I am not able to monitor Memory Usage of Nagios

[xerez]

Hi, I am trying to monitor the Memory Usage of Nagios's server with NRPE. However, I am not able to do it.

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[nagios@hostname libexec]$ ./check_nrpe -H localhost
connect to address ::1 port 5666: Connection refused
connect to address 127.0.0.1 port 5666: Connection refused
connect to host localhost port 5666: Connection refused[nagios@hostname libexec]$

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[nagios@hostname libexec]$ netstat -at | grep nrpe
[nagios@hostname libexec]$

I am using xinetd.

Edit:
Now, I have added the IP of Nagios in /etc/xinetd.d/nrpe, and the error has changed.

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[nagios@hostname libexec]$ ./check_nrpe -H localhost 
CHECK_NRPE: Error - Could not complete SSL handshake.

[tmcdonald]

Check section 3:

https://assets.nagios.com/downloads/nag ... utions.pdf

The guide should be mostly applicable to both XI and Core. Likely you did not compile SSL support into the agent.

[xerez]

I followed that document and nothing...

[hsmith]

Can you post the contents of /etc/xinetd.d/nrpe please?

[xerez]

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[nagios@hostname objects]$ cat /etc/xinetd.d/nrpe
# default: on
# description: NRPE (Nagios Remote Plugin Executor)
service nrpe
{
        flags           = REUSE
        socket_type     = stream
        port            = 5666
        wait            = no
        user            = nagios
        group           = nagios
        server          = /usr/local/nagios/bin/nrpe
        server_args     = -c /usr/local/nagios/etc/nrpe.cfg --inetd
        log_on_failure  += USERID
        disable         = no
        only_from       = 127.0.0.1 [IP Nagios]
}

Finally I got that NRPE works with the Nagios's IP or 127.0.0.1, but not with localhost:

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[nagios@ccnagios libexec]$ ./check_nrpe -H localhost
CHECK_NRPE: Error - Could not complete SSL handshake.
[nagios@hostname libexec]$ ./check_nrpe -H 127.0.0.1
NRPE v2.15
[nagios@hostname libexec]$ ./check_nrpe -H [ip]
NRPE v2.15

Now, to check the Physical Memory to Nagios. What plugin or command command I can use? Thanks.

[hsmith]

What are you trying to monitor the memory of? We have a lot of different plugins for monitoring a wide variety of devices.

[xerez]

I would like monitoring the Physical Memory (RAM) in the Nagios server.

[hsmith]

I would recommend you use the check_mem.pl plugin on your server, and just write a service check to have it check itself.

[xerez]

Thanks!!

[lgroschen]

xerez,

would you consider this topic resolved? If so I will lock it, but only if you have no further questions.