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Listening on Multiple IPs

list Darrik Mazey
Thu, 03 Nov 2011 18:44:10 -0400
Message-Id: <user-764dda50b245@xymon.invalid>

On 11/03/2011 03:57 PM, Xymon User in Richmond wrote:
DNS will return all 3 IPs on a query, and it's left to the client side
which to use.  Most often the first one is used.  "Round robin" DNS
servers will alternate the order of the 3, but that still leaves a lot of
room for locking in on a single address by multiple clients.  You could
set up different names for the IPs and bind groups of Xymon clients to
each to spread out the load, I think.
This will also depend on whether the xymon client resolves the ip once
at startup or on each data send.  If it's once at startup, then whatever
ip it is given (even from a round-robin dns server) will persist until
it is restarted.  I'll leave it to those who have examined this behavior
and xymon client internals to say which is the case.

Darrik

-- 
Darrik Mazey
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