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feat(spiffe): socket credential handler for Workload API (RFC UAA-SPIFFE-001)#136
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feat(spiffe): socket credential handler for Workload API (RFC UAA-SPIFFE-001)#136rkoster wants to merge 1 commit into
rkoster wants to merge 1 commit into
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Deliver the SPIFFE workload socket into app containers. SpiffeSocketHandler bind-mounts the host socket directory read-only at /run/spiffe and exports SPIFFE_ENDPOINT_SOCKET so go-spiffe / spiffe-helper workloads discover it automatically. Wired into the cred-manager fan-out alongside instance identity; dormant until SpiffeSocketDir is configured.
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Summary
Adds a SPIFFE socket credential handler to the Diego executor so app
containers can reach the per-cell SPIFFE Agent's Workload API.
When
executor.spiffe_socket_diris configured, the executor bind-mounts thathost directory read-only into every app container at
/run/spiffeandinjects
SPIFFE_ENDPOINT_SOCKET=unix:///run/spiffe/workload.sock. Workloads thenuse the standard SPIFFE Workload API (
FetchJWTSVID) to obtain a JWT-SVID mintedby UAA.
Key changes
depot/containerstore/spiffe_socket_handler.go(+ tests) — new credential handlerinitializer/initializer_garden.go— register the handler, gated onconfig.SpiffeSocketDirdepot/depot.go— wire the handler into the container lifecycleContext
Part of RFC UAA-SPIFFE-001 — UAA as a SPIFFE Identity Server for Cloud
Foundry — a POC in which UAA issues offline-OIDC JWT-SVIDs to CF apps.
Cross-repo dependencies
spiffe-agentbranch), which shipsthe SPIFFE Agent sidecar (Plan B1) and creates the shared socket directory.
spiffe-signer).Status
Draft / POC. End-to-end verified on a live bosh-lite CF deployment: a test app
fetched a valid RS256 JWT-SVID
(
spiffe://<trust-domain>/cf/org/.../space/.../app/.../process/web) over theinjected socket.