Nagios Support Forum

Posted: **Tue Mar 12, 2019 8:42 am**

Team,

I have a couple of instance of Nagios XI running and am monitoring each instance of Nagios XI in the opposite instances.

After the recent upgrade to 5.5.10 getting the below error for all instance of Nagios XI. Getting this error only for Nagios XI instance host where as i am able to monitor other linux OS without any issues.

CHECK_NRPE: Error - Could not connect to xx.x.xx.xx: Connection reset by peer

Attaching the error screenshot i get this error only for few services all instance of Nagios XI are running on Red hat enterprise version 7.5

Posted: **Tue Mar 12, 2019 9:40 am**

Is NRPE running under xinetd or as a "standalone daemon" on the remote box? Can you run the following commands on the client machine and show the output?

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service xinetd status
service nrpe status
ps axuw | grep nrpe
netstat -at | grep nrpe

If NRPE is running as a standalone daemon, you would need to add the Nagios XI server's IP address to the "allowed_hosts" line in the nrpe.cfg file:

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allowed_hosts=127.0.0.1,<Nagios XI server ip>

make sure you have the following line:

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dont_blame_nrpe=1

save, exit, and restart NRPE, so that changes can take effect.

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service nrpe restart

Posted: **Wed Mar 13, 2019 9:43 am**

Hi,

NRPE running under xinetd and host was allowed /etc/xinetd.d/nrpe.cfg

I will PM the output for the commands to you.

Posted: **Wed Mar 13, 2019 12:06 pm**

I replied via a PM.

Nagios Support Forum

CHECK_NRPE: Error - Could not connect to xx.x.xx.xx: Connect

CHECK_NRPE: Error - Could not connect to xx.x.xx.xx: Connect

Re: CHECK_NRPE: Error - Could not connect to xx.x.xx.xx: Con

Re: CHECK_NRPE: Error - Could not connect to xx.x.xx.xx: Con

Re: CHECK_NRPE: Error - Could not connect to xx.x.xx.xx: Con