NRPE Install Error

[jmurray at whoi.edu]

Quoting Scott Ackerman <lists at scott-ackerman.com>:

> Shankar,
>
> thanks for the help. The nrpe daemon is running on the remote server. There
> were no ./configure problems on the remote server, and the only "warning" I
> received when I ran ./configure on the monitoring host was "checking for
> Kerberos include files... could not find include files"
>
> When I ran telnet from the monitoring host to the server I got the
> following:
>
> trying <ip address>
> connected to <ip address>
> escape character is '^}'.
> connection closed by foreign host.
>
> So it seems as if the ports are opened between the two. Firewall access is
> allowed between the two (obviously or telnet would not have worked).
>
> But I am still stuck in the same spot witht the "CHECK NRPE: Error - Could
> not complete SSL handshake."
>
>   _____
>
> From: asam30 at gmail.com [mailto:asam30 at gmail.com]
> Sent: Friday, June 20, 2008 1:25 AM
> To: Scott Ackerman
> Subject: Re: [Nagios-users] NRPE Install Error
>
>
> Please make sure ./configure went properly and complied nrpe without any
> errors. Also check if the nrpe daemon running, ps -ef | grep nrpe or ps -ef
> | grep 5666
>
> from the nagios server, try
> telnet <ip-of-the-monitoring-host> 5666
>
> you can also check if the firewall access allow between the two
> servers(nagios and remote host).
>
> Hope this helps
>
> -Shankar
>
>
> On 6/20/08, Scott Ackerman <lists at scott-ackerman.com> wrote:
>
>
> I have successfully installed NRPE on the remote server (FC6 box). I have
> run the check_nrpe "tests" to verify that everything is working correctly.
> On the monitoring server however (CentOS 5.1 box) when I run
> "/usr/local/nagios/libexec/check_nrpe -H (IP address of remote server), I
> get the following error:
>
> CHECK_NRPE: Error - Could not complete SSL handshake.
>
> the only "negative" reponse that I got when I ran ./configure was "checking
> for Kerberos include files... could not find include files. Sorry but I am
> new at this, but I am stumped at this point. The only thing that the
> documentation says is what to check if you get a "timeout error".
>
> Nagios v 3.02
>
> Scott Ackerman
> 1212 Baker Street
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>
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>
>
>
> --
> Shankar Asam
>

Scott,
In case you haven't already checked...make sure that in the /etc/services line
you have port 5666 specified correctly. If you are running nrpe from xinetd
make sure that the only_from = is set correctly.

Check the logs for obvious errors and if that still yields nothing valuable,
then you may want to look at tcpdump and or strace to see what's going on at a
lower level.

-Jonathan Murray
Linux Administrator
W.H.O.I


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