pyrox.dev
1{ config, lib, pkgs, options }:
2
3with lib;
4
5let
6 cfg = config.services.prometheus.exporters.knot;
7in {
8 port = 9433;
9 extraOpts = {
10 knotLibraryPath = mkOption {
11 type = types.nullOr types.str;
12 default = null;
13 example = literalExpression ''"''${pkgs.knot-dns.out}/lib/libknot.so"'';
14 description = lib.mdDoc ''
15 Path to the library of `knot-dns`.
16 '';
17 };
18
19 knotSocketPath = mkOption {
20 type = types.str;
21 default = "/run/knot/knot.sock";
22 description = lib.mdDoc ''
23 Socket path of {manpage}`knotd(8)`.
24 '';
25 };
26
27 knotSocketTimeout = mkOption {
28 type = types.ints.positive;
29 default = 2000;
30 description = lib.mdDoc ''
31 Timeout in seconds.
32 '';
33 };
34 };
35 serviceOpts = {
36 path = with pkgs; [
37 procps
38 ];
39 serviceConfig = {
40 ExecStart = ''
41 ${pkgs.prometheus-knot-exporter}/bin/knot-exporter \
42 --web-listen-addr ${cfg.listenAddress} \
43 --web-listen-port ${toString cfg.port} \
44 --knot-socket-path ${cfg.knotSocketPath} \
45 --knot-socket-timeout ${toString cfg.knotSocketTimeout} \
46 ${lib.optionalString (cfg.knotLibraryPath != null) "--knot-library-path ${cfg.knotLibraryPath}"} \
47 ${concatStringsSep " \\\n " cfg.extraFlags}
48 '';
49 SupplementaryGroups = [
50 "knot"
51 ];
52 RestrictAddressFamilies = [
53 # Need AF_UNIX to collect data
54 "AF_UNIX"
55 ];
56 };
57 };
58}