Buffer Size error in Nagios (nrpe version 3.2.1)

[vy3734]

Hi,
I'm running nrpe version 3.2.1 on the nagios host. I'm trying to get the output from custom script that i'm execute on the agent using nrpe. The output is getting truncated. I have upgraded my nrpe version to 3.2.1 for the very reason that it has a larger buffer size.
command:
/usr/local/nagios/libexec/check_nrpe -H xx.xx.xxx.xxx -c $command -a $argument
This is the error seeing
CHECK_NRPE: Receive buffer size - 16368 bytes received (4 expected).
#Output of the script that is being executed truncated#

Can you please help me figure out the issue here. I tried re-installing nrpe too.

Thanks in advance.

[npolovenko]

@vy3734, Did you upgrade both the client and the agent nrpe? Could you share the plugin with us or send it to me in a private message?

[vy3734]

@npolovenko, yes both my client and agent have nrpe 3.2.1. I don't think i can share the plugin itself, but in a nutshell the plugin is running netstat commands. But out of 100 servers, i only see the issue with 4 or 5 servers, i should've had the same issue with all the servers if there was a plugin issue. Also i observed that 1/5 attempts at executing the nrpe command i am getting the full output of the plugin. I'm guessing it has got something to do with running netstat command in specific intervals.

[tgriep]

It could be that the plugin is timing out so edit the check_nrpe command and add the following to the command to increase the timeout to 59 seconds.

Code: Select all

-t 59

That might help out in the intermittent issue.