RH 7.1 and nrpe

[Scott Zawalski]

Pascal Robert wrote:

> Hi,
>
> I get some problems with nrpe when the server try to contact RH 7.1 
> machines.
>
> Server setup:
>
> - RH Linux 8
> - Nagios 1.1
> - Nagios Plugins 1.3.1
>
> Client setup:
>
> - RH Linux 7.1
> - NRPE 1.9
> - Nagios Plugins 1.3.1
>
> Nagios is working fine with anything higher than RH 7.1, it's only the 
> 7.1 machines that's giving me headaches.
> On one client, I can contact it from the server but the connection is 
> close immediately:
>
> $ libexec/check_nrpe -H xxx.xxxx.xxx -c check_disk
> CHECK_NRPE: Error receiving data from host.
>
> $ telnet xxx.xxxx.xxx 5666
> Trying 192.168.1.10...
> Connected to devgen.cesart.local.
> Escape character is '^]'.
> Connection closed by foreign host.
>
> In the clien't log (/var/log/messages), the only reason I get is this:
>
> Aug 21 10:30:43 devgen nrpe[11501]: Could not read request from 
> client, bailing out...
>
> If I connect to localhost:5666 on the client, I get an answer.
>
> And on the two other 7.1 machines, if I start nrpe with xinetd, I 
> can't connect to port 5666, even from localhost.  The only way to get 
> to this port is by running nrpe as a daemon instead of by xinetd.  But 
> in this case, I get the same problem as the first machine.
>
> I don't have any firewall rules in place, and all other clients 
> (either RH 7.2, 7.3 or 8.0) are working fine.  I did recompile nrpe 
> and the plugins on each client so it's not a binary problem either.
>
>
>
>
>
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>
What do you have under allowed hosts?

look in the nrpe.cfg and check and see if the host you are trying to 
contact your nagios client with is on this line.


Mine looks like:
allowed_hosts=1.2.3.1

Good luck,
Scott






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