NRPE 3.x Issue

[socgenindia]

we have upgraded our nrpe 2.15 to nrpe 3.2.1 and also upgraded nagios plugin. We are monitoring windows server using the NSClient version 4.4.23 . However i am getting below error even after making payload length in ini file. followed the instruction from below link.

https://support.nagios.com/kb/article.php?id=518


/usr/local/nagios/libexec/check_nrpe -2 -P 8192 -H hostname -p 12489
CHECK_NRPE: Receive underflow - only 1026 bytes received (4 expected).

[npolovenko]

Hello, @socgenindia. If you're using check_nrpe then the port number is 5666, 12489 is the nsclient port, so you'd need to use check_nt command instead. You don't really need to specify these ports. Also, what's the command that you're running? Is it just:

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/usr/local/nagios/libexec/check_nrpe -2 -P 8192 -H hostname -p 12489

Try this instead:

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/usr/local/nagios/libexec/check_nrpe -H hostname

If that doesn't work please upload the nsclient.ini file and nsclient.log file from the windows server.

[socgenindia]

sorry that was a typo, command that i executed is below.

/usr/local/nagios/libexec/check_nrpe -2 -P 8192 -H hostname -p 5666
CHECK_NRPE: Receive underflow - only 1026 bytes received (4 expected).

[npolovenko]

@socgenindia, Can you send in nsclient.ini file and nsclient.log files from the Windows server?
Also, try this command without any arguments:

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/usr/local/nagios/libexec/check_nrpe -H hostname