Nagios Support Forum

Posted: **Fri Aug 02, 2019 2:06 am**

Hi,

I'm getting this error in one of the servers I'm monitoring.

DISK CRITICAL - /sys/kernel/debug/tracing is not accessible: Permission denied

host.cfg

Code: Select all

define service{
        use                                     generic-service
        host_name                          server
        service_description             Disk Spaces
        check_command                 check_nrpe!check_disk
        contact_groups                   server-monitoring
        }

client.cfg

Code: Select all

command[check_hda1]=/usr/local/nagios/libexec/check_disk -w 20% -c 10% -p /
command[check_disk]=/usr/local/nagios/libexec/check_disk -w 5% -c 3% -A -I '/storagedisk/
command[check_mnt]=/usr/local/nagios/libexec/check_disk -w 5% -c 3% -p /mnt

commands.cfg

Code: Select all

define command{
    command_name    check_disk
    command_line    $USER1$/check_nrpe -H '$HOSTADDRESS$' -t 30 -c check_disk
     }

Please help me in resolving this issue

Regards,
Siddarth Hegde

Posted: **Sun Aug 04, 2019 9:10 am**

Hello,

Is SELinux active on the monitored server? Which user is running the NRPE service? Can you test that command logged in with that user and attest if the results are the same as in executing remotely (from Nagios)?

Posted: **Mon Aug 05, 2019 6:45 am**

Hi @Rfferrao13,

I'm getting this

Nagios Server

Code: Select all

user@nagios:/usr/local/nagios/libexec# ./check_nrpe -H x.x.x.x -c check_disk
DISK CRITICAL - /sys/kernel/debug/tracing is not accessible: Permission denied

Client Server

Code: Select all

user@clientserver:/etc/selinux# sestatus
SELinux status:                 disabled

Code: Select all

user@clientserver:/usr/local/nagios/libexec# ./check_nrpe -H 127.0.0.1 -c check_disk
DISK CRITICAL - /sys/kernel/debug/tracing is not accessible: Permission denied

Regards,
Siddarth Hegde

Posted: **Mon Aug 05, 2019 7:54 am**

From your example the check_disk command has a non-closed quote

Code: Select all

command[check_disk]=/usr/local/nagios/libexec/check_disk -w 5% -c 3% -A -I '/storagedisk/

Also, you may need to add the path that is not accessible to the I flag

Code: Select all

command[check_disk]=/usr/local/nagios/libexec/check_disk -w 5% -c 3% -A -I '/storagedisk/' -I '/sys/kernel/debug/tracing'

then restart NRPE

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