Starting and Stopping Nagios
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See Also: Verifying Your Configuration
There's more than one way to start, stop, and restart Nagios. Here are some of the more common ones...
Always make sure you verify your configuration before you (re)start Nagios.
Starting Nagios
- Init Script: The easiest way to start the Nagios 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
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 daemon is by using the init script like so:
/etc/rc.d/init.d/nagios reload
- Web Interface: You can restart the Nagios through the web interface by clicking the "Process Info" navigation link and selecting "Restart the Nagios process":

- Manually: You can restart the Nagios process by sending it a SIGHUP signal like so:
kill -HUP <nagios_pid>
Stopping Nagios
- Init Script: The easiest way to stop the Nagios daemon is by using the init script like so:
/etc/rc.d/init.d/nagios stop
- Web Interface: You can stop the Nagios through the web interface by clicking the "Process Info" navigation link and selecting "Shutdown the Nagios process":

- Manually: You can stop the Nagios process by sending it a SIGTERM signal like so:
kill <nagios_pid>