flex-auth's binding names system:serviceaccount:ops-warden:ops-warden, and that
ServiceAccount did not exist. deploy/kubernetes/caller-identity.yaml creates it
plus its namespace — no RBAC, automount off; it is never used to call the
Kubernetes API, only to be TokenReviewed. Applied to the railiance01 cluster.
Operator warden.yaml now uses caller_auth mode: command (kubectl create token,
audience flex-auth, 10m). Gate exits 0 live against a port-forward of the pin:
HTTP 200, effect=allow, decision:f3f7c88f9585582a.
The evidence is not that allow — warn allows anonymous callers too. It is that
the pin's "caller authentication warning" count held at 4 across two
authenticated runs. That is the ADHOC-2026-08-17-T01 condition.
Also gives the readiness probe a structurally complete context, so a deny means
the policy said no rather than the probe being malformed.
policy.enabled stays false. T05 waits on flex-auth setting callerAuth.mode:
enforce (their FLEX-WP-0016 T03).
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
flex-auth's flex-auth-ops-warden pin (FLEX-WP-0016) TokenReviews the caller and
binds resource.system: ops-warden to system:serviceaccount:ops-warden:ops-warden.
policy.py posted /v1/check with no Authorization header, so the pin logs
"caller authentication warning" and can only run callerAuth.mode: warn — which,
under ADHOC-2026-08-17-T01, is exactly what blocks policy.enabled: true.
- policy.caller_auth (none | file | env | command) + src/warden/caller_identity.py:
token resolved per call, never cached, written, or logged (ADR-0002)
- both check_sign_policy and check_fetch_policy attach the bearer header; an
unobtainable token fails closed rather than retrying anonymously
- scripts/check_policy_caller_identity.py: read-only gate, prints length and a
truncated fingerprint only, distinguishes 401 (audience/binding) from 403
- example config: caller_auth block, and flex_auth_url corrected — it pointed at
flex-auth.flex-auth.svc, a Service that does not exist
- WARDEN-WP-0031, PolicyGatedSigning caller-identity section and flip sequence
Default stays mode: none, so behaviour is unchanged until an operator opts in.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
