Force check_nrpe to use a particular interface

[Andreas Ericsson]

Borgström Georg wrote:
> Hi,
> Our Nagios server has multiple interfaces. Is it possible to force check_nrpe
> to use a particular interface when contacting the nrpe daemon on clients?


No. The interface is selected based on the routing tables you've set up 
in the linux kernel. If your traffic is sent on wrong interface you've 
done something wrong when configuring the various routes and/or 
networks+netmasks.

man 8 ip
man 8 route

It *is* ofcourse possible to force outgoing traffic to go via a 
particular interface (portably, traffic can be sent from a particular 
address assigned to one of the network interfaces - man 2 bind for 
details). This is usually considered terribly bad practice, since the 
same effect can be achieved through proper routing on the box initiating 
the connection.

-- 
Andreas Ericsson                   andreas.ericsson at op5.se
OP5 AB                             www.op5.se
Lead Developer


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