fix: namespace-qualify cluster-scoped ClusterRoleBinding names - #349
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ClusterRoleBindings are not namespaced, but their names were derived from the CR name only (<crName>-<suffix>). Two Authorino instances sharing a CR name in different namespaces collided on a single binding and evicted each other's ServiceAccount under Server-Side Apply, breaking Kubernetes TokenReview/SubjectAccessReview and returning HTTP 401. Include the namespace in the binding name (<namespace>-<crName>-<suffix>) and best-effort delete the legacy-named bindings on reconcile. Add regression tests covering same-named instances across namespaces and the legacy binding migration. Fixes Kuadrant#348 Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Signed-off-by: KevFan <kevin_fan@hotmail.co.uk>
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Included review availability: Your plan includes up to 1 review per rolling hour; 0 remain after this review. 📝 WalkthroughWalkthroughClusterRoleBinding names now include the Authorino namespace. Reconciliation creates isolated bindings for same-named instances, removes owned legacy bindings, and preserves existing deletion handling. Tests cover collision prevention, migration, and name limits. ChangesNamespace-qualified ClusterRoleBinding isolation
Estimated code review effort: 3 (Moderate) | ~25 minutes Merge Risk: 🟡 Moderate · up to The change prevents most cross-namespace ClusterRoleBinding collisions, but a remaining name collision with legacy bindings could overwrite another instance’s authorization subject and disrupt access checks; merge should wait for this bounded migration risk to be addressed or explicitly accepted. Sequence Diagram(s)sequenceDiagram
participant AuthorinoReconciler
participant GetAuthorinoClusterRoleBinding
participant KubernetesAPI
AuthorinoReconciler->>GetAuthorinoClusterRoleBinding: pass Authorino namespace
GetAuthorinoClusterRoleBinding-->>AuthorinoReconciler: return namespace-qualified binding
AuthorinoReconciler->>KubernetesAPI: reconcile binding
AuthorinoReconciler->>KubernetesAPI: read legacy unqualified binding
KubernetesAPI-->>AuthorinoReconciler: return binding or NotFound
AuthorinoReconciler->>KubernetesAPI: delete legacy binding when ownership matches
Poem
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Inline comments:
In `@controllers/authorino_controller_test.go`:
- Around line 497-512: Update the reconciliation test around instanceA so it
changes a field propagated to binding A, rather than only adding the trigger
annotation, and wait with Eventually until binding A reflects that change. After
confirming binding A reconciled, retain the Consistently assertion that binding
B contains only subjectB.
In `@pkg/reconcilers/authorino_reconciler.go`:
- Around line 166-172: Update the legacy ClusterRoleBinding cleanup loop in the
reconciler so deletion is permitted only after confirming the binding carries
reliable operator-management identity, such as the expected owner or management
labels. Fetch and validate the existing object before calling Client.Delete; if
identity cannot be established, retain it and report the migration condition.
Keep the existing not-found handling and legacyName references in the cleanup
path.
In `@pkg/resources/k8s_util.go`:
- Around line 28-39: Update authorinoClusterRoleBindingName to encode or hash
namespace and crName unambiguously, while preserving the suffix and keeping the
resulting Kubernetes name within its length limit. Add a regression test
covering namespace “a-b” with CR name “c” versus namespace “a” with CR name
“b-c”, asserting distinct names.
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📒 Files selected for processing (6)
controllers/authorino_controller.gocontrollers/authorino_controller_test.gopkg/reconcilers/authorino_reconciler.gopkg/reconcilers/authorino_reconciler_test.gopkg/resources/k8s_rbac.gopkg/resources/k8s_util.go
The namespace-qualified ClusterRoleBinding name joined namespace, CR name and suffix with "-", which is ambiguous because "-" can also appear inside the namespace or CR name (e.g. namespace "a-b"/name "c" and namespace "a"/name "b-c" both yielded "a-b-c-<suffix>"). Colliding names would make two cluster-scoped instances share a single binding again, reintroducing the cross-instance eviction of Kuadrant#348. Separate namespace and CR name with "." instead. A Kubernetes namespace is a DNS-1123 label and cannot contain ".", so the segment before the first "." is always the namespace, keeping the name readable and unambiguous. Add a regression test for the a-b/c vs a/b-c collision and update the controller tests that reconstruct binding names to the new scheme. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Signed-off-by: KevFan <kevin_fan@hotmail.co.uk>
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Inline comments:
In `@pkg/resources/k8s_util.go`:
- Around line 40-41: Update authorinoClusterRoleBindingName to ensure the
generated ClusterRoleBinding name is at most 253 characters. Preserve the
namespace and clusterRoleBindingNameSuffix, truncating the variable name portion
as needed and appending a deterministic hash so long CR names remain uniquely
identifiable while retaining the suffix.
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controllers/authorino_controller_test.gopkg/resources/k8s_rbac_test.gopkg/resources/k8s_util.go
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- controllers/authorino_controller_test.go
Long Authorino CR names could produce a ClusterRoleBinding name exceeding the RFC 1123 DNS subdomain limit (253 chars). Truncate the CR name portion and append a deterministic hash so distinct long names stay unique, while always preserving the namespace prefix and suffix. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Signed-off-by: KevFan <kevin_fan@hotmail.co.uk>
The legacy ClusterRoleBinding cleanup deleted purely by name (<crName>- <suffix>). Since crName is tenant-controlled, a user could name an Authorino CR so the operator deleted a legacy binding owned by an instance in another namespace. Read each binding first and only delete it once confirmed to reference this instance's ServiceAccount; skip bindings that cannot be confirmed. A resourceVersion/UID precondition makes the delete atomic with the validating read. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Signed-off-by: KevFan <kevin_fan@hotmail.co.uk>
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Inline comments:
In `@pkg/resources/k8s_util.go`:
- Around line 47-75: Update reconcileResource before applying an existing target
binding to verify both the system-owned migration identity and the expected
ServiceAccount subject; on either mismatch, report a migration conflict and use
a collision-safe migration name instead of ForceOwnership on the conflicting
binding. Add a regression test covering the legacy team-a.gateway versus
namespace team-a and CR gateway collision, including preservation of the legacy
subject.
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controllers/authorino_controller_test.gopkg/reconcilers/authorino_reconciler.gopkg/resources/k8s_rbac.gopkg/resources/k8s_rbac_test.gopkg/resources/k8s_util.go
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- controllers/authorino_controller_test.go
A CR name may contain dots, so a legacy binding name (<crName>-<suffix>) can coincide with a new namespace-qualified name (<namespace>.<crName>-<suffix>), e.g. legacy CR "team-a.gateway" versus namespace "team-a"/CR "gateway". Document this migration-window caveat on authorinoClusterRoleBindingName and add unit tests covering the cleanup: it deletes a legacy binding owned by this instance, and preserves a colliding binding (and its subject) owned by another. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Signed-off-by: KevFan <kevin_fan@hotmail.co.uk>
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| // TODO: this method should return error | ||
| func (r *AuthorinoReconciler) cleanupClusterScopedPermissions(ctx context.Context, crNamespacedName types.NamespacedName, labels map[string]string) { |
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Nit: the finalizer path (this func) only constructs new-format binding names (<ns>.<crName>-<suffix>), so it wouldn't clean up legacy-named bindings if they still existed at CR deletion time.
In practice I guess this is a non-issue. Say one upgrades the operator – the controller restarts and reconciles all existing CRs before any deletion events are processed, so cleanupLegacyClusterRoleBindings will have already run by then.
Mentioning it just for awareness.
guicassolato
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Nice fix! Thanks @KevFan!
I left one minor nit about removing another piece of dead code – another leftover like reconcilers.UnboundAuthorinoServiceAccountFromClusterRole from back in the days when we used a singleton ClusterRoleBinding for all cluster-wide instances instead of dedicated ones.
Approving the PR regardless since it's a non-blocker.
Signed-off-by: KevFan <kevin_fan@hotmail.co.uk>
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ClusterRoleBindings are not namespaced, but their names were derived from the CR name only (-). Two Authorino instances sharing a CR name in different namespaces collided on a single binding and evicted each other's ServiceAccount under Server-Side Apply, breaking Kubernetes TokenReview/SubjectAccessReview and returning HTTP 401.
Include the namespace in the binding name (--) and best-effort delete the legacy-named bindings on reconcile. Add regression tests covering same-named instances across namespaces and the legacy binding migration.
Fixes #348 https://redhat.atlassian.net/browse/RHOAIENG-71904
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