Help with check_disk is required

[Claudio Kuenzler]

Correct, you have to think the other way around.
You're monitoring for "free" space left. Not for diskspace used. You see
that also in your output:

DISK OK - free space: / 8681 MB (89% inode=95%);| /=967MB;9998;9978;0;10078


89% = 89% free



On Fri, Jul 4, 2014 at 12:16 PM, Gareth Fletcher <
gareth.fletcher at onenet.co.nz> wrote:

> Hey! Is it not -w 10 -c 5? (Instead of -w 90% -c 95%)
>
>
> Sent from my phone on the smartphonetwork.
>
>
> -------- Original message --------
> From: Itai Ganot
> Date:04/07/2014 10:00 PM (GMT+12:00)
> To: help at monitoring-plugins.org
> Subject: Help with check_disk is required
>
> Hi,
>
> I’m using check_disk to monitor our DB server:
> I’m running the command like so:, but I don’t understand when it returns
> me Warning or Critical… as the disk is almost full but the notifications I
> receive are shown as “Disk OK”:
>
> [root at nagios plugins]# /usr/lib64/nagios/plugins/check_nrpe -H
> 10.200.248.11 -c check_disk -a '-W 90% -C 95% -p /'
> DISK OK - free space: / 8681 MB (89% inode=95%); /var/lib/mysql 62617 MB
> (54% inode=99%); /dev 8191 MB (99% inode=99%); /dev/shm 8192 MB (100%
> inode=99%);| /=967MB;;;0;10078 /var/lib/mysql=52190MB;;;0;120951
> /dev=0MB;;;0;8192 /dev/shm=0MB;;;0;8192
> [root at nagios plugins]# /usr/lib64/nagios/plugins/check_nrpe -H
> 10.200.248.11 -c check_disk -a '-w 80 -c 100% -p /'
> DISK CRITICAL - free space: / 8681 MB (89% inode=95%);|
> /=967MB;9998;0;0;10078
> [root at nagios plugins]# /usr/lib64/nagios/plugins/check_nrpe -H
> 10.200.248.11 -c check_disk -a '-w 80 -c 100 -p /'
> DISK OK - free space: / 8681 MB (89% inode=95%);| /=967MB;9998;9978;0;10078
> [root at nagios plugins]# /usr/lib64/nagios/plugins/check_nrpe -H
> 10.200.248.11 -c check_disk -a '-w 90 -c 100 -p /'
> DISK OK - free space: / 8681 MB (89% inode=95%);| /=967MB;9988;9978;0;10078
> [root at nagios plugins]# /usr/lib64/nagios/plugins/check_nrpe -H
> 10.200.248.11 -c check_disk -a '-w 95 -c 100 -p /'
> DISK OK - free space: / 8681 MB (89% inode=95%);| /=967MB;9983;9978;0;10078
> [root at nagios plugins]# /usr/lib64/nagios/plugins/check_nrpe -H
> 10.200.248.11 -c check_disk -a '-w 96 -c 100 -p /'
> DISK OK - free space: / 8681 MB (89% inode=95%);| /=967MB;9982;9978;0;10078
> [root at nagios plugins]# /usr/lib64/nagios/plugins/check_nrpe -H
> 10.200.248.11 -c check_disk -a '-w 10 -c 20 -p /'
> DISK OK - free space: / 8681 MB (89% inode=95%);|
> /=967MB;10068;10058;0;10078
> [root at nagios plugins]# /usr/lib64/nagios/plugins/check_nrpe -H
> 10.200.248.11 -c check_disk -a '-w 80 -c 90 -p /'
> DISK OK - free space: / 8681 MB (89% inode=95%);| /=967MB;9998;9988;0;10078
> [root at nagios plugins]# /usr/lib64/nagios/plugins/check_nrpe -H
> 10.200.248.11 -c check_disk -a '-w 80% -c 90% -p /'
> DISK CRITICAL - free space: / 8681 MB (89% inode=95%);|
> /=967MB;2015;1007;0;10078
> [root at nagios plugins]# /usr/lib64/nagios/plugins/check_nrpe -H
> 10.200.248.11 -c check_disk -a '-w 20% -c 10% -p /'
> DISK OK - free space: / 8681 MB (89% inode=95%);| /=967MB;8062;9070;0;10078
> [root at nagios plugins]# /usr/lib64/nagios/plugins/check_nrpe -H
> 10.200.248.11 -c check_disk -a '-W 20% -C 10% -p /'
> DISK OK - free space: / 8681 MB (89% inode=95%); /var/lib/mysql 62617 MB
> (54% inode=99%); /dev 8191 MB (99% inode=99%); /dev/shm 8192 MB (100%
> inode=99%);| /=967MB;;;0;10078 /var/lib/mysql=52190MB;;;0;120951
> /dev=0MB;;;0;8192 /dev/shm=0MB;;;0;8192
> [root at nagios plugins]# /usr/lib64/nagios/plugins/check_nrpe -H
> 10.200.248.11 -c check_disk -a '-w 20% -c 10% -p /'
> DISK OK - free space: / 8681 MB (89% inode=95%);| /=967MB;8062;9070;0;10078
> [root at nagios plugins]# /usr/lib64/nagios/plugins/check_nrpe -H
> 10.200.248.11 -c check_disk -a '-M -w 20% -c 10% -p /'
> DISK OK - free space: /dev/ploop18793p1 8681 MB (89% inode=95%);|
> /dev/ploop18793p1=967MB;8062;9070;0;10078
> [root at nagios plugins]# /usr/lib64/nagios/plugins/check_nrpe -H
> 10.200.248.11 -c check_disk -a '-w 20% -c 10% -p /'
> DISK OK - free space: / 8681 MB (89% inode=95%);| /=967MB;8062;9070;0;10078
> [root at nagios plugins]# /usr/lib64/nagios/plugins/check_nrpe -H
> 10.200.248.11 -c check_disk -a '-w 80 -c 90 -p /'
> DISK OK - free space: / 8681 MB (89% inode=95%);| /=967MB;9998;9988;0;10078
> [root at nagios plugins]#
> [root at nagios plugins]#
> [root at nagios plugins]# /usr/lib64/nagios/plugins/check_nrpe -H
> 10.200.248.11 -c check_disk -a '-W 89 -c 90 -p /'
> DISK OK - free space: / 8681 MB (89% inode=95%);| /=967MB;;9988;0;10078
> [root at nagios plugins]# /usr/lib64/nagios/plugins/check_nrpe -H
> 10.200.248.11 -c check_disk -a '-w 89 -c 90 -p /'
> DISK OK - free space: / 8681 MB (89% inode=95%);| /=967MB;9989;9988;0;10078
> [root at nagios plugins]# /usr/lib64/nagios/plugins/check_nrpe -H
> 10.200.248.11 -c check_disk -a '-w 89 -C 95 -p /'
> DISK OK - free space: / 8681 MB (89% inode=95%); /var/lib/mysql 62617 MB
> (54% inode=99%); /dev 8191 MB (99% inode=99%); /dev/shm 8192 MB (100%
> inode=99%);| /=967MB;9989;;0;10078 /var/lib/mysql=52190MB;120862;;0;120951
> /dev=0MB;8103;;0;8192 /dev/shm=0MB;8103;;0;8192
> [root at nagios plugins]# /usr/lib64/nagios/plugins/check_nrpe -H
> 10.200.248.11 -c check_disk -a '-w 89 -c 95 -p /'
> DISK OK - free space: / 8681 MB (89% inode=95%);| /=967MB;9989;9983;0;10078
> [root at nagios plugins]# /usr/lib64/nagios/plugins/check_nrpe -H
> 10.200.248.11 -c check_disk -a '-w 89 -c 95 -p /var/lib/mysql'
> DISK OK - free space: /var/lib/mysql 62617 MB (54% inode=99%);|
> /var/lib/mysql=52190MB;120862;120856;0;120951
> [root at nagios plugins]# /usr/lib64/nagios/plugins/check_nrpe -H
> 10.200.248.11 -c check_disk -a '-w 50 -c 95 -p /var/lib/mysql'
> DISK OK - free space: /var/lib/mysql 62617 MB (54% inode=99%);|
> /var/lib/mysql=52190MB;120901;120856;0;120951
> [root at nagios plugins]# /usr/lib64/nagios/plugins/check_nrpe -H
> 10.200.248.11 -c check_disk -a '-w 50 -c 80 -p /var/lib/mysql'
> DISK OK - free space: /var/lib/mysql 62617 MB (54% inode=99%);|
> /var/lib/mysql=52190MB;120901;120871;0;120951
> [root at nagios plugins]#
>
> I’m trying to set the notification like so:
> Check_disk –a ‘-w 85% -c 90% /’
> Then it should return Disk Warning because 89% disk is in use and it’s
> more than 85% but instead I receive an OK notification…
> What could be the cause?
>
> Thanks
>
> Itai
>
>
>
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