Re: [Vserver] ability to use 130+ ips within a vserver yet?

From: Chuck <>
Date: Thu 06 Apr 2006 - 15:00:52 BST
Message-Id: <>

On Thursday 06 April 2006 09:09 am, Benoît des Ligneris wrote:
> Hello,
> Chuck a écrit :
> > tuesday, i ran into a major emergency with a hardware failure on our email
> > machine which uses 130 ip addresses. my only choice was to move it to the
> > host side of our dell vserver host. this is presently causing an extreme
> > amount of port clashes as the email server wants to grab every ip on port
> > for webmail rather than stick to a single /24 and i so far have not found
> > way to bind it to only a single network.
> If you are using a vserver kernel, why not use chbind to bind the server
> to the IP you want to use ?

interesting utility... never knew it existed... i would have to bind to eth2
and all 130+ ip addys on it though and exclude one... one ip in that same
netblock using the same interface is a vserver guest that is a different
email server. from what i gather this will lock down all ip addys on that
interface... unless it is used first, then an ip is added by a guest using a
later startup... with my luck it would go ahead and grab that one too :)

> > putting it into a guest would cure all of this i believe... i did not do
> > initially due to the 16 ip limitations...
> Well, this can easily be changed with a patch to the vserver patch
> however there will be a small performance impact.

will have to find this patch and review it... if patched is this performance
impact across the board on all guests whether using 1 or 100 ips? or is it
restricted to those with >16 ips?

> > is that limitation released yet? or is there code available which works
> > enough to stuff it into a production environment? i have had to shut down
> > vservers just to get mail to run :(
> We already deploy it in a production environment for at least one year
> now (for hosting, 64 IPs).
> > the only other option i have is to buy a replacement server and put mail
> > that which i prefer not to do as we are targeting a large new server to
> > all the vservers onto which would leave the dell to run email as a stand
> > alone machine but this wont happen for a good month yet as once the server
> > comes in i have to recompile every virtual to live on amd64/opteron arch
as i
> > move them over (quite time consuming considering i am moving 40+ vservers
> > a p3 intel environment)..
> >
> >
> >
> --
> Benoit des Ligneris Ph. D.
> President de Revolution Linux
> EduLinux
> Toutes les opinions et les prises de position exprimées dans ce courriel
> sont celles de son auteur et ne répresentent pas nécessairement celles
> de Révolution Linux
> Any views and opinions expressed in this email are solely those of the
> author and do not necessarily represent those of Revolution Linux
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The Book of John, chapter 1, page 1, and end of book
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