If you dhcp server is on unix, write some code to parse the dhcp leases file to give you the mapping as dynamic input to your check. eg.
check_something -H `show_dhcp computer1` ...... or check_something -H `check_nrpe -H dhcp_server -c show_dhcp -a computer1` although this would require passing params through NRPE which I am absolutely against as a security risk. Alternatively you could define lots of nrpe definitions on the dhcp server to get around the need for args... show_dhcp_computer1 for example. Depends on how big your environment is really. I actually starting writing something to display dhcp leases but got sidetracked and didn't finish. If you could wait a little while, there is a good chance that you can just use what I am writing, although I started it just to see who was getting dhcp leases on my network to keep an easier eye on it. I will consider your situation and see what can be done about it when writing my plugin which I should pick up again and finish shortly... -h Hari Sekhon Matt Lozier wrote: > Hi Benny, > > Thank you for the reply, but unfortunately I'm not using DNS, and I don't > want to have to :-) > > Just want to know if there is a way to monitor hosts that obtain their IP > address via DHCP. > > I'll continue to see what I can do with this, and will reply to the list if > I find a solution. > > Thanks again, > > > --- > Matt Lozier > Network Administrator > 972.644.2581, ext. 248 > 972.661.2701 fax > > > > The information contained in this message or any attached document is > confidential and intended only for the individual(s) or entity to which it > is addressed. The information should be considered privileged and > confidential. If you are not the intended recipient, you are hereby > notified that any unauthorized use of the information contained in or > transmitted with the communication, or dissemination, distribution, or > copying of this communication is strictly prohibited by law. If you have > received this communication in error, please inform the sender by > immediately returning this communication to the sender and then deleting the > original message and any copy of it in your possession. > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of C. Bensend > Sent: Monday, November 19, 2007 9:45 AM > To: nagios-users@lists.sourceforge.net > Subject: Re: [Nagios-users] Monitoring hosts and DHCP > > > >> I'm monitoring about 30 machines using Nagios with SNMP checks. I also >> have >> a DHCP server casting each machine on the network their IP address on >> start-up. Some machines stay on the majority of the time, others for only >> 4-8 hours a day. The machines generally maintain their same IP address >> over >> time as DHCP is designed to try and give a machine back it's same IP, so >> long as it's available. However, there have been times when a machine has >> changed its IP addresses as a result of using DHCP on this LAN. >> > > http://nagios.sourceforge.net/docs/2_0/xodtemplate.html#host > > Pay particular attention to the address section... You can use > the hostname in place of the IP address, at the cost of doing a > DNS lookup when the host is checked. > > Benny > > > ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
