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HA: setup instructions

On Mon, 2006-01-23 at 10:46 -0500, Martin Steinmann wrote:

> >First draft of setup instructions checked in to sipXregistry/doc on
> the HA branch, as HaSetup.odt (OpenOffice) and HaSetup.pdf. Please
> review. In particular, >please comment on the sections that I have
> included below.
> >
> >-Walter
> 
> > 
> 
> Walter
> 
> Very interesting read. How about defining some specific use cases for
> which install instructions are provided?  Here is what I am thinking
> of:
> 
> 1. Redundant HA setup in the same data center with both servers on the
> same subnet. Major objective: Provide redundancy and failover for call
> control.

It actually doesn't matter one way or the other whether they are on the
same subnet.  They just need to have IP connectivity - you could sync
two servers on opposite sides of the planet if they can get https
connections between them.

In fact, I would expect the normal case to be servers in different
locations because it makes the failures less likely to be common.
Backhoes can be tough on a single site.

> 2. Two location setup. The two servers are on two different subnets
> connected over a VPN (i.e. two locations). Each server is primary
> responsible for its population of phones and gateways (i.e. the phones
> and gateways in that location). If the server in one location goes
> down, the server deployed in the other location would take over.
> 
> The second example is what we probably would like to do. The two
> locations should be independent both having their own PSTN T1 gateway.
> It should be possible to make and receive calls even if the IP
> connectivity to the other location is broken. Under normal operating
> conditions the two systems would look like one big system and phones
> could have DID numbers from both locations registered.
> 
> Would this make sense?
 
It would make sense, but it's beyond the scope of what we're trying to
achieve for this release.   Might be possible with some extra hand
configuration though.

-- 
Scott Lawrence  tel:+1-781-938-5306;ext=162 or sip:slawrence (at) pingtel.com
  Consulting Engineer - Pingtel Corp.  http://www.pingtel.com/
  sipXpbx project coordinator - SIPfoundry  http://www.sipfoundry.org/sipX



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