[asterisk-users] Asterisk Redundancy

[Adrian Marsh]

Sure,

Heres a basic overview:

- All IP (no local E1/T1 connections).
- 2Mb Fiber internet pipe backed up by a DSL backup.
- Single Asterisk server (with a backup clone on standby). Config
currently backed up to SVN and copied off by tarball by webmin to a
separate network.
- Both IAX and SIP connectivity to 2 providers, with A*k Dial command
driven failover for outbound calls (PSTN inbound limited to one
provider).
- All UPS backed.

That's about the current config.  This is an office/company config, not
a reseller.

Main points of failure:  Fiber/DSL Box (easy to swap out). Same for the
Fiber/DSL lines themselves.  The main A*k box itself.

I've covered all the redundancy I can (within budget) of the
connectivity, and I'm wondering what I can do with A*k itself.

I'm guessing that SIP proxies might be overkill (as I'd then need
redundancy within those too), so maybe it's a case of looking at
Linux-HA.

Adrian Marsh
 
-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Jared
Smith
Sent: 25 September 2007 15:28
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: Re: [asterisk-users] Asterisk Redundancy

On Tue, 2007-09-25 at 15:59 +0200, Per Jessen wrote:
> I haven't looked into it in any detail, but how about the standard
Linux
> HA solution with a heartbeat monitor, a shared file-system and IP
> take-over? 

It's been my experience that this usually works fairly well for
stateless protocols like HTTP, but doesn't do so well on stateful
protocols like SIP and IAX, and in general is a much more difficult
problem to solve.

Most people tend to use some combination of SIP proxies (such as SER and
OpenSER), DUNDi, shared storage, redundant databases with replication,
T1/E1 failover boxes, and horizontal scaling to make Asterisk more
highly-available.  Of course, I haven't really gone into much detail
here, but hopefully it helps answer your question.  (It's also my
personal experience that people who know how to build such solutions are
making enough money off of selling their solution that they aren't real
eager to give away all their secrets.)

In reality though, you say the word "cluster" and it means five
different things to five different people.  To really be able to answer
the original poster's question, we'd really have to know a lot more
about his architecture and his potential points of failure.

-- 
Jared Smith
Community Relations Manager
Digium, Inc.


_______________________________________________

Sign up now for AstriCon 2007!  September 25-28th.
http://www.astricon.net/ 

--Bandwidth and Colocation Provided by http://www.api-digital.com--

asterisk-users mailing list
To UNSUBSCRIBE or update options visit:
   http://lists.digium.com/mailman/listinfo/asterisk-users