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