check_disk '/sys not accessable'

[Claudio Kuenzler]

>
> Nagios 3.3.1.  Two identical RHEL6.1 systems, and all I’m trying to do is
> get a total disk space reading.
>

Well the systems are not identical as the manually launched plugin output
of yours shows:

[nagios at 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 at 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%);
>

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));*
  }
}




On Fri, Mar 9, 2012 at 1:16 PM, Boyer, Timothy A. <Timothy.Boyer at opm.gov>wrote:

> It's Permissive, so that can't be it.  Thanks...
>
> -----Original Message-----
> From: Sigmund Brandstaetter [mailto:sb at maniladev.com]
> Sent: Thursday, March 08, 2012 4:12 PM
> To: nagios-users at lists.sourceforge.net
> 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 at 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 at 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.
> > I've run out of ideas. Pointers in the right direction appreciated...
> > 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.
> > http://www.accelacomm.com/jaw/sfnl/114/51521223/
> >
> >
> > _______________________________________________
> > Nagios-users mailing list
> > Nagios-users at 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
>
>
> --
> ---------------------
> Sigmund Brandstaetter
> Check my Blog
> Live from Manila
> http://maniladev.com
> ---------------------
>
>
>
> ------------------------------------------------------------------------------
> 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.
> http://www.accelacomm.com/jaw/sfnl/114/51521223/
> _______________________________________________
> Nagios-users mailing list
> Nagios-users at 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
>
>
> ------------------------------------------------------------------------------
> 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.
> http://www.accelacomm.com/jaw/sfnl/114/51521223/
> _______________________________________________
> Nagios-users mailing list
> Nagios-users at 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
>
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