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caddy: Expose metrics without the admin api

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SebastianStork 2025-09-23 13:10:24 +02:00
parent c917eed038
commit 3d0d4ea31d
2 changed files with 14 additions and 2 deletions
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2
modules/system/services/alloy.nix
View file

@ -126,7 +126,7 @@ in
text = ''
prometheus.scrape "caddy" {
targets = [{
__address__ = "localhost:2019",
__address__ = "localhost:${builtins.toString config.custom.services.caddy.metrics.port}",
instance = constants.hostname,
}]
forward_to = [prometheus.remote_write.default.receiver]

14
modules/system/services/caddy.nix
View file

@ -31,6 +31,10 @@ in
enable = lib.mkEnableOption "" // {
default = virtualHosts != { };
};
metrics.port = lib.mkOption {
type = lib.types.port;
default = 49514;
};
virtualHosts = lib.mkOption {
type = lib.types.attrsOf (
lib.types.submodule (
@ -63,9 +67,11 @@ in
};
};
config = lib.mkIf (virtualHosts != { }) (
config = lib.mkIf (virtualHosts != [ ]) (
lib.mkMerge [
{
meta.ports.tcp.list = [ cfg.metrics.port ];
services.caddy = {
enable = true;
package = pkgs.caddy.withPlugins {
@ -75,9 +81,15 @@ in
];
hash = "sha256-117vurf98sK/4o3JU3rBwNBUjnZZyFRJ1mq5T1S1IxY=";
};
enableReload = false;
globalConfig = ''
admin off
metrics { per_host }
'';
virtualHosts.":${builtins.toString cfg.metrics.port}" = {
logFormat = "";
extraConfig = "metrics /metrics";
};
};
custom.persist.directories = [ "/var/lib/caddy" ];