nixpkgs/nixos/modules/services/monitoring/bosun.nix
pennae 2e751c0772 treewide: automatically md-convert option descriptions
the conversion procedure is simple:

 - find all things that look like options, ie calls to either `mkOption`
   or `lib.mkOption` that take an attrset. remember the attrset as the
   option
 - for all options, find a `description` attribute who's value is not a
   call to `mdDoc` or `lib.mdDoc`
 - textually convert the entire value of the attribute to MD with a few
   simple regexes (the set from mdize-module.sh)
 - if the change produced a change in the manual output, discard
 - if the change kept the manual unchanged, add some text to the
   description to make sure we've actually found an option. if the
   manual changes this time, keep the converted description

this procedure converts 80% of nixos options to markdown. around 2000
options remain to be inspected, but most of those fail the "does not
change the manual output check": currently the MD conversion process
does not faithfully convert docbook tags like <code> and <package>, so
any option using such tags will not be converted at all.
2022-07-30 15:16:34 +02:00

166 lines
3.9 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.bosun;
configFile = pkgs.writeText "bosun.conf" ''
${optionalString (cfg.opentsdbHost !=null) "tsdbHost = ${cfg.opentsdbHost}"}
${optionalString (cfg.influxHost !=null) "influxHost = ${cfg.influxHost}"}
httpListen = ${cfg.listenAddress}
stateFile = ${cfg.stateFile}
ledisDir = ${cfg.ledisDir}
checkFrequency = ${cfg.checkFrequency}
${cfg.extraConfig}
'';
in {
options = {
services.bosun = {
enable = mkOption {
type = types.bool;
default = false;
description = lib.mdDoc ''
Whether to run bosun.
'';
};
package = mkOption {
type = types.package;
default = pkgs.bosun;
defaultText = literalExpression "pkgs.bosun";
description = lib.mdDoc ''
bosun binary to use.
'';
};
user = mkOption {
type = types.str;
default = "bosun";
description = lib.mdDoc ''
User account under which bosun runs.
'';
};
group = mkOption {
type = types.str;
default = "bosun";
description = lib.mdDoc ''
Group account under which bosun runs.
'';
};
opentsdbHost = mkOption {
type = types.nullOr types.str;
default = "localhost:4242";
description = lib.mdDoc ''
Host and port of the OpenTSDB database that stores bosun data.
To disable opentsdb you can pass null as parameter.
'';
};
influxHost = mkOption {
type = types.nullOr types.str;
default = null;
example = "localhost:8086";
description = lib.mdDoc ''
Host and port of the influxdb database.
'';
};
listenAddress = mkOption {
type = types.str;
default = ":8070";
description = lib.mdDoc ''
The host address and port that bosun's web interface will listen on.
'';
};
stateFile = mkOption {
type = types.path;
default = "/var/lib/bosun/bosun.state";
description = lib.mdDoc ''
Path to bosun's state file.
'';
};
ledisDir = mkOption {
type = types.path;
default = "/var/lib/bosun/ledis_data";
description = lib.mdDoc ''
Path to bosun's ledis data dir
'';
};
checkFrequency = mkOption {
type = types.str;
default = "5m";
description = lib.mdDoc ''
Bosun's check frequency
'';
};
extraConfig = mkOption {
type = types.lines;
default = "";
description = lib.mdDoc ''
Extra configuration options for Bosun. You should describe your
desired templates, alerts, macros, etc through this configuration
option.
A detailed description of the supported syntax can be found at-spi2-atk
http://bosun.org/configuration.html
'';
};
};
};
config = mkIf cfg.enable {
systemd.services.bosun = {
description = "bosun metrics collector (part of Bosun)";
wantedBy = [ "multi-user.target" ];
preStart = ''
mkdir -p "$(dirname "${cfg.stateFile}")";
touch "${cfg.stateFile}"
touch "${cfg.stateFile}.tmp"
mkdir -p "${cfg.ledisDir}";
if [ "$(id -u)" = 0 ]; then
chown ${cfg.user}:${cfg.group} "${cfg.stateFile}"
chown ${cfg.user}:${cfg.group} "${cfg.stateFile}.tmp"
chown ${cfg.user}:${cfg.group} "${cfg.ledisDir}"
fi
'';
serviceConfig = {
PermissionsStartOnly = true;
User = cfg.user;
Group = cfg.group;
ExecStart = ''
${cfg.package}/bin/bosun -c ${configFile}
'';
};
};
users.users.bosun = {
description = "bosun user";
group = "bosun";
uid = config.ids.uids.bosun;
};
users.groups.bosun.gid = config.ids.gids.bosun;
};
}