<blockquote style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex" class="gmail_quote">Nagios 3.3.1. Two identical RHEL6.1 systems, and all I’m trying to do is get a total disk space reading. </blockquote> Well the systems are not identical as the manually launched plugin output of yours shows: <blockquote style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex" class="gmail_quote"> <div>[nagios@server1 ~)$ /usr/lib/nagios/plugins/check_disk -w20% -c10%</div> <div>DISK OK - free space: / 24673 MB (98% inode=99%); /dev/shm 12007 MB (100% inode=99%); /boot 154 MB (65% inode=99%); /home 7507 MB (98% inode=99%); </div></blockquote> <div> </div> <div><blockquote style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex" class="gmail_quote">[nagios@server2 /]$ /usr/lib/nagios/plugins/check_disk -w20% -c10% DISK OK - free space: / 22004 MB (77% inode=96%); /dev/shm 498 MB (100% inode=99%); /boot 387 MB (84% inode=99%); </blockquote> Note the /home mount point. Have you checked the servers for the different mount points? It looks like on server2 /sys is seen as a partition or mount point while on server1 the check seems to "ignore" it successfully? Any idea why server2 thinks /sys is a partition or mount point? Can you try to launch it specifically on /sys and output the results (on both servers)? ./check_disk -w 10% -c 5% -p /sys Then try to exclude /sys from the check: ./check_disk -w 10% -c 5% -x /sys By the way the error you're seeing seems to be triggered from this code (at the bottom of the source file): void stat_path (struct parameter_list *p) { /* Stat entry to check that dir exists and is accessible */ if (verbose >= 3) printf("calling stat on %s\n", p->name); if (stat (p->name, &stat_buf[0])) { if (verbose >= 3) printf("stat failed on %s\n", p->name); printf("DISK %s - ", _("CRITICAL")); die (STATE_CRITICAL, _("%s %s: %s\n"), p->name, _("is not accessible"), strerror(errno)); } } </div> <div class="gmail_quote">On Fri, Mar 9, 2012 at 1:16 PM, Boyer, Timothy A. <<a href="mailto:Timothy.Boyer@opm.gov">Timothy.Boyer@opm.gov</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">It's Permissive, so that can't be it. Thanks... <div><div></div><div class="h5"> -----Original Message----- From: Sigmund Brandstaetter [mailto:<a href="mailto:sb@maniladev.com">sb@maniladev.com</a>] Sent: Thursday, March 08, 2012 4:12 PM To: <a href="mailto:nagios-users@lists.sourceforge.net">nagios-users@lists.sourceforge.net</a> Subject: Re: [Nagios-users] check_disk '/sys not accessable' Tim, How about SELinux, is it maybe on only on the one that is making the problem? Cheers Sigmund On 3/9/2012 00:49, Boyer, Timothy A. wrote: > Nagios 3.3.1. Two identical RHEL6.1 systems, and all I'm trying to do > is get a total disk space reading. So nrpe is running on both, with > the identical command in nrpe.cfg: > command[check_all_disk]=/usr/lib/nagios/plugins/check_disk -w $ARG1$ > -c $ARG2$ > command[check_all_disk]=/usr/lib/nagios/plugins/check_disk -w $ARG1$ > -c $ARG2$ > Running as user nagios from the central server. > One works fine: > -sh-4.1$ /usr/lib/nagios/plugins/check_nrpe -H server1 -c > check_all_disk -a 20% 10% > DISK OK - free space: / 24673 MB (98% inode=99%); /dev/shm 12007 MB > (100% inode=99%); /boot 154 MB (65% inode=99%); /home 7507 MB (98% > inode=99%); > the other gives me this: > -sh-4.1$ /usr/lib/nagios/plugins/check_nrpe -H server2 -c > check_all_disk -a 20% 10% > DISK CRITICAL - /sys is not accessible: Permission denied > Identical versions of nrpe (2.12); a diff on check_disk shows they're > both identical; both commands work correctly locally run as user Nagios: > [nagios@server1 ~)$ /usr/lib/nagios/plugins/check_disk -w20% -c10% > DISK OK - free space: / 24673 MB (98% inode=99%); /dev/shm 12007 MB > (100% inode=99%); /boot 154 MB (65% inode=99%); /home 7507 MB (98% > inode=99%); > [nagios@server2 /]$ /usr/lib/nagios/plugins/check_disk -w20% -c10% > DISK OK - free space: / 22004 MB (77% inode=96%); /dev/shm 498 MB > (100% inode=99%); /boot 387 MB (84% inode=99%); > Multiple other nrpe commands running on both; this is the only thing > they're having problems with. > /sys is user-readable in both. Logs show nothing. </div></div>> I've run out of ideas. Pointers in the right direction appreciated... <div><div></div><div class="h5">> Tim > > > ------------------------------------------------------------------------------ > Virtualization& Cloud Management Using Capacity Planning > Cloud computing makes use of virtualization - but cloud computing > also focuses on allowing computing to be delivered as a service. > <a href="http://www.accelacomm.com/jaw/sfnl/114/51521223/" target="_blank">http://www.accelacomm.com/jaw/sfnl/114/51521223/</a> > > > _______________________________________________ > Nagios-users mailing list > <a href="mailto:Nagios-users@lists.sourceforge.net">Nagios-users@lists.sourceforge.net</a> > <a href="https://lists.sourceforge.net/lists/listinfo/nagios-users" target="_blank">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 -- --------------------- Sigmund Brandstaetter Check my Blog Live from Manila <a href="http://maniladev.com" target="_blank">http://maniladev.com</a> --------------------- ------------------------------------------------------------------------------ Virtualization & Cloud Management Using Capacity Planning Cloud computing makes use of virtualization - but cloud computing also focuses on allowing computing to be delivered as a service. <a href="http://www.accelacomm.com/jaw/sfnl/114/51521223/" target="_blank">http://www.accelacomm.com/jaw/sfnl/114/51521223/</a> _______________________________________________ Nagios-users mailing list <a href="mailto:Nagios-users@lists.sourceforge.net">Nagios-users@lists.sourceforge.net</a> <a href="https://lists.sourceforge.net/lists/listinfo/nagios-users" target="_blank">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 ------------------------------------------------------------------------------ Virtualization & Cloud Management Using Capacity Planning Cloud computing makes use of virtualization - but cloud computing also focuses on allowing computing to be delivered as a service. <a href="http://www.accelacomm.com/jaw/sfnl/114/51521223/" target="_blank">http://www.accelacomm.com/jaw/sfnl/114/51521223/</a> _______________________________________________ Nagios-users mailing list <a href="mailto:Nagios-users@lists.sourceforge.net">Nagios-users@lists.sourceforge.net</a> <a href="https://lists.sourceforge.net/lists/listinfo/nagios-users" target="_blank">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 </div></div></blockquote></div>