121 lines
3.4 KiB
Nix
121 lines
3.4 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.clerie.monitoring;
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monitoring-network-base = "fd00:327:327:327::";
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in
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{
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options = {
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clerie.monitoring = {
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enable = mkEnableOption "clerie's Monitoring";
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id = mkOption {
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type = types.str;
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description = "ID of the Monitoring Interface (it is actually a part of an ip address)";
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};
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pubkey = mkOption {
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type = types.str;
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description = "Public Key of the monitoring wireguard interface of this host";
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};
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serviceLevel = mkOption {
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type = types.str;
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default = "infra";
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description = "Service level this instance is assigned to";
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};
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bird = mkEnableOption "Monitor bird";
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blackbox = mkEnableOption "Monitor blackbox";
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nixos = mkOption {
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type = types.bool;
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default = true;
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description = "Monitor NixOS";
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};
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};
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};
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config = mkIf cfg.enable {
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networking.wireguard.enable = true;
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networking.wireguard.interfaces = {
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wg-monitoring = {
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ips = [ "${monitoring-network-base}${cfg.id}/64" ];
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peers = [
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{
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endpoint = "[2001:638:904:ffca::7]:54523";
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persistentKeepalive = 25;
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allowedIPs = [ "${monitoring-network-base}/64" ];
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publicKey = "eyhJKV41E1F0gZHBNqyzUnj72xg5f3bdDduVtpPN4AY=";
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}
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];
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privateKeyFile = config.age.secrets.wg-monitoring.path;
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};
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};
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services.prometheus.exporters.node = {
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enable = true;
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#listenAddress = "${monitoring-network-base}${cfg.id}";
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openFirewall = true;
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firewallFilter = "-i wg-monitoring -p tcp -m tcp --dport 9100";
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enabledCollectors = [
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"systemd"
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];
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};
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systemd.services."prometheus-node-exporter".serviceConfig.RestrictAddressFamilies = [ "AF_NETLINK" ];
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services.prometheus.exporters.bird = mkIf cfg.bird {
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enable = true;
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openFirewall = true;
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firewallFilter = "-i wg-monitoring -p tcp -m tcp --dport 9324";
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};
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services.prometheus.exporters.blackbox = mkIf cfg.blackbox {
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enable = true;
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openFirewall = true;
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firewallFilter = "-i wg-monitoring -p tcp -m tcp --dport 9115";
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configFile = pkgs.writeText "blackbox.yml" ''
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modules:
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icmp6:
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prober: icmp
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icmp:
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preferred_ip_protocol: ip6
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ip_protocol_fallback: false
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icmp4:
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prober: icmp
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icmp:
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preferred_ip_protocol: ip4
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ip_protocol_fallback: false
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'';
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};
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users.users."nixos-exporter" = {
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isSystemUser = true;
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group = "nixos-exporter";
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};
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users.groups."nixos-exporter" = {};
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systemd.services."prometheus-nixos-exporter" = {
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wantedBy = [ "multi-user.target" ];
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after = [ "network.target" ];
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serviceConfig = {
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Restart = "always";
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PrivateTmp = true;
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WorkingDirectory = "/tmp";
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RuntimeDirectory = "prometheus-nixos-exporter";
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User = "nixos-exporter";
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Group = "nixos-exporter";
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ExecStart = ''
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${pkgs.nixos-exporter}/bin/nixos-exporter --listen [::]:9152 exporter
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'';
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};
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};
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networking.firewall.extraCommands = ''
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ip46tables -A nixos-fw -i wg-monitoring -p tcp -m tcp --dport 9152 -m comment --comment nixos-exporter -j nixos-fw-accept
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'';
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};
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}
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