[Sussex] Virtual IPing?

[paul.morriss at tokenbay.co.uk]

Thank you for the information Ronan, the solution we are working on is to
cluster a number of Linux machines as part of a multiplayer games system
solution..

Maybe a dedicated load balancer would be a better option?

Paul

> Hi Paul
>
> On Sat, 15 Apr 2006 10:36:59 +0100 (BST)
> paul.morriss at tokenbay.co.uk wrote:
>
>> Hi All
>>   I have been told that it's possible to several Linux boxes to have
>> the same IP address (e.g. 3 boxes with 192.168.1.100) which act as a
>> form of 'load balancing' - the person thought it was called Virtual IP
>> addressing??
>
> Don't think you can have more than one machine with the same IP -
> doesn't that kinda defeat the object of IP addressing?  You can
> certainly have several NICs sharing an IP address in one machine - in
> the linux world this is called ethernet bonding.  You can also do
> the opposite and have the same NIC bound to several IPs.  Virtual IP (I
> think) usually refers to having a virtual interface (such as a bonded
> interface) that acts on top of one or more physical interfaces.
>
> Load balancing is usually achieved either by having a dedicated load
> balancer in front of the servers (I think there's software out there
> to do this with a linux box), or by doing a round robin DNS approach
> where you set up several IPs with the same FQDN.  The round robin
> approach relies on the fact that a resolution request for the FQDN will
> result in one of the possible answers being returned at random which,
> over time, gives you load balanced services.
>
> Hope that helps a little??
>
> Cheers
> --
> Ronan
> e: ronan at thelittledot.com
> t: 01903 739 997
>
> This email has been digitally signed using GNUPG to verify the identity
> of the sender. Please see http://www.gnupg.org/ for further information.
> _______________________________________________
> Sussex mailing list
> Sussex at mailman.lug.org.uk
> E-mail Address: sussex at mailman.lug.org.uk
> Sussex LUG Website: http://www.sussex.lug.org.uk/
> https://mailman.lug.org.uk/mailman/listinfo/sussex