Linux NRPE: unable to read output

[dlukinski]

Used wizard-based configuration for Linux-client monitoring (works for my CentOS)

Last login: Wed Nov 25 17:06:51 2015
[root@fikc-nagxidev01 ~]# /usr/local/nagios/libexec/check_nrpe -H 10.x.x.28
NRPE v2.15
[root@fikc-nagxidev01 ~]# /usr/local/nagios/libexec/check_nrpe -H 10.x.x.28 -t 30 -c check_cpu_stats -a '-w 85 -c 95'
NRPE: Unable to read output (same issue with CPU stats, processes, Memory, Open Files, Yum, etc..)

OS is possibly RedHat EL 6.5 (have no direct access to it)

What to check next?

[Box293]

Please read through this guide as it should address your issue:

https://assets.nagios.com/downloads/nag ... utions.pdf

If this doesn't fix your problem, please let us know what you tried (including commands typed) and what the output/result is.

[raamardhani7]

Please check in the nrpe.cfg file in the remote server, whether you have defined the parameters in it. If possible, please post your nrpe.cfg file.

[dlukinski]

Please check in the nrpe.cfg file in the remote server, whether you have defined the parameters in it. If possible, please post your nrpe.cfg file.

[dlukinski]

Please check in the nrpe.cfg file in the remote server, whether you have defined the parameters in it. If possible, please post your nrpe.cfg file.

[raamardhani7]

Please check in the nrpe.cfg file in the remote server, whether you have defined the parameters in it. If possible, please post your nrpe.cfg file.

Please define the command in the nrpe.cfg

Code: Select all

command[check_cpu_stats]=/usr/local/nagios/libexec/check_cpu_stats $ARG1$

Agrument1 I defined as -w <warning threshold> -c <Critical threshold>

Similarly for the other parameters add them in nrpe.cfg file. Once done execute the below command.

Code: Select all

service xinetd restart

[Box293]

Please check in the nrpe.cfg file in the remote server, whether you have defined the parameters in it. If possible, please post your nrpe.cfg file.

Please define the command in the nrpe.cfg

Code: Select all

command[check_cpu_stats]=/usr/local/nagios/libexec/check_cpu_stats $ARG1$

Agrument1 I defined as -w <warning threshold> -c <Critical threshold>

Similarly for the other parameters add them in nrpe.cfg file. Once done execute the below command.

Code: Select all

service xinetd restart

Make sure that these have not been defined in the /usr/local/nagios/etc/nrpe/common.cfg file already.

Please read through this guide as it should address your issue:

https://assets.nagios.com/downloads/nag ... utions.pdf

If this doesn't fix your problem, please let us know what you tried (including commands typed) and what the output/result is.

It would be good to see what testing you have tried.

[dlukinski]

Took some time to get my hand on another RHEL 6.5 system, which exhibits same behaviour:

After NRPE client install (per XI manual), "CPU Stats", "Memory Usage", "Open Files" and processes such as Java are not operational. (now same for 2 x RHEL EL 6.5)
- so to me this is NRPE client out of the box behaviour on this Linux platform.
- CPU check is defined in common.cfg (attached)

How to overcome this (we have MANY RHEL installs - they might all work same way if we try NRPE installs now)?

[hsmith]

Did you install NRPE manually, and compile it youself, or did you run the fullinstall script?

[dlukinski]

Did you install NRPE manually, and compile it youself, or did you run the fullinstall script?

we ran fullinstall script in both cases (same results with many checks missing)