check_nrpe problem with dynamic ip

J. Bakshi joydeep at infoservices.in
Mon Sep 1 13:15:48 CEST 2008


Assaf Flatto wrote:
>> Hi Assaf,
>>
>> I am afraid to say, but i can't understand its utility.
>> how this script help the remote nrpe daemon a.k.a  "/etc/nagios/nrpe.cfg"
>> to know the IP of my local machine ? The "allowed_hosts" needs to know the
>> IP of my local machine so that I can use nrpe_check command from my
>> local machine.
>>
>> many thanks
>>
>>     
>
> nrpe is the listening utility on a server waiting requests from the nagios server .
> It has a "access limiter" as to make sure that only one server can query it , that is 
> the "allowed_hosts" directive .
>
> If your nagios ip is changed - and the local machine  ip hasn't , then you need to tell the local 
> machine the Nagios server has a  IP so it will accept the requests from the new ip .
>
> this is done by replacing the nagios server ip in the allowed_hosts directve (you have it as 
> 122.xxx.xxx.xxx) .
>   

Exactly,  I can communicate with the remote nrpe server by replacing the
allowed_hosts directive
at the  "/etc/nagios/nrpe.cfg" file. But as I mentioned before this
demands to change the allowed_hosts
as soon as my local machine's IP ( which is dynamic ) is being change.
I'm looking a solution to overcome this.
Practically the point of allowing limited IPs by allowed_hosts directive
is OK. But buy chance if there is any option to
over ride this, I can also monitor that remote server with out modifying
its "/etc/nagios/nrpe.cfg" after every 2/3 days.


> Assaf
>
>
>
>
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-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Joydeep Bakshi, Linux System Admin
Kolkatainfoservices Pvt Ltd,
23A Royd Street, Kolkata 700016, India
Work Phone 91 033 40014784
http://infoservices.in/
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