diff options
Diffstat (limited to 'nixpkgs/nixos/modules/services/monitoring/kapacitor.nix')
-rw-r--r-- | nixpkgs/nixos/modules/services/monitoring/kapacitor.nix | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/nixpkgs/nixos/modules/services/monitoring/kapacitor.nix b/nixpkgs/nixos/modules/services/monitoring/kapacitor.nix new file mode 100644 index 000000000000..01919e73f734 --- /dev/null +++ b/nixpkgs/nixos/modules/services/monitoring/kapacitor.nix @@ -0,0 +1,188 @@ +{ config, lib, pkgs, ... }: + +with lib; + +let + cfg = config.services.kapacitor; + + kapacitorConf = pkgs.writeTextFile { + name = "kapacitord.conf"; + text = '' + hostname="${config.networking.hostName}" + data_dir="${cfg.dataDir}" + + [http] + bind-address = "${cfg.bind}:${toString cfg.port}" + log-enabled = false + auth-enabled = false + + [task] + dir = "${cfg.dataDir}/tasks" + snapshot-interval = "${cfg.taskSnapshotInterval}" + + [replay] + dir = "${cfg.dataDir}/replay" + + [storage] + boltdb = "${cfg.dataDir}/kapacitor.db" + + ${optionalString (cfg.loadDirectory != null) '' + [load] + enabled = true + dir = "${cfg.loadDirectory}" + ''} + + ${optionalString (cfg.defaultDatabase.enable) '' + [[influxdb]] + name = "default" + enabled = true + default = true + urls = [ "${cfg.defaultDatabase.url}" ] + username = "${cfg.defaultDatabase.username}" + password = "${cfg.defaultDatabase.password}" + ''} + + ${optionalString (cfg.alerta.enable) '' + [alerta] + enabled = true + url = "${cfg.alerta.url}" + token = "${cfg.alerta.token}" + environment = "${cfg.alerta.environment}" + origin = "${cfg.alerta.origin}" + ''} + + ${cfg.extraConfig} + ''; + }; +in +{ + options.services.kapacitor = { + enable = mkEnableOption "kapacitor"; + + dataDir = mkOption { + type = types.path; + default = "/var/lib/kapacitor"; + description = "Location where Kapacitor stores its state"; + }; + + port = mkOption { + type = types.port; + default = 9092; + description = "Port of Kapacitor"; + }; + + bind = mkOption { + type = types.str; + default = ""; + example = "0.0.0.0"; + description = "Address to bind to. The default is to bind to all addresses"; + }; + + extraConfig = mkOption { + description = "These lines go into kapacitord.conf verbatim."; + default = ""; + type = types.lines; + }; + + user = mkOption { + type = types.str; + default = "kapacitor"; + description = "User account under which Kapacitor runs"; + }; + + group = mkOption { + type = types.str; + default = "kapacitor"; + description = "Group under which Kapacitor runs"; + }; + + taskSnapshotInterval = mkOption { + type = types.str; + description = "Specifies how often to snapshot the task state (in InfluxDB time units)"; + default = "1m0s"; + }; + + loadDirectory = mkOption { + type = types.nullOr types.path; + description = "Directory where to load services from, such as tasks, templates and handlers (or null to disable service loading on startup)"; + default = null; + }; + + defaultDatabase = { + enable = mkEnableOption "kapacitor.defaultDatabase"; + + url = mkOption { + description = "The URL to an InfluxDB server that serves as the default database"; + example = "http://localhost:8086"; + type = types.str; + }; + + username = mkOption { + description = "The username to connect to the remote InfluxDB server"; + type = types.str; + }; + + password = mkOption { + description = "The password to connect to the remote InfluxDB server"; + type = types.str; + }; + }; + + alerta = { + enable = mkEnableOption "kapacitor alerta integration"; + + url = mkOption { + description = "The URL to the Alerta REST API"; + default = "http://localhost:5000"; + type = types.str; + }; + + token = mkOption { + description = "Default Alerta authentication token"; + type = types.str; + default = ""; + }; + + environment = mkOption { + description = "Default Alerta environment"; + type = types.str; + default = "Production"; + }; + + origin = mkOption { + description = "Default origin of alert"; + type = types.str; + default = "kapacitor"; + }; + }; + }; + + config = mkIf cfg.enable { + environment.systemPackages = [ pkgs.kapacitor ]; + + systemd.tmpfiles.settings."10-kapacitor".${cfg.dataDir}.d = { + inherit (cfg) user group; + }; + + systemd.services.kapacitor = { + description = "Kapacitor Real-Time Stream Processing Engine"; + wantedBy = [ "multi-user.target" ]; + after = [ "networking.target" ]; + serviceConfig = { + ExecStart = "${pkgs.kapacitor}/bin/kapacitord -config ${kapacitorConf}"; + User = "kapacitor"; + Group = "kapacitor"; + }; + }; + + users.users.kapacitor = { + uid = config.ids.uids.kapacitor; + description = "Kapacitor user"; + home = cfg.dataDir; + }; + + users.groups.kapacitor = { + gid = config.ids.gids.kapacitor; + }; + }; +} |