hyperhive/nix/host-modules/swarm-required-services.nix
atlas 585269b8a3 deploy: rename swarm.enableRequiredServices to deploy.allSwarmServices
Both halves of the old name were wrong about the subject. The services
are required of the SWARM, not of the host, and the option says whether
THIS host runs them — so it described the wrong thing and sat in the
namespace that has to be identical on every host. The new name is mara's
own phrasing of what it means: "deploy all swarm level services on this
host".

mkRenamedOptionModule carries existing configs, read-side references
included, so this warns rather than failing to evaluate.

Three sites were not just the identifier:

- local-defaults.nix set it inside `config.services.hyperhive.swarm =
  { … }`. It moves out as a path beside the other deploy.* setter rather
  than into a second `deploy = { … }` attrset — the warning that file
  already carries about `swarm` applies to any second definition of the
  same parent.
- swarm-required-services.nix bound only `swarmCfg`, now unused; it binds
  and reads `deployCfg`.
- Two comments in that file described a half-migrated state, where the
  switch asserted some `swarm.*.enable` toggles and some `deploy.*` ones.
  Every one of them has been `deploy.*` for several slices now.
2026-08-30 20:12:16 +02:00

96 lines
4.4 KiB
Nix

# "The swarm-wide services run HERE."
#
# A swarm has one forge, one matrix, one SSO. This says this host is
# where they live, and asserts the per-service `enable`s that follow —
# the same mode-not-default shape as ./local-defaults.nix, one tier down.
#
# Only the *optional* services derive. The forge has no `enable` to
# assert, because it is not optional — it is the canonical store for the
# meta flake and every agent's config repo, so it deploys with hyperhive
# itself.
{
lib,
config,
...
}:
let
deployCfg = config.services.hyperhive.deploy;
in
{
options.services.hyperhive.deploy.allSwarmServices = lib.mkOption {
type = lib.types.bool;
default = false;
example = true;
description = ''
Host the swarm's shared services on this hive. The services that
exist once per swarm rather than once per hive and are *optional*
the matrix homeserver, the SSO provider, the queue, the metrics
and log stores have their toggle asserted from this, so a
swarm's service host is declared in one place.
Every toggle it asserts is a {option}`services.hyperhive.deploy.*`
one, because "does THIS host run it" is a per-host decision which
is the same reason this option is a `deploy.*` one itself. See
./deploy.nix.
The forge is swarm-wide too but has nothing to assert: it is the
canonical store for the meta flake and every agent's config repo,
so it deploys with hyperhive itself and is not optional.
`services.hyperhive.enableAllLocalDefaults` turns this on as part
of the all-on-one-box mode. Set it directly to run the swarm's
services on a host that is not otherwise all-local a dedicated
services box with hives elsewhere is exactly that shape.
With it off, this hive is a *client* of those services: it still
configures how to reach them, it just doesn't run them.
'';
};
# Same precedence reasoning as ./local-defaults.nix: fills in for an
# operator who hasn't spoken, yields to one who has.
#
# Everything derives under `deploy.*` now, because "does THIS host run
# it" is a per-host decision and `swarm.*` has to be identical on every
# host. Same switch, same rule, one attribute path.
config.services.hyperhive.deploy.matrix.enable = lib.mkDefault deployCfg.allSwarmServices;
# The collector that feeds the pair above (note: no `swarm.` prefix,
# this is ./otel.nix's existing per-hive option).
config.services.hyperhive.otel.enable = lib.mkDefault deployCfg.allSwarmServices;
# The rest of the shared services, from the same switch and for the same
# reason.
#
# authelia: a swarm has one SSO provider, and this says it lives here.
# With it off the hive is a *client* — `swarm.authelia.url` still points
# at whoever runs it.
config.services.hyperhive.deploy.authelia.enable = lib.mkDefault deployCfg.allSwarmServices;
# The queue. Same rule: once per swarm, optional.
config.services.hyperhive.deploy.nats.enable = lib.mkDefault deployCfg.allSwarmServices;
# The swarm collector that feeds the metrics pair, and the only tier
# holding the upstream credential. ⚠️ NOT the per-hive collector below,
# which every hive runs.
config.services.hyperhive.deploy.swarm-otel.enable = lib.mkDefault deployCfg.allSwarmServices;
# The metrics pair, deriving together on purpose: a store with no UI is
# unreadable and a UI with no store is empty, so there is no sensible
# deployment that takes one and not the other from this switch. An
# operator who wants exactly one still sets it directly, which
# `mkDefault` allows.
config.services.hyperhive.deploy.victoriametrics.enable = lib.mkDefault deployCfg.allSwarmServices;
config.services.hyperhive.deploy.grafana.enable = lib.mkDefault deployCfg.allSwarmServices;
# The log store, from the same switch for the same reason as the rest: a
# hive that is not the service host is a *client* of it, not a second one.
config.services.hyperhive.deploy.victorialogs.enable = lib.mkDefault deployCfg.allSwarmServices;
# The secret store. Once per swarm and optional, so it belongs to the
# same switch: a hive that does not run it is a *client*, reading its
# own secrets from whoever does. `mkDefault` is what keeps the store
# placeable on a host of its own — it can be set directly here and
# turned off wherever this switch happens to be on.
config.services.hyperhive.deploy.bao.enable = lib.mkDefault deployCfg.allSwarmServices;
}