<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <TITLE>RE: [Nagios-users] Hosts with no services?</TITLE> <META content="MSHTML 6.00.2800.1126" name=GENERATOR></HEAD> <BODY> <DIV>So create a passive "fping" service for those hosts and wrap a script around fping to pipe the output into nagios.</DIV> <DIV>Nagios will then only spawn off its own ping check when your "service" ping fails. Not perfect, but until passive</DIV> <DIV>host checks in 2.x it works pretty good...</DIV> <BLOCKQUOTE dir=ltr style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px"> <DIV class=OutlookMessageHeader dir=ltr align=left>-----Original Message----- From: John Senior [mailto:js@irishbroadband.ie] Sent: Thursday, June 26, 2003 5:16 AM To: nagios-users@lists.sourceforge.net Subject: RE: [Nagios-users] Hosts with no services? </DIV> I disagree - I have many many devices on my network that I just need to know are alive with a ping - these devices just provide connectivity, things like switches, customer routers etc. A simple ping is all that's required, no more. I have plenty of hosts with more complex services (web, mail, dns etc.) that Nagios fits fine - but sometimes a ping is enough. I too am using fping to provide the kind of info that I would rather integrate into Nagios. Regards, John. -- John Senior <js@irishbroadband.ie> > -----Original Message----- > From: nagios-users-admin@lists.sourceforge.net > [<A href="mailto:nagios-users-admin@lists.sourceforge.net">mailto:nagios-users-admin@lists.sourceforge.net</A>]On Behalf Of Dr. Dave > Blunt > Sent: 26 June 2003 04:54 > To: 'Carroll, Jim P [Contractor]'; 'Furnish, Trever G' > Cc: 'Nagios-Users List (E-mail)' > Subject: RE: [Nagios-users] Hosts with no services? > > > Hi, > > I think I agree with Jim. I guess I don't see why you would care if a > system was up if you didn't care about at least one service - unless > that 'service' is keeping the room warm. Why not pull the power cord > now? If you're not responsible for making sure the system is up or > tracking some metric about specific services then why even > configure it > in Nagios? > > $.02 > > > Dr. Dave Blunt > Manager of Information Technology, Virage, Inc. > 411 Borel Ave., Suite 100S > San Mateo, CA 94402 > > -----Original Message----- > From: nagios-users-admin@lists.sourceforge.net > [<A href="mailto:nagios-users-admin@lists.sourceforge.net">mailto:nagios-users-admin@lists.sourceforge.net</A>] On Behalf > Of Carroll, > Jim P [Contractor] > Sent: Wednesday, June 25, 2003 5:54 PM > To: Furnish, Trever G > Cc: Nagios-Users List (E-mail) > Subject: RE: [Nagios-users] Hosts with no services? > > > I suppose you could use check_dummy for your service check. Caveat: > I've experienced hosts which are pingable but are otherwise > worthless/dead. You've stated yourself that you need to know that the > box is alive. So what constitutes 'alive'? If I can ping a box but a > user cannot login to that box, is it still alive? If I can't ping the > box but when I walk over to it, there are blinking lights and whirring > fans, is it still alive? If the main HDD activity light is flickering > but bashing away on the console doesn't get me any response, > is it still > alive? (These are purely rhetorical questions.) > > If you'd like to know within 5 minutes that a user cannot use service > XYZ, then configure Nagios to monitor the health of that service and > check on it frequently. If you don't mind that a user cannot > login to a > host between 5pm and 9am, then configure Nagios to not bother checking > between those times (thus cutting down on 'unnecessary' CPU > and network > traffic). > > If you don't mind that your root filesystem is sitting at 99.99% > capacity, then don't bother with check_disk. If you don't > mind the load > average hitting 20 frequently, then don't bother with check_load. If > you don't mind that a HDD is starting to complain about bad > blocks, then > don't bother with check_log2. > > Yes, I'm playing devil's advocate here. If after everything I've said > you still find keeping a finger on the pulse of the corporate > systems to > be uninteresting, then take another look at check_dummy, and > replace the > check_ping service with it. (Bonus: You'll cut down on > network traffic > and remote processing. ;) > > jc > > > > -----Original Message----- > > From: Furnish, Trever G [<A href="mailto:TGFurnish@herff-jones.com">mailto:TGFurnish@herff-jones.com</A>] > > Sent: Wednesday, June 25, 2003 2:16 PM > > To: Carroll, Jim P [Contractor] > > Cc: Nagios-Users List (E-mail) > > Subject: RE: [Nagios-users] Hosts with no services? > > > > > > But why should you monitor something you don't care about, > generating > > needless traffic and cpu overhead? > > > > I too do a ping in the host check and a redundant ping > > service check - but > > it's still a waste. Sure there are other services on the > > box, but I don't > > need to monitor them -- all I need is to know the box is > > alive, in which > > case the extra ping is pointless and wastes resources. > > > > In a previous life I did this with a little shell script and > > fping. You > > lose the benefit of being able to acknowledge individual > > hosts that way > > though. Then again, if you allow your techs to log into the > > system doing > > fping, then adding a host a file listing those to ignore > becomes easy. > > > > -t. > > > ------------------------------------------------------- > This SF.Net email is sponsored by: INetU > Attention Web Developers & Consultants: Become An INetU > Hosting Partner. > Refer Dedicated Servers. We Manage Them. You Get 10% Monthly > Commission! > INetU Dedicated Managed Hosting <A href="http://www.inetu.net/partner/index.php">http://www.inetu.net/partner/index.php</A> > _______________________________________________ > Nagios-users mailing list > Nagios-users@lists.sourceforge.net > <A href="https://lists.sourceforge.net/lists/listinfo/nagios-users">https://lists.sourceforge.net/lists/listinfo/nagios-users</A> > ::: Please include Nagios version, plugin version (-v) and OS when > reporting any issue. > ::: Messages without supporting info will risk being sent to /dev/null > > > > > ------------------------------------------------------- > This SF.Net email is sponsored by: INetU > Attention Web Developers & Consultants: Become An INetU > Hosting Partner. > Refer Dedicated Servers. We Manage Them. You Get 10% Monthly > Commission! > INetU Dedicated Managed Hosting <A href="http://www.inetu.net/partner/index.php">http://www.inetu.net/partner/index.php</A> > _______________________________________________ > Nagios-users mailing list > Nagios-users@lists.sourceforge.net > <A href="https://lists.sourceforge.net/lists/listinfo/nagios-users">https://lists.sourceforge.net/lists/listinfo/nagios-users</A> > ::: Please include Nagios version, plugin version (-v) and OS > when reporting any issue. > ::: Messages without supporting info will risk being sent to /dev/null > </BLOCKQUOTE></BODY></HTML>