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hyperhive/nix/host-modules/glue-controller-oidc-client.nix
atlas 1219091788 glue: the controller's authelia and otel environment moves out of the controller module
The authelia and swarm-otel co-location reads (swarm-controller.nix
autheliaEnv, otelEnv) move into glue-controller-env.nix.
2026-10-14 10:15:29 +02:00

48 lines
2 KiB
Nix

# Glue: register the swarm controller as an OIDC client wherever authelia runs.
#
# ONE PAIRING PER FILE — swarm-controller ← authelia, and nothing else. Deleting
# this leaves a controller whose token requests authelia answers with a 401, and
# no minted secret for swarm-secret-publish to put in the store.
#
# ⚠️ Gated on authelia being HERE, and NOT on this host running the controller.
# A client is a row in THIS host's provider config, so it is declared where that
# config is rendered; ./swarm-controller.nix's `config` hangs off
# `deploy.swarm-controller.enable`, which answers a question about a different
# host. Same shape as ./glue-grafana-oidc-client.nix.
#
# Registered whether or not the swarm runs a controller: nothing in `swarm.*`
# records that, so the cost of a swarm without one is one unused client and one
# unused minted secret.
{
lib,
config,
...
}:
let
hyperhiveCfg = config.services.hyperhive;
deployCfg = hyperhiveCfg.deploy;
queueClientId = hyperhiveCfg.swarm.controller.queueClientId;
in
{
config = lib.mkIf deployCfg.authelia.enable {
# One declaration, two readers: the id is the read-only option the
# controller authenticates under, so a mismatch cannot be introduced here.
services.hyperhive.swarm.authelia.oidc.clients = [
{
id = queueClientId;
description = "HyperHive swarm controller";
# `client_credentials`: a daemon authenticating as itself, with nobody
# to redirect. Declared rather than inferred from an empty redirect
# list, because authelia permits only the grants a client names and an
# omitted `grant_types` means authorization-code alone.
kind = "machine";
# Its own id as its own permitted audience. The controller mints a
# token for `SWARM_CONTROLLER_OTEL_AUDIENCE` (./glue-controller-env.nix),
# and ./swarm-otel.nix's `oidc/swarm` authenticator checks for this
# same id; either half without the other is a 401 several layers from
# this line.
audience = [ queueClientId ];
}
];
};
}