Q:

Monitor the number of not leased yet IP address in Window DHCP Server with Nagios in Linux

Sometimes, the IP address are used up and they don't change their state letting the server to allocate all address.
How to use Nagios to monitor the number of not leased yet ip address in pool in window DHCP Server?
Is there any plugin or service in nagios in linux that can do this?

A:

Try dhcpd-pools: http://dhcpd-pools.sourceforge.net/
The documentation doesn't reference it directly, but it has Nagios compatible output mode (since v2.19) and the contrib/ subdirectory of the package has the check command fragment to get you started.

