check_networking

I couldn't find an easy way to check whether all interfaces of a host are up and running from the -inside-, so I wrote a Nagios plugin to do this.


Naturally you could also try to ping all of the IP addresses of all of these network cards, but this isn't always possible. Lord knows how many routing issues I had fight through to get our current IP set monitored. I guess using this script is a bit easier :)


The script was tested on Redhat ES3, Mac OSX and Solaris. Its basic requirement is the Korn shell (due to some conversions happening inside the script). On Linux/RH you'll need mii-tool (and sudo) and on Solaris you'll need Perl (for one lousy piece of math :p ).


EDIT:

Oh! Just like my other recent Nagios scripts, check_load2 comes with a debugging option. Set $DEBUG at the top of the file to anything larger than zero and the script will dump information at various stages of its execution.