nixcfg/machines/manager/monitoring.nix

{ pkgs, lib, config, nodes, ... }:

with lib;

{
  services.grafana = {
    enable = true;

    settings.server = {
      addr = "127.0.0.1";
      inherit (config.networking) domain;
      root_url = "%(protocol)s://%(domain)s:%(http_port)s/grafana/";
      serve_from_sub_path = true;
    };

    # provision = {
    #   enable = true;

    #   datasources.path = ./grafana/datasources.yaml
    # };
  };

  services.prometheus = {
    enable = true;

    webExternalUrl = "http://${config.networking.domain}/prometheus";

    scrapeConfigs = mapAttrsToList
      (name: node: {
        job_name = name;
        static_configs = [
          {
            targets = [
              "${name}:${toString node.config.services.prometheus.exporters.node.port}"
            ];
          }
        ];
      })
      nodes;
  };

  services.nginx.virtualHosts.${config.networking.domain} = {
    locations."/grafana" = {
      proxyPass = "http://127.0.0.1:${toString config.services.grafana.settings.server.http_port}";
      proxyWebsockets = true;
    };

    locations."/prometheus" = {
      proxyPass = "http://127.0.0.1:${toString config.services.prometheus.port}";
      proxyWebsockets = true;
    };
  };
}