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|
{ config, lib, pkgs, ... }:
with builtins;
with import <stockholm/lib>;
let
cfg = config.krebs.monit;
out = {
options.krebs.monit = api;
config = mkIf cfg.enable imp;
};
api = {
enable = mkEnableOption "monit";
http = {
enable = mkEnableOption "monit http server";
port = mkOption {
type = types.int;
default = 9093;
};
user = mkOption {
type = types.str;
default = "krebs";
};
pass = mkOption {
type = types.str;
default = "bob";
};
};
user = mkOption {
type = types.user;
default = {
name = "monit";
};
};
group = mkOption {
type = types.group;
default = {
name = "monitor";
};
};
extraConfig = mkOption {
type = types.attrs;
default = {};
};
alarms = mkOption {
default = {};
type = with types; attrsOf (submodule {
options = {
test = mkOption {
type = either path str;
};
alarm = mkOption {
type = either path str;
};
interval = mkOption {
type = str;
default = "10";
};
};
});
};
};
imp = let
configFile = pkgs.writeText "monit.cfg" ''
${optionalString cfg.http.enable ''
set httpd port ${toString cfg.http.port}
allow ${cfg.http.user}:${cfg.http.pass}
''}
set daemon 10
${concatStringsSep "\n" (mapAttrsToList (name: alarm: ''
check program ${name} with path "${alarm.test}"
every ${alarm.interval} cycles
if status != 0 then exec "${alarm.alarm}"
'') cfg.alarms)}
'';
in {
environment.etc = [
{
source = configFile;
target = "monit.conf";
mode = "0400";
uid = config.users.users.${cfg.user.name}.uid;
}
];
users = {
groups.${cfg.group.name} = {
inherit (cfg.group) name gid;
};
users.${cfg.user.name} = {
inherit (cfg.user) home name uid;
createHome = true;
group = cfg.group.name;
};
};
systemd.services.monit = {
description = "monit";
after = [ "network.target" ];
wantedBy = [ "multi-user.target" ];
restartIfChanged = true;
serviceConfig = {
Restart = "always";
User = cfg.user.name;
ExecStart = "${pkgs.monit}/bin/monit -I -c /etc/monit.conf";
# Monit should restart when the config changes
ExecStartPre = "${pkgs.coreutils}/bin/echo ${configFile}";
};
};
};
in out
|
