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hyperhive/nix/host-modules/glue-swarm-otel-oidc-client.nix
atlas a5eb3c15c4 ops: update option pointers after otel split
Four comments pointed at ./swarm-otel.nix for something the split moved
to ./swarm-otel-service.nix: `domain` (otel.nix), `domainBase`
(swarm-ui.nix), the `clientId`/`audience` options
(glue-swarm-otel-oidc-client.nix), and `producerName` (swarm-otel.nix's
own "Read-only option below"). Every other pointer to ./swarm-otel.nix
names its `config` block, units, exporters, authenticators or
assertions, which stayed.

Refs #3742
2026-10-01 13:00:40 +02:00

58 lines
2.5 KiB
Nix

# Glue: register the swarm's collector as an OIDC client wherever authelia
# runs.
#
# ONE PAIRING PER FILE — swarm-otel ← authelia, and nothing else. Deleting
# this leaves a swarm whose collector is not a client authelia has ever heard
# of, so no token it presents is ever accepted and authelia mints no secret
# for the publisher to send on.
#
# ⚠️ Gated on authelia being HERE, and deliberately NOT on this host running
# the collector. A client is a row in THIS host's provider config, so it can
# only be declared where that config is rendered — and ./swarm-otel.nix's
# whole `config` block hangs off `deploy.swarm-otel.enable`, so a swarm with
# the collector and authelia on different hosts registered the client
# nowhere at all. Same bug, same fix, as ./glue-grafana-oidc-client.nix one
# module over — read that file's own comment for the property this one
# shares with it.
#
# ⚠️ Registered whether or not the swarm has a collector, for the same
# reason as Grafana's: nothing in `swarm.*` records that one exists,
# `deploy.swarm-otel.enable` only answers "does THIS host run it". The cost
# is one unused client and one unused minted secret in a swarm with no
# collector — the same trade ./swarm-otel.nix already made for this exact
# client when it dropped the published-scrape-target guard on registering it.
{
lib,
config,
...
}:
let
hyperhiveCfg = config.services.hyperhive;
deployCfg = hyperhiveCfg.deploy;
otelCfg = hyperhiveCfg.swarm.otel;
in
{
config = lib.mkIf deployCfg.authelia.enable {
# One declaration, two readers: `clientId` and `audience` are read-only
# options ./swarm-otel-service.nix derives from the scrape/push targets it
# owns, so this file states neither formula a second time.
services.hyperhive.swarm.authelia.oidc.clients = [
{
id = otelCfg.clientId;
description = "HyperHive swarm collector";
kind = "machine";
# Grants `authelia.bearer.authz`, without which the authz endpoint
# refuses an otherwise valid token and blames the token rather than
# the missing grant.
bearerAuthz = true;
audience = otelCfg.audience;
# Stated rather than left on authelia's default, because the two
# agreeing today is not the same as this being the required value:
# authelia permits only basic / JWT methods for a confidential
# client holding this scope, and enforces it in the startup
# validator.
tokenEndpointAuthMethod = "client_secret_basic";
}
];
};
}