Additional infos from Matthias (mess) from german nagios forum. (He has mail problem at the moment and can not post by himself) ******************************************************************************* running the last cvs changes on our test server I noticed that $HOSTADDRESS$ macro intermittently is not resolved correctly. I get numerous messages in nagios.log [1190372305] HOST ALERT: host1;DOWN;SOFT;1;check_icmp: Failed to resolve -w [1190372345] HOST ALERT: host1;UP;SOFT;2;OK - NNN.NNN.NNN.NNN: rta 0.285ms, lost 0% check_icmp is defined like this: $USER1$/check_icmp -H $HOSTADDRESS$ -w $ARG1$ -c $ARG2$ ******************************************************************************** Best regards Thomas P Please consider the environmental impact of needlessly printing this e-mail. <table width=100%> <tr valign=top> <td width=40%>Thomas Stolle <it0a60@retail-sc.com> Sent by: nagios-devel-bounces@lists.sourceforge.net 21.09.2007 12:52 <table border> <tr valign=top> <td bgcolor=white> <div align=center>Please respond to Nagios Developers List <nagios-devel@lists.sourceforge.net></div></table> <td width=59%> <table width=100%> <tr valign=top> <td> <div align=right>To</div> <td>nagios-devel@lists.sourceforge.net <tr valign=top> <td> <div align=right>cc</div> <td>nagios-devel-bounces@lists.sourceforge.net <tr valign=top> <td> <div align=right>Subject</div> <td>Re: [Nagios-devel] nagios 3 host checks logic problem on some kernels/distros</table> <table> <tr valign=top> <td> <td></table> </table> Dear List today I installed the new CVS to get rid of the host check logic problem and the high cpu load. I can confirm that load is in a normal range now but after installing CVS someting with host- and servicechecks went terribly wrong. Many checks return a critical result even if the checked system or service is up. (I compared with a second nagios server running 2.9. Everything was ok there.) I executed the checkcommands manual from the commandline and received correct values and an OK state, while Nagios said it is critical. Caused by this I switched back to nagios 3.0b3. All services and hosts returned to a normal state but of course CPU load is high again now. Best regards Thomas P Please consider the environmental impact of needlessly printing this e-mail. <table width=100%> <tr valign=top> <td width=39%>Ethan Galstad <nagios@nagios.org> Sent by: nagios-devel-bounces@lists.sourceforge.net 20.09.2007 23:20 <table border=4> <tr valign=top> <td bgcolor=white> <div align=center>Please respond to nagios@nagios.org; Please respond to Nagios Developers List <nagios-devel@lists.sourceforge.net></div></table> <td width=60%> <table width=100%> <tr valign=top> <td width=8%> <div align=right>To</div> <td width=91%>Nagios Developers List <nagios-devel@lists.sourceforge.net> <tr valign=top> <td> <div align=right>cc</div> <td> <tr valign=top> <td> <div align=right>Subject</div> <td>Re: [Nagios-devel] nagios 3 host checks logic problem on some kernels/distros</table> <table> <tr valign=top> <td> <td></table> </table> <tt> Thanks all - I found the cause of the problem and fixed it. A patch will be in CVS shortly. Thomas Stolle wrote: > > From: SCHAER Frederic <frederic.schaer <at> cea.fr> > Subject: *nagios 3 host checks logic problem on some kernels/distros* > <http://news.gmane.org/find-root.php?message_id=%3cEA04FF699CD5274E9EC52CB5EC0508707667A0%40DIODON.extra.cea.fr%3e>* > Newsgroups: <http://news.gmane.org/gmane.network.nagios.devel>* > <http://news.gmane.org/gmane.network.nagios.devel>*MailScanner has > detected a possible fraud attempt from "news.gmane.org" claiming to be* > *gmane.network.nagios.devel* > <http://news.gmane.org/gmane.network.nagios.devel>* > Date: 2007-09-10 16:17:30 GMT (1 week, 15 hours and 23 minutes ago) * > > *Hi, * > > * * > > *I think I identified a problem (but not and the solution) on the nagios > 3 source tree… * > > *I tried with both the 3.0b3 and cvs HEAD source files and could not get > rid of the problem. * > > *I’m running a 2.4.21 kernel on a RHEL3 box. * > > * * > > *What happens is that as soon as I start nagios 3, it starts eating all > of the *CPU*. * > [snip] > > *I have 53 hosts defined, I don’t understand why nagios is checking ever > and ever the same host… and why this is not happening on all systems. * > > * * > > *De-activating host checks magically “solves” the problem. * > > * * > > *I just found out that commenting hosts “check_command” caused this > behaviour (with host_checks_enabled=true), and that defining a correct > check_command prevented nagios from being so *CPU* hungry… * > > * * > > *Hope I helped… * > > * * > > *Cheers * > > > > Dear List, > > I can confirm the problem Frederic reported. > I am using Nagios 3.0b3 on CentOS 4.4 > After starting nagios, the process catches nearly 100 % CPU (See > top-output below) > Disableing hostchecks let the process return to normal values. > As far as I can remember, the problem did not occour with nagios3.0a > (but I can not verify at the moment) > > Tasks: 89 total, 3 running, 86 sleeping, 0 stopped, 0 zombie > Cpu(s): 26.0% us, 1.3% sy, 0.0% ni, 72.6% id, 0.0% wa, 0.1% hi, > 0.0% si > Mem: 4041580k total, 1373844k used, 2667736k free, 60200k buffers > Swap: 4192956k total, 0k used, 4192956k free, 1137348k cached > > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND > 28617 nagios 25 0 29756 10m 1056 R 96 0.3 17:12.48 nagios > 1 root 16 0 4752 552 460 S 0 0.0 0:02.75 init > 2 root RT 0 0 0 0 S 0 0.0 0:00.04 migration/0 > > > Thomas > > > P *Please consider the environmental impact of needlessly printing this > e-mail.* > Ethan Galstad, Nagios Developer --- Email: nagios@nagios.org Website: http://www.nagios.org ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. 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