Configuring NRPE client CentOS7

[tgriep]

Edit the /usr/local/nagios/etc/nrpe/common.cfg file on the Centos7 server

Add a command like this

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command[elastic]=/usr/local/nagios/libexec/check_services -p elasticsearch

Save the change and restart xinetd

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service xinetd restart

Then run this command from the Nagios server

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/usr/local/nagios/libexec/check_nrpe -H xxx.xxx.xxx.xxx -c elastic

If it fails, check the bottom of the /var/log/messages file on the logserver for any errors and post them here.

[rferebee]

Ok. That worked.

[tgriep]

Great, getting progress.
What about this?

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 /usr/local/nagios/libexec/check_nrpe -H xxx.xxx.xxx.xxx -c check_services -a elastic

[rferebee]

Yes, that worked too.

[lmiltchev]

Is your issue resolved now or you have further questions?

[rferebee]

No, it's not resolved.

I shouldn't need to explicitly define every service I want to run a check against. We need to figure out why these checks are working properly on my original Log Servers, but not the new node I introduced.

[scottwilkerson]

No, it's not resolved.

I shouldn't need to explicitly define every service I want to run a check against. We need to figure out why these checks are working properly on my original Log Servers, but not the new node I introduced.

Please attach the /usr/local/nagios/etc/nrpe.cfg and /usr/local/nagios/etc/nrpe/common.cfg from your Log Server

[rferebee]

Please see attached. I uploaded both the working and not working versions of the files your requested.

Thank you.

[scottwilkerson]

the check_services commands are identical on these.

What is the error you are getting?

How are you running the command (can you give an example running the command from the CLI)

[rferebee]

There error is: CHECK_NRPE: No output returned from daemon.

Here's the output from the CLI.

Bad server:

[rferebee@nagiosxi ~]$ sudo su -
root@nagiosxi> /usr/local/nagios/libexec/check_nrpe -2 -H 10.128.207.115 -t 30 -c check_services 'elasticsearch'
CHECK_NRPE: No output returned from daemon.

Good server:

root@nagiosxi> /usr/local/nagios/libexec/check_nrpe -2 -H 10.128.207.111 -c check_services -t 30 -a 'elasticsearch'
elasticsearch: 1