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hive-forge: the controller-token mint writes straight to the store, and the on-disk token goes

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`forgejo-swarm-controller-account`, in the forge's container, now puts
the swarm-controller's forge token into the swarm secret store itself,
under the forge publisher's leaf. The container already receives that
leaf as nspawn system credentials for its journal forwarder; the mint
loads the same three. The token reaches bao on stdin (`value=-`) and
the forge's API through a header file, never as an argument, and never
touches disk.

The mint's guard is a marker holding the published token's name, at
/var/lib/forgejo/swarm-controller-token-name, written last: after the
put, and after every other `swarm-controller-boot-*` token of the
account is revoked through forgejo's admin API, authenticated as the
new token. So a put that failed, or a marker lost while the store kept
an older token, leaves no live token behind once a mint completes. The
mint logs in to the store and checks that the account is a site admin
before it mints, so a store that is down or an account the admin API
would refuse mints nothing on each retry. Failures retry under
store-retry; forgejo does not wait for the mint. No bao read and no
grant change: the forge publisher keeps create/update on the token.

Removed: the host's `swarm-bao-forge-publisher` service and path unit,
which read the token file through the container's root, and their
entries in the store and policy ordering glue. The forge publisher's
policy unit stays; `swarm-bao-forge-oidc` still uses the leaf.

On deploy, an existing forge host has no marker, so the mint runs once:
it mints a new token, publishes it, revokes the old one, and deletes
the old /var/lib/forgejo/swarm-controller-token. The controller's next
forge call gets a 401, re-reads the store and carries on.
This commit is contained in:
atlas 2026-10-16 14:39:19 +02:00 • committed by mara
commit 141be16c6d
14 changed files with 294 additions and 261 deletions
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2
docs/swarm/credentials.md
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@ -62,7 +62,7 @@ of the cell says how.
| `swarm/agents/<agent>/matrix-recovery/<account>` | `swarm-controller`, a random passphrase for every account listed under the agent's `matrix/`, in a five-minute pass | the agent container itself, under the certificate its hive passed in, when `hive-matrix-daemon` brings the account up | ❌ never replaced: the account's server-side key backup opens only with the passphrase it was enabled with, so the pass writes only to an empty path | ❌ read when the account comes up; an account whose passphrase lands later turns backup on at the next daemon start |
| `swarm/controller/swarm-controller/matrix/appservice-token` | `swarm-matrix-ctl`, inside the `hive-matrix` container, once | `swarm-controller`, under its own certificate | ❌ `swarm-matrix-ctl` mints it once; the container keeps its copy and republishes it when the store's differs | ✅ the controller reads it on every five-minute matrix pass |
| `swarm/controller/swarm-controller/oidc/client` | authelia, at its first boot; `swarm-secret-publish` copies it in | `swarm-controller`, under its own certificate, at start and on refusal | ❌ authelia mints it once. A re-mint is republished by `swarm-secret-publish`'s path unit | ✅ read at start and held in memory; read again when authelia refuses it, at most once per backoff of 5 s doubling to 5 min while the store holds the refused value |
| `swarm/controller/swarm-controller/forge/token` | the forge, inside the `hive-forge` container, once; `swarm-bao-forge-publisher` on the forge's host copies it in under its own certificate, with a write-only grant | `swarm-controller`, under its own certificate, at start and on refusal | ❌ the forge mints it once and keeps its copy in the container; the publisher writes that copy each time the forge container starts and each time the mint writes the file | ✅ the controller reads it at start, and in the background with backoff until it first finds it. When the forge answers 401 it reads it again and sends the request once more with the new token, at most once per backoff of 5 s doubling to 5 min while the store holds the refused value |
| `swarm/controller/swarm-controller/forge/token` | the forge's `forgejo-swarm-controller-account`, in the `hive-forge` container, once, under the forge publisher's certificate with a write-only grant; it then revokes its earlier tokens | `swarm-controller`, under its own certificate, at start and on refusal | ❌ the forge mints it once and keeps only the token's name in the container, at `/var/lib/forgejo/swarm-controller-token-name`; deleting that file mints a new token on the unit's next start | ✅ the controller reads it at start, and in the background with backoff until it first finds it. When the forge answers 401 it reads it again and sends the request once more with the new token, at most once per backoff of 5 s doubling to 5 min while the store holds the refused value |
| `swarm/controller/swarm-controller/grafana/token` | `swarm-bao-grafana-controller-token` on Grafana's host, under Grafana's certificate: a token for the `swarm-controller` Viewer service account, minted with Grafana's admin password | `swarm-controller`, under its own certificate, on the first `/api/alerts` request and again when Grafana refuses it | ✅ a timer starts the unit again 10 minutes after each run; it keeps a stored token Grafana accepts, and mints a new one when Grafana answers 401 or the store holds none | ✅ the controller holds the token in memory; when Grafana answers 401 it reads the store once more and retries the request |
| `swarm/agents/<agent>/bao-mtls` | the store's agent PKI mount (`deploy.bao.agentPkiMountPath`), which generates the key, at `swarm-controller`'s request at agent creation | `hive-c0re`, under the hive's own certificate, when it writes the agent's container config; then `hive-agent-bao-identity` in the agent container, under the leaf it holds | ✅ `swarm-controller`'s five-minute pass re-issues a live agent's leaf once it's past half its validity (45 of 90 days, read from the certificate itself) | ✅ `hive-agent-bao-identity` re-reads it every 10 minutes and swaps a new leaf into `/run/hive-agent-bao-identity/`, which every store login in the container presents. It reads under the leaf it holds, so it renews only while that leaf is valid |
| `swarm/agents/<agent>/queue` | `swarm-controller`, at agent creation | `hive-agent` in the agent container, under the agent's own certificate, held in memory — the identity it presents to the swarm queue, naming that one agent rather than its hive; `swarm-logs` in the agent container, under the same certificate, on every query, as the bearer it presents at the log store; `swarm-nats-auth` and `swarm-logs-auth`, each under its own certificate, to check a presented secret | ✅ `swarm-controller`'s five-minute pass re-mints a live agent's secret once it's 45 days old by `minted_at` on the stored object; a secret with no `minted_at` gets one stamped, value unchanged. The pass skips agents declared `Destroyed` — declaring an agent destroyed deletes every version of the path instead, the undo of the mint rather than another one | ✅ `hive-agent` reads the path before its first connect and again on every reconnect attempt, so a reconnect after a re-mint presents the new secret. An open connection keeps the secret it connected with; after a revocation the agent keeps retrying under the queue client's backoff. `swarm-logs` reads it on every query and once more after a 401. `swarm-logs-auth` keeps granting a secret it verified for `deploy.victorialogs.authVerdictTtl` (60 s by default) without reading the path, so a replaced or deleted secret still works at the log store for up to that long |