IvanHunters
874ca9427f
Symmetric with the Grafana-side allowed_groups gate — round-3 review from lllamnyp on PR#3176 covered both surfaces, and #3044's original System-mode wiring shipped without this guard. The rationale is identical: audience binding stops REPLAY of a minted token across tenant kube-apiservers, but nothing stopped Keycloak from ISSUING a usable token to a caller outside the tenant. Absent a claim-side gate, any authenticated cozy-realm user could `kubectl oidc-login` against another tenant's cluster and land at `system:authenticated`. RBAC default-denies named-resource access, but `system:authenticated` still leaks discovery (kubectl api-resources, OpenAPI schemata) — tenant-alice could enumerate tenant-bob's cluster's CRD shape and built-in resource surface. Fix: add a CEL `claimValidationRules` entry to the rendered AuthenticationConfiguration (System mode only) that requires at least one of the release's four tenant-scoped Keycloak groups (`<namespace>-{view,use,admin,super-admin}`) to be present in the token's `groups` claim. The `has(claims.groups) &&` guard is required — CEL evaluation on a missing claim surfaces as HTTP 500 from the authenticator instead of a clean 401. CustomConfig mode is not touched — the tenant's own AuthenticationConfiguration is authoritative and the tenant is responsible for claim-side guards on their own issuer. Signed-off-by: IvanHunters <xorokhotnikov@gmail.com>
Cozystack
Cozystack is a free platform and framework for building clouds.
Cozystack is a CNCF Sandbox Level Project that was originally built and sponsored by Ænix.
With Cozystack, you can transform a bunch of servers into an intelligent system with a simple REST API for spawning Kubernetes clusters, Database-as-a-Service, virtual machines, load balancers, HTTP caching services, and other services with ease.
Use Cozystack to build your own cloud or provide a cost-effective development environment.
Use-Cases
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Using Cozystack to build a public cloud
You can use Cozystack as a backend for a public cloud -
Using Cozystack to build a private cloud
You can use Cozystack as a platform to build a private cloud powered by Infrastructure-as-Code approach -
Using Cozystack as a Kubernetes distribution
You can use Cozystack as a Kubernetes distribution for Bare Metal
Documentation
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Read the Getting Started section for a quick start.
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