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document squid's proxy credentials

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atlas 2026-10-28 13:07:15 +01:00 • committed by mara
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docs/swarm/credentials-reference.md
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@ -156,7 +156,8 @@ pieces fit, and the reasoning behind them, is in [`credentials.md`](credentials.
| the forge's copy of its OIDC secret | `swarm-bao-forge-oidc.service` reads it out of the swarm secret store under the forge publisher's leaf, wherever authelia runs | `/run/hive-forge-oidc/<id>.secret` on the host (tmpfs), bound into the forge container, handed to `forgejo-sso-source` through `LoadCredential` |
| the homeserver's copy of its OIDC secret | `swarm-bao-matrix-oidc.service` reads it out of the swarm secret store under matrix-ctl's leaf, wherever authelia runs | `/run/hive-matrix-oidc/<id>.secret` on the host (tmpfs), bound into the homeserver container, handed to tuwunel through `LoadCredential` |
| this hive's forge read token | `swarm-controller`, into the secret store at `swarm/hives/<hive>/forge/token`, for the `hive-<hive>` account; a pass at start and every five minutes re-mints a missing or stale token | `hive-c0re` reads it under the hive's own store identity, and copies it (account on the first line, token on the second) to `/run/hyperhive/forge-hive-token` (tmpfs, `0600` `hive-core`) for nix's `git`, which `hive-priv` also runs. Each `internal/meta` read and each boot rewrites the copy when it differs; where they differ after a rotation, a build that starts before the next read fails to authenticate, and a retry reads the new token |
| squid's users file | `hive-c0re` (`workers::squid_users`), every 30 seconds, from the proxy credentials of its agents and the self-check | `services.hyperhive.squid.usersFile` (`/var/lib/hive-squid/users`, `hive-core:squid`, `0640`): `<user>:<hash>` lines, SHA-512 crypt hashes only, renamed into place when it changed. `systemd-tmpfiles` creates it empty so squid's helper never sees a missing file. A hive whose agents have no credential yet (an older controller) has an empty file: every login fails and no agent sends a credential and squid doesn't read the file yet, so no traffic changes |
| squid's users file | `hive-c0re` (`workers::squid_users`), every 30 seconds, from the proxy credentials of its agents and the self-check | `services.hyperhive.squid.usersFile` (`/var/lib/hive-squid/users`, `hive-core:squid`, `0640`): `<user>:<hash>` lines, SHA-512 crypt hashes only, renamed into place when it changed. `systemd-tmpfiles` creates it empty so squid's helper never sees a missing file. A hive whose agents have no credential yet (an older controller) has an empty file: every login fails and the self-check reports `ok=false`; no agent sends a credential, so no traffic changes |
| the squid self-check's password | `swarm-controller` mints `swarm/hives/<hive>/squid-selfcheck`; `squid-selfcheck-credential` (root, every 10 minutes) reads it as the hive | `/run/credstore/hive-squid.selfcheck` (tmpfs, root, `0400`), imported by `squid-selfcheck.service` as a systemd credential and handed to `curl` on its stdin. Missing, or different from the users file: the self-check logs `credential=absent` or a 407 and fails, and nothing else breaks |
### Store identities, one per principal