NRPE - No output from plugin

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Aezox
Posts: 25
Joined: Fri Feb 09, 2018 9:31 am

NRPE - No output from plugin

Post by Aezox »

Hello everyone,

I'm encountering a strange behavior while trying to perform monitoring with a custom build-in sh script using NRPE.
When I run as nagios user on the remote server the command is properly working

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[nagios@SRV1 libexec]$ ./check_mq.sh -w 10 -c 50 -m ARG1 -q ARG2
OK - Number of messages on ARG2 : 0 (Old Value : 0) | Messages number=0;10;50;0;10000000000
But when I'm running the same script from Nagios or Nagios Mod-Gearman server I get an UNKNOWN error

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[nagios@NAGIOS_SRV /usr/local/nagios/libexec]$ ./check_nrpe -H SRV1 -c check_mq -a '-w 10 -c 50 -m ARG1 -q ARG2'
no output from plugin -
What is strange is this script is properly running on around 200+ servers but not on this one.
It requieres specific rights that have been properly granted otherwise I won't be able to run it locally.
My nrpe.cfg is properly set as I said because it works on other servers.
I've also try using different way with special characters in the command like: check_nrpe -c command -a "args" or check_nrpe -c command -a 'args "ARG" '

Also, using the same remote server with NRPE, I'm able to perform other types of monitoring :

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[nagios@NAGIOS_SRV /usr/local/nagios/libexec]$ ./check_nrpe -H SRV1 -c apm_check_memory
OK - Memory Used: 55% - [ Memory Info - Total: 5962 MB, Used: 3300 MB, Free: 2662 MB ] | 'Memory_Used'=55%;95;98;0;100
[nagios@NAGIOS_SRV /usr/local/nagios/libexec]$ ./check_nrpe -H SRV1 -c apm_check_cpu
OK - CPU Used: 1% - [ CPU Info - vCPU=2, User 1%, System 0%, IO Wait 0% ] | 'CPU_Used'=1%;70;80;0;100 'CPU_User'=1%;70;80;0;100 'CPU_System'=0%;70;80;0;100 'CPU_IOWait'=0%;70;80;0;100
I'm running NRPE v3.2.1 over XINETD
The remote server is a RHEL 5.11
Nagios Core is 4.2.4 with Nagios XI 5.5.2 on RHEL 6.10

Do you guys have any clue on this issue please ?
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