sysadmin Install net-dns/bind-tools required for monitoring DNS servers. Disabling the flag does not remove any plugin file. Install games-util/qstat required for monitoring FPS servers. Disabling the flag does not remove any plugin file. Install net-misc/ntp required for monitoring NTP servers and drifts. Disabling the flag does not remove any plugin file. Install net-analyzer/fping required for fancy ping monitoring. Disabling the flag does not remove any plugin file. Install net-misc/openssh required for monitoring SSH servers. Disabling the flag does not remove any plugin file. Install sys-power/nut required for monitoring compatible UPS units. Disabling the flag does not remove any plugin file. Install the script for sending IM notifications over Jabber with Nagios.