annotation (sidecar.istio.io/nativeSidecar: "true") as the platform default in the helm values, so the mesh proxy is injected as a native sidecar that k8s terminates when the Job's main container exits — letting the puller Job complete while keeping mesh mTLS egress (inject: "false" is not viable in-mesh). Adds unit tests for annotations landing on both Job and Deployment pod templates, key-wise annotation merge, node selector + tolerations defaults across all engines, and the docker path staying annotation-free. Regenerated the deployments plugin OpenAPI spec and the config reference doc. Signed-off-by: Ben McCown <bmccown@nvidia.com>
…ault Self-review surfaced that the key-wise-merge test asserted only that platform default annotations land — it never exercised a real same-key collision, so the documented 'per-entity value wins over the platform default' precedence was untested. Split it into two honest tests: one asserting the platform defaults are applied/merged, and one that injects a per-entity K8sDeploymentConfig with a conflicting pod_annotations key and verifies the entity value wins while non-conflicting keys from both sides are retained. Signed-off-by: Ben McCown <bmccown@nvidia.com>
Adding the default_pod_annotations platform default to the basePlatformConfig block in values.yaml shifted the line numbers of later documented keys, so helm-docs re-emits the README with updated values.yaml#L<n> anchor references. Regenerated via the pinned helm-docs v1.14.2 hook; changes are anchor line numbers only, no content changes. Signed-off-by: Ben McCown <bmccown@nvidia.com>
The plugin Toleration.toleration_seconds field is int, but default_tolerations typed its dict values as str-only, so a platform-default toleration with tolerationSeconds: 300 would fail pydantic validation before reaching Toleration. Widen to dict[str, str | int] and add integer-value coverage. Addresses CodeRabbit review feedback. Signed-off-by: Ben McCown <bmccown@nvidia.com>
…faults Adds default_affinity and default_topology_spread_constraints platform defaults (models DeploymentsPluginConfig), applied to every k8s model deployment/job for all engines when the deployment does not already set them (a per-entity affinity/constraint wins wholesale). Adds topology_spread_constraints to the plugin K8sDeploymentConfig (raw Kubernetes objects, deserialized to V1TopologySpreadConstraint) and threads it onto the pod spec in compile_workload; affinity already existed per-entity. Addresses review feedback asking for a selector companion (affinity + topology spread) alongside the node-selector default. Includes unit tests for both defaults across all engines plus entity-wins precedence, and regenerates the plugin OpenAPI + config reference. Signed-off-by: Ben McCown <bmccown@nvidia.com>
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Per review: the Istio native-sidecar annotation should not be baked into the chart as a platform default — it is an env-specific concern that belongs in the deployment's own values (e.g. the aire-dev Flux app). Remove the default_pod_annotations default that #1876 added to the chart's models-backend block. The executor-config MECHANISM added in this PR (K8sExecutorConfig.default_pod_annotations et al.) stays, so any deployment can still set the annotation via deployments.executors[].config.default_pod_annotations; the chart just no longer ships a value. Regenerated the helm README (line-anchor shifts only). Signed-off-by: Ben McCown <bmccown@nvidia.com>
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Summary
The deployments plugin rendered Kubernetes Job/Deployment pod templates with labels only and no annotations, so there was no way to pass an Istio annotation through the config. A mesh-injected
istio-proxysidecar therefore kept a model weight-puller Job's podRunning 0/1forever after the puller container exited0— a plain Job's sidecar never terminates on its own. Settingsidecar.istio.io/inject: "false"is not a viable fix: the files service is in-cluster/in-mesh, so the puller needs its sidecar for mTLS egress.This adds pod-annotation (and node-selector) passthrough to the plugin's k8s workloads, plus platform-level default annotations / node selector / tolerations in the models service, and ships the Istio native-sidecar annotation as the platform default so the mesh proxy is injected as a native sidecar that Kubernetes terminates when the Job's main container exits — letting the puller Job complete while keeping mesh mTLS egress.
Changes
pod_annotationsandnode_selectortoK8sDeploymentConfig(plugins/nemo-deployments/.../entities.py); carrypod_annotationsonCompiledWorkloadand stamp them onto the pod-templateV1ObjectMeta(annotations=...)in both workload paths (backends/k8s/jobs.pybuild_job_bodyandbackends/k8s/deployments.pybuild_deployment_body). Wirenode_selectorinto the pod spec inbackends/k8s/compiler.py. k8s-only by construction — docker/openshell unaffected.default_pod_annotations,default_node_selector, anddefault_tolerationstoDeploymentsPluginConfig(services/core/models/.../deployments_plugin/config.py), merged into the compiledK8sDeploymentConfiginbuild_k8s_deployment_backend_configfor all engines (nim/vllm/generic). Annotations merge key-wise (a per-entity value wins over the platform default for the same key); per-entity node selector / tolerations win wholesale when present.sidecar.istio.io/nativeSidecar: "true") as the platform default in the Helm valuesbasePlatformConfigblock.make refresh-openapi) and the config reference doc (docs/set-up/config-reference.mdx).Type of Change
Quality Gates
Verification
Signed-off-by:traileruv run pre-commit run -apasses, or any blocked checks are identified belowTargeted validation:
Note: the
helm-docspre-commit hook requires thehelm-docsbinary (runs in CI's container); thevalues.yamlchange lives inside thebasePlatformConfigliteral block below the documented line anchors, so it produces nok8s/helm/README.mdchange.Summary by CodeRabbit
New Features
Documentation