nixpkgs/nixos/modules/services/monitoring/zabbix-server.nix
2019-07-11 17:22:26 +01:00

148 lines
4.1 KiB
Nix

# Zabbix server daemon.
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.zabbixServer;
stateDir = "/run/zabbix";
logDir = "/var/log/zabbix";
libDir = "/var/lib/zabbix";
pidFile = "${stateDir}/zabbix_server.pid";
configFile = pkgs.writeText "zabbix_server.conf"
''
ListenPort = ${cfg.listenPort}
LogFile = ${logDir}/zabbix_server
PidFile = ${pidFile}
${optionalString (cfg.dbServer != "localhost") ''
DBHost = ${cfg.dbServer}
''}
DBName = ${cfg.dbName}
DBUser = ${cfg.dbUser}
DBPort = ${cfg.dbPort}
DBPassword = ${cfg.dbPassword}
${config.services.zabbixServer.extraConfig}
'';
useLocalMysql = cfg.dbServer == "localhost" || cfg.dbServer == "";
in
{
###### interface
options = {
services.zabbixServer.enable = mkOption {
default = false;
type = types.bool;
description = ''
Whether to run the Zabbix server on this machine.
'';
};
services.zabbixServer.dbServer = mkOption {
default = "localhost";
type = types.str;
description = ''
Hostname or IP address of the database server.
Use an empty string ("") to use peer authentication.
'';
};
services.zabbixServer.dbPassword = mkOption {
type = types.str;
description = "Password used to connect to the database server.";
};
services.zabbixServer.dbUser = mkOption {
default = "zabbix";
type = types.str;
description = "User used to connect to the database server.";
};
services.zabbixServer.dbPort = mkOption {
default = "3306";
type = types.str;
description = "Port used to connect to the database server.";
};
services.zabbixServer.dbName = mkOption {
default = "zabbix";
type = types.str;
description = "Port used to connect to the database server.";
};
services.zabbixServer.listenPort = mkOption {
default = "10051";
type = types.str;
description = "Port used to listen to the agent.";
};
services.zabbixServer.extraConfig = mkOption {
default = "";
type = types.lines;
description = ''
Configuration that is injected verbatim into the configuration file.
'';
};
};
###### implementation
config = mkIf cfg.enable {
services.mysql.enable = useLocalMysql;
services.mysql.package = pkgs.mysql;
users.users = singleton
{ name = "zabbix";
uid = config.ids.uids.zabbix;
description = "Zabbix daemon user";
};
systemd.services."zabbix-server" =
{ description = "Zabbix Server";
wantedBy = [ "multi-user.target" ];
after = optional useLocalMysql "mysql.service";
preStart =
''
mkdir -m 0755 -p ${stateDir} ${logDir} ${libDir}
chown zabbix ${stateDir} ${logDir} ${libDir}
${lib.optionalString (useLocalMysql) ''
if ! test -e "${libDir}/db-created"; then
${pkgs.sudo}/bin/sudo -u ${config.services.mysql.user} ${pkgs.mysql}/bin/mysql -uroot -e 'CREATE DATABASE ${cfg.dbName}'
${pkgs.sudo}/bin/sudo -u ${config.services.mysql.user} ${pkgs.mysql}/bin/mysql -uroot -e "GRANT ALL ON ${cfg.dbName}.* TO ${cfg.dbUser}@localhost IDENTIFIED BY \"${cfg.dbPassword}\";"
cat ${pkgs.zabbix.server}/share/zabbix/db/schema/mysql.sql | ${pkgs.sudo}/bin/sudo -u zabbix ${pkgs.mysql}/bin/mysql -u${cfg.dbUser} -p${cfg.dbPassword} ${cfg.dbName}
cat ${pkgs.zabbix.server}/share/zabbix/db/data/images.sql | ${pkgs.sudo}/bin/sudo -u zabbix ${pkgs.mysql}/bin/mysql -u${cfg.dbUser} -p${cfg.dbPassword} ${cfg.dbName}
cat ${pkgs.zabbix.server}/share/zabbix/db/data/data.sql | ${pkgs.sudo}/bin/sudo -u zabbix ${pkgs.mysql}/bin/mysql -u${cfg.dbUser} -p${cfg.dbPassword} ${cfg.dbName}
touch "${libDir}/db-created"
fi''}
'';
path = [ pkgs.nettools ];
serviceConfig.ExecStart = "${pkgs.zabbix.server}/sbin/zabbix_server --config ${configFile}";
serviceConfig.Type = "forking";
serviceConfig.PIDFile = pidFile;
};
};
}