feat(k8s): add namespace-per-workspace support (RFC 0011 Phase 3) - #2656
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derekwaynecarr wants to merge 4 commits into
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feat(k8s): add namespace-per-workspace support (RFC 0011 Phase 3)#2656derekwaynecarr wants to merge 4 commits into
derekwaynecarr wants to merge 4 commits into
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Implement three workspace namespace modes for the Kubernetes compute driver: shared (default, preserves current single-namespace behavior), managed (auto-creates/deletes namespaces per workspace), and operator (pre-provisioned namespaces with dynamic discovery via label selector or drop-in allowlist file). Key changes: - WorkspaceMode enum and namespace resolution in driver config - Managed namespace lifecycle with ServiceAccount and OpenShift SCC annotation propagation - Cluster-wide sandbox CR watchers for managed/operator modes - NamespaceValidator (Exact/Prefix/Allowlist) for SA token auth - Workspace-aware credential secret storage - Helm ClusterRole for multi-namespace RBAC - Gateway config, architecture, and reference docs Signed-off-by: Derek Carr <decarr@redhat.com>
derekwaynecarr
requested review from
a team,
maxamillion and
mrunalp
as code owners
August 7, 2026 21:40
derekwaynecarr
marked this pull request as draft
August 7, 2026 21:40
Add end-to-end tests for managed and operator workspace modes introduced in RFC 0011 Phase 3. The managed mode tests verify namespace creation with correct labels, ServiceAccount provisioning, sandbox CR placement, and namespace survival with remaining sandboxes. The operator mode tests verify rejection of unlabeled and nonexistent namespaces. The positive operator path (sandbox in labeled namespace) is known to fail due to an RBAC gap and will be addressed separately. Also fixes Helm 4 compatibility: move SPDX license headers inside conditional guards in 8 chart templates to prevent empty comment-only documents, and fix a trailing whitespace trimmer in clusterrole.yaml that concatenated the license header with apiVersion. Adds cleanup sweep in with-kube-gateway.sh to remove managed and operator namespaces before Helm uninstall, and mise tasks for running each mode independently. Signed-off-by: Derek Carr <decarr@redhat.com>
Spawn a background kube::runtime::watcher in the K8s driver that watches namespaces matching the configured label selector and populates the OperatorNamespaceAllowlist at runtime. The driver owns the allowlist and exposes its Arc so the server can share the same set with the SA token authenticator. create_sandbox now gates pod creation on the allowlist in operator mode — workspaces whose namespace is not yet labeled are rejected at resource render time rather than silently proceeding. Workspace lifecycle itself is unaffected; only sandbox (resource) creation is gated. Signed-off-by: Derek Carr <decarr@redhat.com>
derekwaynecarr
marked this pull request as ready for review
August 8, 2026 19:15
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/ok to test 628a4b7 |
Close the fail-open gap in operator mode when only operator_namespace_file is configured: the allowlist is now created unconditionally in operator mode (fail-closed from startup). Implement the namespace file watcher using the notify crate, following the TLS hot-reload pattern (parent-directory watch, 1s debounce, ConfigMap symlink-swap safe). The file format is a JSON array of namespace name strings. Additional fixes from the 10-reviewer audit: - Change allowlist rejection from InvalidArgument to FailedPrecondition so callers know the request may succeed later once the namespace is provisioned. - NamespaceValidator::Allowlist now holds the OperatorNamespaceAllowlist newtype instead of a raw Arc<RwLock<BTreeSet>>, eliminating silent denial on RwLock poison. - Verify LABEL_MANAGED_BY and LABEL_GATEWAY_ID ownership before deleting a managed namespace. - Replace fixed 5s sleep in operator e2e test with a 30s poll loop. - Add Helm validation for workspaceMode values. - Fix Helm README type column and description for operator fields. - Add insert/remove methods to OperatorNamespaceAllowlist; label watcher now uses them instead of reaching through shared(). - Reject configs with both operator_namespace_label and operator_namespace_file set. Signed-off-by: Derek Carr <decarr@redhat.com>
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/ok to test 6a067bb |
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Summary
Implement three workspace namespace modes for the Kubernetes compute driver: shared (default, preserves current single-namespace behavior), managed (auto-creates/deletes namespaces per workspace), and operator (pre-provisioned namespaces with dynamic discovery via label selector or drop-in allowlist file).
Related Issue
Closes #2486
Changes
Key changes:
Testing
mise run pre-commitpassesChecklist