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hive-tls: skip the store root fetch on a hive with no store identity

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The `want_svc=0` root fetch presents `deploy.bao.clientCertFile`/
`clientKeyFile` to a listener that demands a client certificate. On a
hive with neither set, the handshake is refused every time, and
`swarm-services-cert` went from green to failed-and-retrying for 24h.

The branch is now chosen at eval: with no reader identity, the unit
logs that the store root was not staged and names the option, then
exits 0, and no fetch is rendered. A hive with an identity fetches as
before. `hivectl peer-config` already handles the absent file.

Refs #4588 (review c88774, point 2).
This commit is contained in:
atlas 2026-09-30 21:34:07 +02:00 • committed by mara
commit 56335b24c0
4 changed files with 72 additions and 34 deletions
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3
docs/swarm/ca.md
View file

@ -65,7 +65,8 @@ gateway can't serve a swarm service that runs behind another.
`/var/lib/hive-tls/swarm-services-root.pem` (0644), written beside the
leaf it signed and folded into `trust-bundle.pem`. A hive fronting no
swarm name asks for no leaf and reads the root alone, from the store's
`pki/ca/pem`. On the host running
`pki/ca/pem`, when it holds a store identity (`deploy.bao.clientCertFile`).
On the host running
the store it's also at
`/var/lib/swarm-bao-services-pki/services-root.pem`. That's the file to
hand a browser, and reading it needs no store login — which matters,

2
docs/swarm/secrets.md
View file

@ -45,7 +45,7 @@ neither is a renaming of the other.
| --------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| swarm root CA cert | `swarm-ca.nix` first-boot unit, when the operator sets `autoConfigure` | `/var/lib/swarm-ca/root.pem` | operator copies the **cert** in; it's public |
| swarm root CA key | same unit | `/var/lib/swarm-ca/root-key.pem`, `0600` | stays on whichever host holds it — see the constraint below |
| swarm-services root CA (cert + key) | `swarm-bao.nix`'s granting unit, inside the store's `pki` mount | the **key** never leaves the mount; the **cert** lands at `/var/lib/swarm-bao-services-pki/services-root.pem` (0644) and at `/var/lib/hive-tls/swarm-services-root.pem` on every hive | nothing to copy — every hive receives the cert with the leaf it asks the store for, or from `pki/ca/pem` where it fronts no swarm name |
| swarm-services root CA (cert + key) | `swarm-bao.nix`'s granting unit, inside the store's `pki` mount | the **key** never leaves the mount; the **cert** lands at `/var/lib/swarm-bao-services-pki/services-root.pem` (0644) and at `/var/lib/hive-tls/swarm-services-root.pem` on every hive | nothing to copy — every hive receives the cert with the leaf it asks the store for, or from `pki/ca/pem` where it fronts no swarm name and holds a store identity |
| authelia session, JWT and storage-encryption keys | authelia's first-boot unit, in-container | `/var/lib/authelia-swarm/{session,jwt,storage-encryption}.key` | generated in place; nothing outside that container reads them |
| authelia OIDC HMAC key | same unit | `/var/lib/authelia-swarm/oidc-hmac.key` | same |
| authelia OIDC issuer key (RSA) | same unit | `/var/lib/authelia-swarm/oidc-issuer.key` | same — relying parties verify against the **public** half at `/jwks.json` |