prometheus
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5 changed files with 93 additions and 8 deletions
39
hosts/hackens-org/modules/mqtt2prometheus/default.nix
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39
hosts/hackens-org/modules/mqtt2prometheus/default.nix
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@ -0,0 +1,39 @@
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{ pkgs, lib, config, ... }:
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let
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cfg = config.services.mqtt2prometheus;
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in
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{
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options.services.mqtt2prometheus = {
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enable = lib.mkEnableOption "Enable mqtt2Prometheus";
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package = lib.mkOption {
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type = lib.types.package;
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description = "Which mqtt2prometheus package to use";
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};
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listenAddress = lib.mkOption {
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type = lib.types.str;
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default = "127.0.0.1";
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description = "listen address for HTTP server used to expose metrics";
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};
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listenPort = lib.mkOption {
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type = lib.types.port;
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default = 9641;
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description = "HTTP port used to expose metrics";
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};
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config = lib.mkOption { # à nixifier
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type = lib.types.path;
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description = "Path to config file";
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};
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};
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config = lib.mkIf cfg.enable {
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systemd.services."mqtt2prometheus" = {
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enable = true;
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description = "MQTT client which exposes metrics for prometheus monitoring software";
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after = [ "network.target" ];
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serviceConfig = {
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ExecStart = "${cfg.package}/bin/mqtt2prometheus -config ${cfg.config} -listen-address ${cfg.listenAddress} -listen-port ${toString cfg.listenPort}";
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Restart = "always";
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};
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wantedBy = [ "multi-user.target" ];
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};
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};
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}
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@ -0,0 +1,15 @@
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{ pkgs, ... }:
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pkgs.buildGoModule rec {
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pname = "mqtt2prometheus";
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version = "0.1.6";
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src = pkgs.fetchFromGitHub {
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owner = "hikhvar";
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repo = "mqtt2prometheus";
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rev = "v${version}";
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sha256 = "0dz5mrwm231g45i8rbmvaza8bm6cr4jg5vc87h41vnm7xsx815g7";
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};
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vendorSha256 = "1fyzij7cakhd6x2hf3rvvslvvxmfmlp881x5rz2qwm04spa18cp4";
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postInstall = ''
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mv $out/bin/cmd $out/bin/mqtt2prometheus
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'';
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}
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23
hosts/hackens-org/prometheus/config.yaml
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23
hosts/hackens-org/prometheus/config.yaml
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mqtt:
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# The MQTT broker to connect to
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server: tcp://new.hackens.org:1883
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# The Topic path to subscribe to. Be aware that you have to specify the wildcard, if you want to follow topics for multiple sensors.
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topic_path: kfet/open
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# The MQTT QoS level
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qos: 0
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metric_per_topic_config:
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metric_name_regex: "(?P<deviceid>.*)/(?P<metricname>.*)"
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cache:
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# Timeout. Each received metric will be presented for this time if no update is send via MQTT.
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# Set the timeout to -1 to disable the deletion of metrics from the cache. The exporter presents the ingest timestamp
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# to prometheus.
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timeout: 24h
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metrics:
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# The name of the metric in prometheus
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- prom_name: keft_open
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# The name of the metric in a MQTT JSON message
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mqtt_name: open
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# The prometheus help text for this metric
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help: K-Fêt opening state
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# The prometheus type for this metric. Valid values are: "gauge" and "counter"
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type: gauge
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@ -1,23 +1,28 @@
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{ pkgs, lib, config, ... }:
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{
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networking.firewall.allowedTCPPorts = [ 9090 # prometheus ];
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imports = [ ../modules/mqtt2prometheus ];
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networking.firewall.allowedTCPPorts = [ 9090 ];
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services = {
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prometheus = {
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enable = true;
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scrapeConfigs = [
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{
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job_name = "node";
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scrape_interval = "10s";
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job_name = "mqtt_listener";
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scrape_interval = "120s";
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static_configs = [
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{
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targets = [
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"localhost:9100"
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"localhost:9641"
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];
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}
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];
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}
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];
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};
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mqtt2prometheus = {
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enable = true;
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package = pkgs.callPackage (import ./mqtt2prometheus.nix) { };
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config = ./config.yaml;
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};
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};
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}
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@ -1,12 +1,15 @@
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{ pkgs, ... }:
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pkgs.buildGoModule {
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pkgs.buildGoModule rec {
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pname = "mqtt2prometheus";
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version = "0.1.6";
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src = pkgs.fetchFromGithub {
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src = pkgs.fetchFromGitHub {
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owner = "hikhvar";
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repo = "mqtt2prometheus";
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rev = "v${version}";
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sha256 = "0dz5mrwm231g45i8rbmvaza8bm6cr4jg5vc87h41vnm7xsx815g7";
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};
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vendorSha256 = "";
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vendorSha256 = "1fyzij7cakhd6x2hf3rvvslvvxmfmlp881x5rz2qwm04spa18cp4";
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postInstall = ''
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mv $out/bin/cmd $out/bin/mqtt2prometheus
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'';
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}
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