nagios

Legacy host/service/networking monitoring program. Largely deprecated by nagios4. See also: nagios2, nagios3, nagios4. More information: https://manned.org/nagios.

• Start nagios:

nagios /etc/nagios/nagios.cfg

• Start nagios in daemon mode:

nagios -d

• Start nagios, print service check scheduling information to stdout, then shutdown:

nagios -s

• Verify configuration file:

nagios -v