feat(aisix): standalone mode, and drop the pinned uid from podSecurityContext - #388
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…yContext Two changes to the data-plane chart. The pod security context no longer pins `runAsUser: 10001` / `fsGroup: 10001`. Those were there because the image declared its user by name, which the kubelet cannot verify against `runAsNonRoot`; the image now declares it numerically, so `runAsNonRoot` alone is enough. Nothing in the chart depended on the numbers — the only writable path is an emptyDir — and a fixed uid/gid can be pinned back by setting the two keys again. `controlPlane.enabled` (default true, so existing installs render byte-for-byte as before) selects between the two ways the gateway can be run. With false it runs standalone, as the open-source gateway: no control plane, no certificate bundle, no `AISIX_MANAGED__*` environment. The chart renders a startup config into a ConfigMap pointing `resources_file` at a mounted `resources.yaml` and leaving the admin listener unbound, and mounts both under their own directories so neither shadows the image's own `/etc/aisix/config.managed.yaml`. Resources come from exactly one of `standalone.resources` (inline, rendered into a Secret rather than a ConfigMap because provider keys are credentials), `standalone.existingSecret`, or `standalone.existingConfigMap`. Everything the chart already sets through environment variables — proxy address, metrics address, the rate-limit backend, `extraEnvVars` — stays that way in both modes, so the rendered config carries only what env cannot express. The gateway re-reads the resources file on SIGHUP only, and the chart does not send one. A checksum of the rendered config and inline resources rides on the pod template, so `helm upgrade` rolls the pods when either changes; an out-of-band edit to an existing Secret or ConfigMap needs a rollout restart, which the values comments, the README and NOTES all say. CI gains `charts/aisix/ci/standalone-values.yaml`, which `ct lint` picks up alongside the existing default values, plus a kind install step that is the chart's first real install test. It installs against `ghcr.io/api7/aisix:dev` because the released image for the current appVersion still declares a named USER and so cannot start without a pinned uid.
📝 WalkthroughWalkthroughThe AISIX Helm chart now supports standalone operation through ChangesStandalone AISIX chart
Priority: ⬇️ Low Estimated code review effort: 3 (Moderate) | ~25 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
participant Helm
participant Kubernetes
participant AisixDeployment
Helm->>Kubernetes: Validate standalone values
Helm->>Kubernetes: Create ConfigMap and inline resources Secret or use external source
Kubernetes->>AisixDeployment: Mount standalone configuration and resources
AisixDeployment->>AisixDeployment: Load resources.yaml
Merge Risk: 🟠 High · up to Default chart installations can fail to start, so the numeric UID should be restored before merge. 🚥 Pre-merge checks | ✅ 5 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (5 passed)
Full details: E2e Test Quality ReviewExplanation Blocking E2E gap: the new CI step only runs Resolution Extend the kind test to invoke the installed proxy Service, preferably through port-forwarding, and assert a successful
✨ Finishing Touches🧪 Generate unit tests (beta)
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Inline comments:
In `@charts/aisix/values.yaml`:
- Around line 233-236: Restore podSecurityContext.runAsUser: 10001 in the chart
values so the default aisix image can satisfy runAsNonRoot even though it
declares the user symbolically; retain the existing security context settings
and do not add unrelated UID/GID changes.
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.github/workflows/ci.yamlcharts/aisix/README.mdcharts/aisix/README.md.gotmplcharts/aisix/ci/standalone-values.yamlcharts/aisix/templates/NOTES.txtcharts/aisix/templates/_helpers.tplcharts/aisix/templates/configmap.yamlcharts/aisix/templates/deployment.yamlcharts/aisix/templates/secret.yamlcharts/aisix/values.yaml
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Approved per maintainer decision: standalone mode + securityContext defaults verified (standalone install leg green in CI, default-mode render unchanged apart from the removed UID pins).
2 participants
Two decided changes to
charts/aisix, plus the CI that covers the second.podSecurityContextno longer pins a uidrunAsUser: 10001andfsGroup: 10001were in the default pod security contextonly because the image declared its user by name, which the kubelet cannot verify
against
runAsNonRoot. The image declares it numerically now, sorunAsNonRootalone is enough and the chart stops making a decision that belongs to the cluster.
Nothing depended on the numbers: the only writable path the gateway uses is an
emptyDir, and with no
fsGroupthe kubelet creates it world-writable. A fixeduid/gid can be pinned back by setting the two keys again, which the values comment
says.
This default ships together with the next
appVersionwhose image carries thenumeric USER. Until then, the released image for the current
appVersionstilldeclares a named USER and cannot start under
runAsNonRootwithoutrunAsUser,which is why the new install test pins the development image.
Standalone mode
controlPlane.enabledselects between the two ways the gateway can be run. Itdefaults to
true, and the rendered output in that mode is unchanged except forthe security-context change above.
With
controlPlane.enabled: falsethe gateway runs as the open-source AI gateway:no control plane, no certificate Secret rendered or required, no
controlPlanevalue read, and no
AISIX_MANAGED__*environment. The chart renders a startupconfig into a ConfigMap that sets
resources_fileand leaves the admin listenerunbound — the admin surface is read-only against a file source and binding it
would need admin keys the chart does not manage — and mounts the config and the
resources file under their own directories, so neither shadows the
/etc/aisix/config.managed.yamlthe image ships.Resources come from exactly one of:
standalone.resources— the file inline, as a map, rendered into a chart-managedSecret. A Secret rather than a ConfigMap because
resources.yamlcarriesprovider keys;
${VAR}references resolved fromextraEnvVarskeep thecredential itself out of the values file.
standalone.existingSecret— keyresources.yaml.standalone.existingConfigMap— keyresources.yaml.Setting none of them, or more than one, fails the render.
aisix.validateValuesnow enforces whichever mode's requirements apply;
controlPlane.baseURLand thecertificate bundle are required only in control-plane mode.
Everything the chart already sets through environment variables stays that way in
both modes — the proxy address, the metrics address, the rate-limit backend, and
anything a user adds through
extraEnvVars(AISIX_<SECTION>__<KEY>, whichoverrides the rendered file). The rendered config therefore carries only what an
environment variable cannot express as an overridable default.
Applying a change
The gateway re-reads the resources file on SIGHUP only and the chart never sends
one, so a rollout is what applies a change. The pod template carries a checksum of
the rendered config and, when the resources are inline, of the rendered Secret — so
editing
standalone.resourcesand runninghelm upgraderolls the pods on itsown. An out-of-band edit to an existing Secret or ConfigMap does not, and needs
kubectl rollout restart. The values comments, the README and NOTES all say so.CI
charts/aisix/ci/standalone-values.yamlcarries a minimal validresources.yamlderived from the published open-source quickstart — one provider key, one model,
one caller API key.
ct lintpicks it up alongside the existing default valueswith no workflow change.
A new kind step installs the chart with those values and waits for the Deployment,
which is this chart's first real install test. It is a direct
helm installratherthan an addition to the
ct installlist because chart-testing installs everyci/*-values.yamlit finds, and the existingci/default-values.yamlis lint-only— it names a control plane and a certificate Secret that do not exist in the
cluster.
Verification
The rendered startup config and resources file were run through the real gateway
binary, and the chart was installed into a kind cluster: the pod becomes ready, the
gateway loads the resources from the mounted Secret, reports
admin.enabled = false — admin surface not bound, and/v1/modelsthrough the Service returns thedeclared model. The
standalone.existingSecretpath was exercised the same way.The default control-plane render was diffed against
mainand differs only in thetwo security-context keys.
No
version/appVersionbump — the release runbook owns those.Fixes api7/AISIX-Cloud#1640
Fixes api7/AISIX-Cloud#1641
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Summary by CodeRabbit
New Features
Documentation
Tests