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Aleksei Sviridkin
37a91f98b8
Every catalog engine issues a per-release CA, but the object holding ca.crt usually holds a private key beside it (cert-manager's tls.key, CloudNativePG's ca.key), so granting a tenant read on it hands over key material too. Add a controller that publishes the trust anchor as one canonical, key-free Secret per release, "<release>.tenant-ca", holding only ca.crt. A chart declares the anchor by rendering a namespaced TenantProjection sentinel (internal.cozystack.io/v1alpha1) that names the source Secret and key. The controller rebuilds ca.crt from the parsed certificate DER rather than copying the source, refuses any value carrying private key material, and owns the projection by owner reference so a foreign Secret at the same name is never overwritten. No tenant RBAC grants any verb on internal.cozystack.io; a ValidatingAdmissionPolicy pins writes to helm-controller as defence in depth. The controller does not grant tenant read access — the lineage webhook does, from the ApplicationDefinition's spec.secrets. This side stamps the engine-agnostic internal.cozystack.io/tenant-ca label and forces a re-admission when those selectors change. Assisted-By: Claude <noreply@anthropic.com> Signed-off-by: Aleksei Sviridkin <f@lex.la>