pyrox.dev
1{ config, lib, pkgs, ... }:
2
3with lib;
4
5let
6 cfg = config.services.journalbeat;
7
8 journalbeatYml = pkgs.writeText "journalbeat.yml" ''
9 name: ${cfg.name}
10 tags: ${builtins.toJSON cfg.tags}
11
12 ${cfg.extraConfig}
13 '';
14
15in
16{
17 options = {
18
19 services.journalbeat = {
20
21 enable = mkEnableOption (lib.mdDoc "journalbeat");
22
23 package = mkOption {
24 type = types.package;
25 default = pkgs.journalbeat;
26 defaultText = literalExpression "pkgs.journalbeat";
27 description = lib.mdDoc ''
28 The journalbeat package to use
29 '';
30 };
31
32 name = mkOption {
33 type = types.str;
34 default = "journalbeat";
35 description = lib.mdDoc "Name of the beat";
36 };
37
38 tags = mkOption {
39 type = types.listOf types.str;
40 default = [];
41 description = lib.mdDoc "Tags to place on the shipped log messages";
42 };
43
44 stateDir = mkOption {
45 type = types.str;
46 default = "journalbeat";
47 description = lib.mdDoc ''
48 Directory below `/var/lib/` to store journalbeat's
49 own logs and other data. This directory will be created automatically
50 using systemd's StateDirectory mechanism.
51 '';
52 };
53
54 extraConfig = mkOption {
55 type = types.lines;
56 default = "";
57 description = lib.mdDoc "Any other configuration options you want to add";
58 };
59
60 };
61 };
62
63 config = mkIf cfg.enable {
64
65 assertions = [
66 {
67 assertion = !hasPrefix "/" cfg.stateDir;
68 message =
69 "The option services.journalbeat.stateDir shouldn't be an absolute directory." +
70 " It should be a directory relative to /var/lib/.";
71 }
72 ];
73
74 systemd.services.journalbeat = {
75 description = "Journalbeat log shipper";
76 wantedBy = [ "multi-user.target" ];
77 wants = [ "elasticsearch.service" ];
78 after = [ "elasticsearch.service" ];
79 preStart = ''
80 mkdir -p ${cfg.stateDir}/data
81 mkdir -p ${cfg.stateDir}/logs
82 '';
83 serviceConfig = {
84 StateDirectory = cfg.stateDir;
85 ExecStart = ''
86 ${cfg.package}/bin/journalbeat \
87 -c ${journalbeatYml} \
88 -path.data /var/lib/${cfg.stateDir}/data \
89 -path.logs /var/lib/${cfg.stateDir}/logs'';
90 Restart = "always";
91 };
92 };
93 };
94}