# Grafana dashboards for all the things! { config, lib, pkgs, ... }: let cfg = config.my.services.monitoring; in { options.my.services.monitoring = with lib; { enable = mkEnableOption "monitoring"; grafana = { port = mkOption { type = types.port; default = 9500; example = 3001; description = "Internal port"; }; username = mkOption { type = types.str; default = "ambroisie"; example = "admin"; description = "Admin username"; }; passwordFile = mkOption { type = types.str; example = "/var/lib/grafana/password.txt"; description = "Admin password stored in a file"; }; secretKeyFile = mkOption { type = types.str; example = "/var/lib/grafana/secret_key.txt"; description = "Secret key stored in a file"; }; }; prometheus = { port = mkOption { type = types.port; default = 9501; example = 3002; description = "Internal port"; }; scrapeInterval = mkOption { type = types.str; default = "15s"; example = "1m"; description = "Scrape interval"; }; }; }; config = lib.mkIf cfg.enable { services.grafana = { enable = true; settings = { server = { domain = "monitoring.${config.networking.domain}"; root_url = "https://monitoring.${config.networking.domain}/"; http_port = cfg.grafana.port; http_addr = "127.0.0.1"; # Proxied through Nginx }; security = { admin_user = cfg.grafana.username; admin_password = "$__file{${cfg.grafana.passwordFile}}"; secret_key = "$__file{${cfg.grafana.secretKeyFile}}"; }; }; provision = { enable = true; datasources.settings.datasources = [ { name = "Prometheus"; type = "prometheus"; url = "http://localhost:${toString cfg.prometheus.port}"; jsonData = { timeInterval = cfg.prometheus.scrapeInterval; }; } ]; dashboards.settings.providers = [ { name = "Node Exporter"; options.path = pkgs.nur.repos.alarsyo.grafanaDashboards.node-exporter; disableDeletion = true; } ]; }; }; services.prometheus = { enable = true; port = cfg.prometheus.port; listenAddress = "127.0.0.1"; retentionTime = "2y"; exporters = { node = { enable = true; enabledCollectors = [ "systemd" ]; port = 9100; listenAddress = "127.0.0.1"; }; }; globalConfig = { scrape_interval = cfg.prometheus.scrapeInterval; }; scrapeConfigs = [ { job_name = config.networking.hostName; static_configs = [{ targets = [ "127.0.0.1:${toString config.services.prometheus.exporters.node.port}" ]; }]; } ]; }; my.services.nginx.virtualHosts = { monitoring = { subdomain = "monitoring"; inherit (cfg.grafana) port; }; }; }; }