# Zabbix agent daemon. { config, pkgs, ... }: with pkgs.lib; let cfg = config.services.zabbixAgent; stateDir = "/var/run/zabbix"; logDir = "/var/log/zabbix"; pidFile = "${stateDir}/zabbix_agentd.pid"; configFile = pkgs.writeText "zabbix_agentd.conf" '' Server = ${cfg.server} LogFile = ${logDir}/zabbix_agentd PidFile = ${pidFile} StartAgents = 1 ''; in { ###### interface options = { services.zabbixAgent = { enable = mkOption { default = false; description = '' Whether to run the Zabbix monitoring agent on this machine. It will send monitoring data to a Zabbix server. ''; }; server = mkOption { default = "127.0.0.1"; description = '' The IP address or hostname of the Zabbix server to connect to. ''; }; }; }; ###### implementation config = mkIf cfg.enable { users.extraUsers = singleton { name = "zabbix"; uid = config.ids.uids.zabbix; description = "Zabbix daemon user"; }; jobs.zabbix_agent = { name = "zabbix-agent"; description = "Zabbix agent daemon"; startOn = "started network-interfaces"; stopOn = "stopping network-interfaces"; preStart = '' mkdir -m 0755 -p ${stateDir} ${logDir} chown zabbix ${stateDir} ${logDir} # Grrr, zabbix_agentd cannot be properly monitored by # Upstart. Upstart's "expect fork/daemon" feature doesn't # work because zabbix_agentd runs some programs on # startup, and zabbix_agentd doesn't have a flag to # prevent daemonizing. export PATH=${pkgs.nettools}/bin:$PATH ${pkgs.zabbix.agent}/sbin/zabbix_agentd --config ${configFile} ''; postStop = '' pid=$(cat ${pidFile}) test -n "$pid" && kill "$pid" # Wait until they're really gone. while ${pkgs.procps}/bin/pgrep -u zabbix zabbix_agentd > /dev/null; do sleep 1; done ''; }; environment.systemPackages = [ pkgs.zabbix.agent ]; }; }