No Rust ever minted a secret_id; approle was dead attack surface. The
bootstrap step's check-then-enable case becomes check-then-disable: if
approle is mounted, `bao auth disable approle`; otherwise a no-op.
Disabling costs `delete`+`sudo` on `sys/auth/approle`, not
`create`/`update` — verified against `bao auth disable -output-policy`
on a live dev store. The bootstrap policy grant is narrowed to match.
nix/module-eval/bao-grants.nix pins the new shape: the bootstrap policy
may disable approle, and the granter's role unit never enables it.
The bao UI at bao-ui.<swarm> took a raw store token and nothing else.
It now offers an OIDC tab: authelia's `admins` group logs in and lands
on `swarm-operator-viewer`, which is list+read on `secret/metadata/*`
and nothing under `secret/data/` or `sys/`.
- authelia registers an interactive client `swarm-bao-ui`
(glue-bao-ui-oidc-client.nix) with redirect
`https://bao-ui.<swarm>/ui/vault/auth/oidc/oidc/callback`; the secret
publisher carries its secret to
`secret/swarm/services/swarm-bao-ui/oidc/client`.
- `swarm-bao-granter-role` (bootstrap token) enables the `oidc` auth
mount with listing visibility `unauth`, asked before attempted like
cert/approle; `bao-bootstrap-policy.hcl` gains `sys/auth/oidc`.
- The granter's policy gains `auth/oidc/config`, `auth/oidc/role/swarm-*`
and read on that one secret leaf. It still holds no `sys/auth`.
- New granting unit `swarm-bao-operator-viewer-policy` writes the viewer
policy, and once the granter may configure `auth/oidc/config` (checked
through `sys/capabilities-self`), writes the mount's config from the
published secret and the role binding `groups=admins` to the viewer.
Before the bootstrap step re-runs it writes the policy, logs the step
and exits 0.
Route (a) per mara on #4775: enabling the auth method stays a
bootstrap-token step, re-run once on the live store.
module-eval pins the viewer policy's single metadata stanza, that the
granter's policy has no sys/auth path, the oidc enable in the bootstrap
unit, the exit-0 path, the config/role contents, and the client
registration + publish.
Every unit that writes a bao policy or cert-auth role ran only while the
operator-placed bootstrap token existed, and skipped silently otherwise.
The token lives 24h, so on any real swarm a PR adding or changing a grant
deployed with its unit skipped, and each one needed a manual token refresh
(plus a root `bao policy write` when it added a path).
A `bao-granter` principal now writes them. Its leaf is minted by
swarm-bao-pki on the store host (0600 root, never copied off it), and its
policy covers `swarm-*` policies, `swarm-*` cert-auth roles and
`pki/roles/swarm-*` by glob, plus the mount and services-root paths the
controller's unit already used. All ten granting units
(controller, secret-publisher, matrix-ctl, matrix-token, queue-agent,
grafana-oidc, otel-oidc, forwarder-oidc, services-issuer, nats-tls) log in
with it instead of reading the token. They keep the 2880 x 30s retry, now
require swarm-bao-pki, and when the store refuses the granter they fail
and print the one-time step instead of skipping.
swarm-bao-granter-role is the one unit left on the token. It enables the
auth mounts (moved out of the controller's unit) and writes the granter's
own policy and role. The bootstrap policy is renamed `bao-bootstrap` and
shrinks to those five stanzas; it is shipped at
/etc/hyperhive/bao-bootstrap-policy.hcl. The old name `swarm-bootstrap`
matched the granter's own `swarm-*` glob.
The granter's CN joins certAuthCns, so no hive can be named into its role.
An assertion keeps both pki role names under `swarm-`. With no client CA
the granting units no longer render, and a warning says so.
module-eval pins the granter's policy stanza by stanza, what it cannot
reach, that every call a granting unit makes is granted, and that only
swarm-bao-granter-role reads the token.
Refs #4704
