Check_disk issue

[Siddharth Hegde]

Hi,

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

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

host.cfg

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

client.cfg

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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

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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

[Rfferrao13]

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)?

[Siddharth Hegde]

Hi @Rfferrao13,

I'm getting this

Nagios Server

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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

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

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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

[scottwilkerson]

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

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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

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

then restart NRPE