Monitor remote machine's memory using Nagios Core

[abrist]

/usr/local/nagios/libexec/check_nrpe -H localhost
connect to address 127.0.0.1 port 5666: Connection refused
If I specify a host other than local host then I am getting socket time out

Are you starting nrpe through xinetd or an init script?

[vinothsethuram]

I started the daemon. Do we need to install nagios in remote server which we are going to monitor. And also please give syntax/example.

[abrist]

Do we need to install nagios in remote server which we are going to monitor.

No, the nrpe daemon runs on the remote host. Your nagios server checks the remote host with check_nrpe.

And also please give syntax/example.

Of what?

[vinothsethuram]

Syntax/Example about disk usage and processor check

[abrist]

I would suggest you start with the following doc as examples without an understanding of the syntax will not get you very far:
http://nagios.sourceforge.net/docs/nrpe/NRPE.pdf

[vinothsethuram]

Given link is very useful. I'm able to get output for local host. however i couldn't get output for remote host. getting port 5666: Connection refused

[tmcdonald]

Given link is very useful. I'm able to get output for local host. however i couldn't get output for remote host. getting port 5666: Connection refused

Did you open port 5666 in the firewall?

[vinothsethuram]

Added nrpe 5666/tcp # NRPE in services file and executed this command

iptables -A INPUT -p tcp --dport 5666 -j ACCEPT

[tmcdonald]

You forgot the -m flag, might make a difference:

Code: Select all

iptables -A INPUT -p tcp -m tcp --dport 5666 -j ACCEPT

Then also make sure to run:

Code: Select all

service iptables save

so changes will persist after a reboot.

[vinothsethuram]

Still getting port 5666: Connection refused