| Filename | Latest commit message | Latest commit date |
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8cc7f90c98
A record written to stdout carries no priority, so journald files the whole stream at one level and the swarm log store shows `info` whatever level `tracing` gave it. Under a systemd unit the process's stdout already *is* the journal, so the fix is to speak the journal protocol directly and let each record carry its own severity. New `hive-log` crate holds the one sink chooser, called by `hive-c0re`, `hive-agent` and `swarm-controller`. It builds the same `EnvFilter` those binaries always built, then installs exactly one layer — never both, since a journald layer stacked on the `fmt` layer under a unit stores every record twice. The choice is an fstat compare, not a presence test: a child inherits `$JOURNAL_STREAM` even when its own stdout was redirected elsewhere, so the variable existing proves nothing. The crate parses `dev:inode` out of it and compares both numbers against an fstat of stdout, the descriptor the `fmt` layer writes to by default. No match, unset, or unparseable takes the `fmt` branch. A journald layer that fails to construct despite a match falls back to `fmt` and warns through it — a process must never fail to start because of its logger. |
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| .. | ||
| src | ||
| Cargo.toml | ||
| README.md | ||
swarm-controller
The swarm-level daemon. Where hive-c0re owns the agents on one host, this
owns what is true across hives — so a swarm runs one of them and most hives
leave it off.
Opt-in per host via services.hyperhive.deploy.swarm-controller.enable, which is
deliberately not derived from services.hyperhive.enable: turning it on is
a statement about swarm topology, not about whether hyperhive is installed.
What it does today
Serves one /health endpoint and holds no state.
That is the whole intent of the first slice. The point is to make the unit
real — service user, runtime and state directories, socket, nginx
reachability — so the swarm-level surfaces that follow have somewhere to land.
Inventing those surfaces before they are agreed would bake in a shape nobody
chose. See the hyperhive.swarm consolidation epic.
Why a unix socket, not a port
The hive-gateway's nginx is the only intended client and reaches the socket through a bind-mount. A listener that is never bound to an address cannot be reached from off-host by mistake.
The socket path is services.hyperhive.deploy.swarm-controller.socketPath, default
/run/swarm-controller/controller.sock, exported to the process as
SWARM_CONTROLLER_SOCKET.
⚠️ The socket's directory is its access control
The socket is 0666. It has to be: nginx runs as a different user and
connect(2) needs write. This matches how hive-c0re publishes the per-agent
sockets, and rests on the same argument — "the bind source dir is per-agent on
host so blast radius is unchanged."
What keeps that safe is that the directory holds one socket. So:
Never point
socketPathat a directory that carries anything else./run/hyperhiveabove all — it holdshost.sock, the host admin socket. Pointing nginx at that directory to reach this socket would put the admin socket within its reach too.
nginx is a host service, so nothing narrows what it can reach except the directory itself — that is the whole of the access control. A unit test pins the default path so a tidying edit fails instead of reviewing cleanly.
RuntimeDirectoryPreserve=yes and the daemon's stale-socket unlink on start are
a pair: preserving the directory without the unlink means bind fails with
EADDRINUSE after a restart.
Packaging
Built by the workspace derivation and extracted as its own package
(nix build .#swarm-controller). Deliberately not in nix/packages'
daemonBins — that list is the core stack and drives the bundle
services.hyperhive.c0re.package points at, so folding this in would put a
swarm-scoped service into every hive's closure.