Nagios

Nagios

Aktivieren von External Commands

Nagios 3 is not configured to look for external commands in the
default configuration as a security feature. To enable external
commands, you need to allow the web server write access to the
nagios command pipe.  the simplest way of doing this is to
set check_external_commands=1 in your nagios configuration,
and then change the permissions in a way which will be maintained
across package upgrades (otherwise dpkg will overwrite your
permission changes).  The following is the recommended approach:

- activate external command checks in the nagios configuration. this
  can be done by setting check_external_commands=1 in the file
  /etc/nagios3/nagios.cfg.

sed -i "s/check_external_commands=0/check_external_commands=1/" /etc/nagios3/nagios.cfg

- perform the following commands to change directory permissions and
  to make the changes permanent:

/etc/init.d/nagios3 stop
dpkg-statoverride --update --add nagios www-data 2710 /var/lib/nagios3/rw
dpkg-statoverride --update --add nagios nagios 751 /var/lib/nagios3
/etc/init.d/nagios3 start

This is done by intention and will not fixed. See also #538828 for more informations. 

Mails Benachichtigungen Limitieren

If you want to receive only 1 mail, it's easy. Set the
notification_interval to 0. But if you want 2, I guess you might achieve
this using escalation and setting notification_interval to 0.
Defining escalation with first_notification 2, and last_notification 2,
it should work.

I must admit I haven't tried it though.

Links

• http://www.nagios-wiki.de/nagios/howtos/nagiosgrapher
• http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=571801
• http://osdir.com/ml/network.nagios.plugins/2008-05/msg00070.html