Nagios Support Forum

Posted: **Tue May 08, 2018 2:06 pm**

Having a bit of a strange issue using check_disk and haven't been able to find anything about this problem so far. I'm just trying to monitor an aggregate total of all /dev/* fs on a given system. For the un-aggregated totals, I run the following from nagios server:

$ /usr/lib/nagios/plugins/check_nrpe -H x.x.x.x -c check_disk -a '-f -w 20000 -c 10000 -R '^/dev/*''

DISK CRITICAL - free space: / 19353 MB (59% inode=88%); # Rest of output is ok, just shows 3 disks.

Now, in order to aggregate the space, I simply added a group option:

$ /usr/lib/nagios/plugins/check_nrpe -H x.x.x.x -c check_disk -a '-f -w 20000 -c 10000 -g 'Aggregate Disks' -R '^/dev/*''
DISK CRITICAL - /run/user/1000/gvfs is not accessible: Permission denied

I'm not sure why grouping throws this issue? Some of the things I've tried thus far:
-I 'gvfs' . # Or .gvfs, *gvfs, etc....
--exclude-type=gvfs

Any help would be greatly appreciated.

Posted: **Tue May 08, 2018 2:59 pm**

Just as a heads up if others run into this issue.

I'm not actually sure if this is a bug in check_disk, or simply my misunderstanding of the -g arg. But here is what I've found:

Original method of checking:
/usr/lib/nagios/plugins/check_nrpe -H x.x.x.x -c check_disk -a '-f -w 20000 -c 10000 -g 'Aggregate Disk' -R '^/dev/s*' -i '.gvfs''
DISK CRITICAL - /run/user/1000/gvfs is not accessible: Permission denied

And what actually works:
/usr/lib/nagios/plugins/check_nrpe -H x.x.x.x -c check_disk -a '-f -w 20000 -c 10000 -g 'AggregateDisk' -R '^/dev/s*' -i '.gvfs''
DISK OK - free space: AggregateDisk 116656 MB (48% inode=95%);| AggregateLocalDisk=125917MB;222575;232575;0;242575

Note the difference, there is spacing within the -g option where it fails, and no spacing when it works. The only reason I stumbled upon this is because doing some additional test runs I simply typed 'test' for the group.

Anyways, if anyone has insight as to if this is expected behavior and I'm possibly misunderstanding it, would still appreciate it.

Thanks,

Posted: **Wed May 09, 2018 3:16 pm**

Have you tried running it locally to see if it makes a difference? I tried both of your commands and here is the output:

Code: Select all

[root@localhost libexec]# ./check_disk -f -w 20000 -c 10000 -g 'Aggregate Disk' -R '^/dev/s*' -i '.gvfs'
DISK OK - free space: Aggregate Disk 30542 MB (80.76% inode=95%);| 'Aggregate Disk'=7143MB;17686;27686;0;37686

[root@localhost libexec]# ./check_disk -f -w 20000 -c 10000 -g 'AggregateDisk' -R '^/dev/s*' -i '.gvfs'
DISK OK - free space: AggregateDisk 30542 MB (80.76% inode=95%);| AggregateDisk=7143MB;17686;27686;0;37686

What version of check_disk do you have?

Code: Select all

/usr/lib/nagios/plugins/check_disk --version

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