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How to Start and Stop Nagios Core | Nagios Tutorial

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Starting Nagios Core
Init Script: The easiest way to start the Nagios Core daemon is by using the init script like so:
/etc/rc.d/init.d/nagios start
Manually: You can start the Nagios daemon manually with the -d command line option like so:
/usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg
Restarting Nagios Core
Restarting/reloading is nececessary when you modify your configuration files and want those changes to take effect.
Init Script: The easiest way to restart the Nagios Core daemon is by using the init script like so:
/etc/rc.d/init.d/nagios reload
Web Interface: You can restart the Nagios Core through the web interface by clicking the “Process Info” navigation link and selecting “Restart the Nagios process”:
Manually: You can restart the Nagios Core process by sending it a SIGHUP signal like so:
kill -HUP <nagios_pid>
Stopping Nagios Core
Init Script: The easiest way to stop the Nagios Core daemon is by using the init script like so:
/etc/rc.d/init.d/nagios stop
Web Interface: You can stop the Nagios Core through the web interface by clicking the “Process Info” navigation link and selecting “Shutdown the Nagios process”:
Manually: You can stop the Nagios Core process by sending it a SIGTERM signal like so:
kill <nagios_pid>
Rajesh Kumar