[Xymon] need help with 2 IPs for same host name

[Jon Peatfield]

On Fri, 25 Feb 2011, Ward, Martin wrote:

> Hi Cathy,
>
> You can, it just depends on how you want to use them, I have done this
> quite successfully in my configuration.
>
> One of the IPs will be the primary, this is the IP address that the
> client will use to talk to the Xymon server and in your bb-hosts file
> this must be given the same name as the hostname of the server. I use
> this IP address for all checks that are performed locally on the client
> and then sent back to the server by the Xymon client software.
>
> The secondary IP address can be given any other name. This IP is used
> for remote testing, in my example we have an external mail server
> listening on this address as well as a DNS server, so a check of port 25
> and a DNS query are done to ensure that these services are up and
> running.
>
> This is one way of doing it, I am sure there are others.
>
> |\/|

Just to add - in case it isn't obvious to everyone...

If for some reason you need the web pages to show the hosts name for both 
you can fake it with the NAME: entry, e.g. for a number of boxes here 
which each have an extra address for a round-robin ssh service we do:

...
0.0.0.0 hostname	# ssh
w.x.y.z ssh-hostname	# ssh COMMENT:"as rr-ssh" NAME:hostname
...

with the obvious replacements for w.x.y.z and hostname.

The name after the IP address must be unique in the bb-hosts config and if 
that isn't a real (DNS) hostname then you can't specify 0.0.0.0 for the 
address (I know that isn't recommended but I like to be lazy).

-- 
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| Jon Peatfield, _Computer_ Officer, DAMTP,  University of Cambridge |
| Mail:  jp107 at damtp.cam.ac.uk     Web:  http://www.damtp.cam.ac.uk/ |
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