Linux monitoring - Nagios and nrpe [closed]

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The communication between nagios and a nrpe agent installed in a monitored machined can be without SSL? My problem is that I have two different versions of linux and cant find compatible versions of libssl-dev to do that.

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Yes. The check_nrpe plugin, which is used to call the command check on the remote host (defined in the nrpe.cfg file), supports the -n option: Do not use SSL.

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Yes we can install check_nrpe without using ssl. Look for the syntax below:

Get the latest version of check_nrpe and untar the package:

tar xzf check_nrpe-2.16.tar.gz
cd check_nrpe-2.16
./configure --without-ssl

this will install check_nrpe without ssl.

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Yes, but you don't need to have same version of ssl libraries for this. However, you would need same version of NRPE on both the server and the client which can surely be done.