fix: separate ServiceAccount for router workloads#433
fix: separate ServiceAccount for router workloads#433ambient-code[bot] wants to merge 9 commits into
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| kind: Role | ||
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| app.kubernetes.io/name: jumpstarter-router |
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do not modify any helm, it has been deprecated.
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Agreed -- all Helm chart changes have been reverted (commit b1a519a). Only the operator Go code is modified now.
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Acknowledged -- all Helm chart changes were reverted in commit b1a519a. Only the operator Go code path is modified.
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Acknowledged -- reverted all Helm chart changes in commit b1a519a.
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Agreed -- the Helm chart changes have been reverted in commit b1a519a. Only operator-managed RBAC is modified now.
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Acknowledged -- all Helm chart changes have been reverted. The PR now only touches the operator Go code path.
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Addressed -- all Helm chart modifications have been removed from this PR. Only the operator-managed RBAC code is modified now.
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Acknowledged -- all Helm chart changes have been reverted in commit b1a519a. Only the operator Go code is modified.
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Addressed in b1a519a -- all Helm chart changes have been reverted.
Status UpdateReview feedback addressed
CI failures analysisThe following CI jobs failed:
The Helm chart revert should resolve the helm-path failures. The operator-path changes (separate |
Root cause of CI failureThe router pod ( The router's Fix
This maintains the security goal of separating the router SA from the controller SA (the router SA has far fewer permissions than the controller SA) while providing the minimum permissions the router actually needs. |
CI Fix: Router ServiceAccount needs K8s API accessRoot cause: The router process calls Fix (commit 93ce272):
This maintains the security separation goal — the router SA has far fewer permissions than the controller SA — while granting the minimum permissions the router actually needs to function. |
| APIGroups: []string{""}, | ||
| Resources: []string{"secrets"}, | ||
| Verbs: []string{"get", "list", "watch"}, | ||
| }, | ||
| }, |
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does the router really need to get/list/watch secrets? why?
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Good catch -- it does not. The router only reads a ConfigMap via LoadRouterConfiguration(). Secrets access has been removed from the router Role (commit cdf6b75). The router Role now only grants get/list/watch on configmaps.
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Good catch -- you're right, the router has no need for secrets access. Removed in commit cdf6b75. The router Role now only grants get/list/watch on configmaps.
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Good catch -- the router does not need secrets access. That permission has been removed in commit cdf6b75. The router Role now only grants read access to configmaps (get/list/watch).
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Good catch. The router no longer has access to secrets. The dedicated router Role now only grants read-only access to configmaps (get, list, watch on configmaps). Secrets access remains exclusively with the controller-manager ServiceAccount.
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Good catch. The router no longer has access to secrets -- the router role now only grants read-only access to configmaps (get, list, watch).
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Good catch -- the router does not need secrets access. This was removed in commit cdf6b75. The router Role now only grants get/list/watch on configmaps, which is the minimum needed for config loading via the K8s API.
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Good catch -- the router does not need secrets access. Removed in cdf6b75. The router Role now only grants read-only access to configmaps (get, list, watch).
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Review Status UpdateAll review feedback has been addressed:
The PR is ready for review. The operator deployment path now creates a separate |
Addressing review feedback from @raballewPushed f1a546e to fix the three comment nits:
Items acknowledged but deferred:
CI is all green (tests, e2e-test-operator, deploy-kind for both operator and helm paths all passing). |
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Addressing review feedback from @raballew (2nd round)Pushed 47d520a with two changes: 1. Unit tests for RBAC functions (HIGH)Added Factory functions (
Tests use the existing envtest infrastructure from 2. Remove noisy Info-level log (LOW)Removed the redundant |
Fix plan for 3rd round review feedbackTwo actionable changes from @raballew's latest review:
CI failure ( |
Addressing review feedback from @raballew (3rd round)Pushed 74a9e9e with two changes: 1. Log entry for absent RoleBinding state (LOW)Added 2. ResourceVersion assertion in no-op test (LOW)The no-op test now captures ResourceVersion before and after reconciliation and asserts they are equal, proving no unnecessary API write occurred. Acknowledged (no code change needed):
CI note:The |
Re-review RequestHi @raballew! 👋 I've reviewed all the feedback from your latest review round (April 15th). All actionable items have been addressed in commit 74a9e9e: Implemented ✅
Acknowledged (with rationale) ✓
All CI checks are passing. Would you be able to re-review when you have a chance? Thanks! 🙏 |
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Gentle ping @raballew -- all feedback from your April 15th review has been addressed (delete-and-recreate for immutable RoleRef, unit tests, log.Error for transient absent state, ResourceVersion assertion in no-op test, etc.) and CI is fully green. Would you have a chance to re-review when convenient? Happy to address any further feedback. Thanks! |
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Hi @raballew, Following up on the pending review - all feedback from your April 15th review has been addressed in commit 74a9e9e:
All CI checks are passing. Is there anything else needed to move this forward, or can we proceed with merging? Thanks for your continued review! |
Status UpdateAll review feedback from @mangelajo and @raballew has been addressed in the latest commits. Here is a summary: Addressed in code
Acknowledged (informational / follow-up items)
CI StatusAll checks are passing (e2e tests, lint, build, deploy-kind for both operator and helm paths). This PR is ready for re-review. @raballew could you take another look when you get a chance? |
PR Review Status - May 24, 2026Hi @raballew, All feedback from your review rounds (April 13-15) has been fully addressed: Implemented Changes
Also Addressed (earlier rounds)
CI StatusAll checks passing (e2e tests, lint, build, deploy-kind for both operator and helm paths). The PR is ready for re-review. Could you please take another look when you have a chance? Thanks for the thorough reviews! 🤖 Automated by ambient-code bot |
Review feedback statusAll feedback from reviewers has been addressed in the current code. Here is a summary: @mangelajo's feedback (April 8)
@raballew's feedback (April 13-15)
CI StatusAll CI checks are passing (e2e tests, lint, build, unit tests). This PR is ready for re-review. |
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@ambient-code rebase onto main |
The controller and router previously shared the same `controller-manager` ServiceAccount, giving the router unnecessary cluster-wide secrets CRUD access. This creates a dedicated `router-sa` ServiceAccount with no RBAC bindings and `automountServiceAccountToken: false`, following the principle of least privilege. Fixes #351 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The router process needs Kubernetes API access at startup to load its configuration from a ConfigMap (via ctrl.GetConfigOrDie() and LoadRouterConfiguration). Setting AutomountServiceAccountToken: false on both the ServiceAccount and pod spec prevented the router from authenticating, causing the pod to crash and never become ready (180s timeout in CI). Changes: - Remove AutomountServiceAccountToken: false from router ServiceAccount and pod spec so the token is mounted - Add a minimal router Role granting read-only access to configmaps and secrets (the only resources the router needs) - Add a RoleBinding to bind the router Role to the router ServiceAccount This maintains the security goal of separating the router SA from the controller SA while granting only the minimum permissions needed. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The router only reads a ConfigMap via LoadRouterConfiguration() and does not access any secrets. Remove the secrets PolicyRule from the router Role per review feedback. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Fix misleading "zero RBAC, no token automount" comment to "uses dedicated minimal Role" - Add missing comment explaining why SetControllerReference is not called on router SA - Fix createRouterServiceAccount doc comment to not reference RBAC permissions Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Kubernetes considers RoleRef immutable after a RoleBinding is created. Replace the CreateOrUpdate pattern for RoleBindings with a dedicated reconcileRoleBinding helper that detects RoleRef changes and uses delete-and-recreate instead of in-place update. This applies to both the controller and router RoleBindings. Addresses review feedback from @raballew. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add unit tests for router RBAC factory functions (createRouterServiceAccount, createRouterRole, createRouterRoleBinding) and reconcileRoleBinding covering all four code paths: create, delete-and-recreate, update, and no-op. Remove redundant Info-level log in the "unchanged" path of reconcileRoleBinding to reduce log noise during steady-state reconciliation. The V(1) debug log is sufficient. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
…op test - Add log.Error when SetControllerReference fails after RoleBinding deletion, making the absent RoleBinding state traceable in operator logs - Assert ResourceVersion is unchanged in the no-op reconciliation test to prove no unnecessary API write occurred Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Rebased onto main (force-pushed The Helm chart files were deleted on
Result: 7 clean commits, only touching operator code ( |
… for reconcileRBAC - Add missing `delete` verb to the kubebuilder RBAC marker for rolebindings, fixing a potential 403 Forbidden when the delete-and-recreate path in reconcileRoleBinding runs at runtime - Regenerate config/rbac/role.yaml via `make manifests` - Add integration test for reconcileRBAC that verifies all six RBAC resources (controller SA, router SA, controller Role, router Role, controller RoleBinding, router RoleBinding) are created with correct names, permissions, and bindings - Add idempotency test verifying no unnecessary API writes on second reconciliation Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Addressing review feedback from @raballew (4th round)Pushed b4c96ee with fixes for all three review comments: 1. Missing
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Fix plan: extract generic reconciliation helpersAddressing @raballew's feedback to reduce duplication in What will change:
What will NOT change:
Expected reduction: ~100 lines of duplicated reconciliation logic replaced by two ~25-line helper methods. |
Reduce duplication in rbac.go by extracting shared reconciliation logic for ServiceAccount and Role resources into dedicated helper methods, mirroring the existing reconcileRoleBinding pattern. This eliminates ~60 lines of repeated code without changing any behavior. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Refactoring complete: generic reconciliation helpers extractedPushed 35c3695 addressing @raballew's feedback to reduce duplication in Changes
All 4th round review items addressed
CI is fully green on the latest commit. |
2 participants
Summary
router-saServiceAccount with minimal RBAC permissions for router workloads in the operator deployment path onlycontroller-managerSA with full RBAC (secrets CRUD, CRD access, leader election)Fixes #351
Changes
Operator (only deployment path modified)
rbac.go: AddedcreateRouterServiceAccount()andcreateRouterRole()factory functionsrbac.go: ExtractedreconcileServiceAccount()andreconcileRole()generic helpers to eliminate duplication between controller and router reconciliation pathsrbac.go: AddedreconcileRoleBinding()helper that handles immutableRoleRefvia delete-and-recreate pattern (applies to both controller and router RoleBindings)jumpstarter_controller.go: UpdatedcreateRouterDeployment()to use{name}-router-saget/list/watchonconfigmapsonly (no secrets access)Tests
rbac_test.go: Unit tests for factory functions (createRouterServiceAccount,createRouterRole,createRouterRoleBinding) andreconcileRoleBindingcovering all four code paths (create, no-op, update, delete-and-recreate)rbac_test.go: Integration test forreconcileRBACverifying all six resources are created with correct names, permissions, and bindingsHelm chart
Review feedback addressed
secretspermission from router Role (commit 8de3816) - router only reads ConfigMapsRoleRef(commit 4a87d67) - per @raballew's reviewreconcileRoleBinding(commit 47d520a) - per @raballew's reviewreconcileRoleBindingunchanged path (commit 47d520a) - per @raballew's reviewreconcileServiceAccountandreconcileRolehelpers to reduce ~60 lines of duplication (commit 35c3695) - per @raballew's reviewTest plan
router-sawith minimal RBACcontroller-managerSAGenerated with Claude Code