pyrox.dev
1{ config, lib, pkgs, ... }:
2
3with lib;
4
5let
6 cfg = config.services.bosun;
7
8 configFile = pkgs.writeText "bosun.conf" ''
9 tsdbHost = ${cfg.opentsdbHost}
10 httpListen = ${cfg.listenAddress}
11 stateFile = ${cfg.stateFile}
12 checkFrequency = 5m
13
14 ${cfg.extraConfig}
15 '';
16
17in {
18
19 options = {
20
21 services.bosun = {
22
23 enable = mkOption {
24 type = types.bool;
25 default = false;
26 description = ''
27 Whether to run bosun.
28 '';
29 };
30
31 package = mkOption {
32 type = types.package;
33 example = literalExample "pkgs.bosun";
34 description = ''
35 bosun binary to use.
36 '';
37 };
38
39 user = mkOption {
40 type = types.string;
41 default = "bosun";
42 description = ''
43 User account under which bosun runs.
44 '';
45 };
46
47 group = mkOption {
48 type = types.string;
49 default = "bosun";
50 description = ''
51 Group account under which bosun runs.
52 '';
53 };
54
55 opentsdbHost = mkOption {
56 type = types.string;
57 default = "localhost:4242";
58 description = ''
59 Host and port of the OpenTSDB database that stores bosun data.
60 '';
61 };
62
63 listenAddress = mkOption {
64 type = types.string;
65 default = ":8070";
66 description = ''
67 The host address and port that bosun's web interface will listen on.
68 '';
69 };
70
71 stateFile = mkOption {
72 type = types.string;
73 default = "/var/lib/bosun/bosun.state";
74 description = ''
75 Path to bosun's state file.
76 '';
77 };
78
79 extraConfig = mkOption {
80 type = types.string;
81 default = "";
82 description = ''
83 Extra configuration options for Bosun. You should describe your
84 desired templates, alerts, macros, etc through this configuration
85 option.
86
87 A detailed description of the supported syntax can be found at-spi2-atk
88 http://bosun.org/configuration.html
89 '';
90 };
91
92 };
93
94 };
95
96 config = mkIf cfg.enable {
97
98 services.bosun.package = mkDefault pkgs.bosun;
99
100 systemd.services.bosun = {
101 description = "bosun metrics collector (part of Bosun)";
102 wantedBy = [ "multi-user.target" ];
103
104 preStart =
105 ''
106 mkdir -p `dirname ${cfg.stateFile}`;
107 touch ${cfg.stateFile}
108 touch ${cfg.stateFile}.tmp
109
110 if [ "$(id -u)" = 0 ]; then
111 chown ${cfg.user}:${cfg.group} ${cfg.stateFile}
112 chown ${cfg.user}:${cfg.group} ${cfg.stateFile}.tmp
113 fi
114 '';
115
116 serviceConfig = {
117 PermissionsStartOnly = true;
118 User = cfg.user;
119 Group = cfg.group;
120 ExecStart = ''
121 ${cfg.package}/bin/bosun -c ${configFile}
122 '';
123 };
124 };
125
126 users.extraUsers.bosun = {
127 description = "bosun user";
128 group = "bosun";
129 uid = config.ids.uids.bosun;
130 };
131
132 users.extraGroups.bosun.gid = config.ids.gids.bosun;
133
134 };
135
136}