summary refs log tree commit diff
path: root/nixos/modules/services/monitoring/prometheus/exporters/unbound.nix
blob: cf0efddd340a91a97d1068dadd853a0f80b2c2b6 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
{ config, lib, pkgs, options }:

with lib;

let
  cfg = config.services.prometheus.exporters.unbound;
in
{
  port = 9167;
  extraOpts = {
    fetchType = mkOption {
      # TODO: add shm when upstream implemented it
      type = types.enum [ "tcp" "uds" ];
      default = "uds";
      description = ''
        Which methods the exporter uses to get the information from unbound.
      '';
    };

    telemetryPath = mkOption {
      type = types.str;
      default = "/metrics";
      description = ''
        Path under which to expose metrics.
      '';
    };

    controlInterface = mkOption {
      type = types.nullOr types.str;
      default = null;
      example = "/run/unbound/unbound.socket";
      description = ''
        Path to the unbound socket for uds mode or the control interface port for tcp mode.

        Example:
          uds-mode: /run/unbound/unbound.socket
          tcp-mode: 127.0.0.1:8953
      '';
    };
  };

  serviceOpts = mkMerge ([{
    serviceConfig = {
      ExecStart = ''
        ${pkgs.prometheus-unbound-exporter}/bin/unbound-telemetry \
          ${cfg.fetchType} \
          --bind ${cfg.listenAddress}:${toString cfg.port} \
          --path ${cfg.telemetryPath} \
          ${optionalString (cfg.controlInterface != null) "--control-interface ${cfg.controlInterface}"} \
          ${toString cfg.extraFlags}
      '';
      RestrictAddressFamilies = [
        # Need AF_UNIX to collect data
        "AF_UNIX"
      ];
    };
  }] ++ [
    (mkIf config.services.unbound.enable {
      after = [ "unbound.service" ];
      requires = [ "unbound.service" ];
    })
  ]);
}