[asterisk-users] Load balance Asterisk servers?

[David Thomas]

On 11/14/06, Aaron Daniel <amdtech at shsu.edu> wrote:
> Incorrect :) IAX2 most definitely does support regcontext.
>
> Also, I think what he means is the phone specific information must be
> exactly the same from system to system or the failover won't be as
> seamless as you expect.  A lot of phones support some sort of SRV
> records, so in the event of a failure, the phones will automatically
> find the next available server.  The other option there is to set up an
> HA environment so the failover is even transparent to the phones, they
> just start talking to the new IP address immediately.
>
> Another thought, in any failover situation, if you have any sort of
> automated failover, you must make sure phones that need specific
> features fail to the same server (i.e. hinting and such) as those
> features don't work cross server.
>
> Aaron
>
> On Tue, 2006-11-14 at 08:16 -0700, David Thomas wrote:
> > On 11/14/06, Stelios Koroneos <skoroneos at digital-opsis.com> wrote:
> > > JR Richardson gave a very nice presentation at Astricon on how to do that with DUNDI
> >
> > As I understand it JR Richardson's DUNDi solution does not support
> > IAX. It uses regcontex which I believe is only available with SIP.
> > (please correct me if I'm wrong)
> >
> > Also JR notes that...
> >
> > "Associated SIP Users, business customers, require same registration
> > and failover to the same servers" so unless this is for a residential
> > setup, it may not be of much use to you. Nevertheless it is great
> > documentation, and may get you further than you are now.
> >
> > regards,
> > David
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> --
> Aaron Daniel
> Senior Voice Analyst
> Sam Houston State University
> amdtech at shsu.edu
> (936) 294-4198
>
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There I go spreading mis-information again. :)
Thanks Aaron for clearing up the IAX2 regcontext question. That is good to know.

In the DUNDi scenario, are there any other features that would be
affected or become unavailable in the event of a failure?

It seems like normal call processing would continue once the client
re-registered to a different box, but I haven't tried it yet.

I assume one could use DNS-Round-Robin to load balance registrations
between the boxes in the cluster, then pull the failed box out of DNS
to prevent registration attempts while the box is dead. Is there a
better way to do this ???

David