How to monitor Nagios itself?

[Youngblood, Gregory (SAIC)]

If you have SSH capabilities through the firewall, then you should be able
to setup SSH (for a non-root user) that can execute a command on each of the
machines. 

Once ssh works in both directions, then each machine should be able to use
check_by_ssh to execute check_nagios on the remote machine.
 
I'm assuming your wanting to check nagios itself and not just the host that
nagios is running on. If you don't have SSH through the firewall, then you
will need to determine what services you have visible to each machine
through the firewall. For example, if both machines have HTTP servers, and
can see each other, then you might be able to wrap the check_nagios into a
CGI. Personally, I wouldn't do it this way. I'd get SSH working. If there
are issues with security, then assuming both sides have static IP addresses,
then just allow SSH from and to each machine and no where else. 
 
Greg

-----Original Message-----
From: David Knutson [mailto:dknutson at sydran.com]
Sent: Friday, August 06, 2004 3:14 PM
To: nagios-users at lists.sourceforge.net
Subject: [Nagios-users] How to monitor Nagios itself?


I've completed the setup of a Nagios system to monitor a number of our
internal systems, and it seems to be working great.  Now I want to setup a
system at a remote site to monitor the monitor!  All I want this second
system to do is alert me when the first system goes down.  Of course, I
would also monitor the second system from the first.  Complicating this is
the fact of a firewall between the two systems - for instance, I can't run
check_ping because the firewall stops it.  And I can't use a VPN.  
 
So, can anyone recommend a reliable set of checks to run that will monitor
the monitors and pass through a firewall?

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