diff options
Diffstat (limited to 'nixos/modules/services/monitoring/karma.nix')
-rw-r--r-- | nixos/modules/services/monitoring/karma.nix | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/nixos/modules/services/monitoring/karma.nix b/nixos/modules/services/monitoring/karma.nix new file mode 100644 index 0000000000000..85dbc81f443f0 --- /dev/null +++ b/nixos/modules/services/monitoring/karma.nix @@ -0,0 +1,128 @@ +{ config, pkgs, lib, ... }: +with lib; +let + cfg = config.services.karma; + yaml = pkgs.formats.yaml { }; +in +{ + options.services.karma = { + enable = mkEnableOption (mdDoc "the Karma dashboard service"); + + package = mkOption { + type = types.package; + default = pkgs.karma; + defaultText = literalExpression "pkgs.karma"; + description = mdDoc '' + The Karma package that should be used. + ''; + }; + + configFile = mkOption { + type = types.path; + default = yaml.generate "karma.yaml" cfg.settings; + defaultText = "A configuration file generated from the provided nix attributes settings option."; + description = mdDoc '' + A YAML config file which can be used to configure karma instead of the nix-generated file. + ''; + example = "/etc/karma/karma.conf"; + }; + + environment = mkOption { + type = with types; attrsOf str; + default = {}; + description = mdDoc '' + Additional environment variables to provide to karma. + ''; + example = { + ALERTMANAGER_URI = "https://alertmanager.example.com"; + ALERTMANAGER_NAME= "single"; + }; + }; + + openFirewall = mkOption { + type = types.bool; + default = false; + description = mdDoc '' + Whether to open ports in the firewall needed for karma to function. + ''; + }; + + extraOptions = mkOption { + type = with types; listOf str; + default = []; + description = mdDoc '' + Extra command line options. + ''; + example = [ + "--alertmanager.timeout 10s" + ]; + }; + + settings = mkOption { + type = types.submodule { + freeformType = yaml.type; + + options.listen = { + address = mkOption { + type = types.str; + default = "127.0.0.1"; + description = mdDoc '' + Hostname or IP to listen on. + ''; + example = "[::]"; + }; + + port = mkOption { + type = types.port; + default = 8080; + description = mdDoc '' + HTTP port to listen on. + ''; + example = 8182; + }; + }; + }; + default = { + listen = { + address = "127.0.0.1"; + }; + }; + description = mdDoc '' + Karma dashboard configuration as nix attributes. + + Reference: <https://github.com/prymitive/karma/blob/main/docs/CONFIGURATION.md> + ''; + example = { + listen = { + address = "192.168.1.4"; + port = "8000"; + prefix = "/dashboard"; + }; + alertmanager = { + interval = "15s"; + servers = [ + { + name = "prod"; + uri = "http://alertmanager.example.com"; + } + ]; + }; + }; + }; + }; + + config = mkIf cfg.enable { + systemd.services.karma = { + description = "Alert dashboard for Prometheus Alertmanager"; + wantedBy = [ "multi-user.target" ]; + environment = cfg.environment; + serviceConfig = { + Type = "simple"; + DynamicUser = true; + Restart = "on-failure"; + ExecStart = "${pkgs.karma}/bin/karma --config.file ${cfg.configFile} ${concatStringsSep " " cfg.extraOptions}"; + }; + }; + networking.firewall.allowedTCPPorts = mkIf cfg.openFirewall [ cfg.settings.listen.port ]; + }; +} |