Asteris on EC2.. partially solved

[Philippe Creytens]

Gents

Just to provide feedback to the people that emailed me.
Found a solution that appears to be running just fine 12,000km away on Amazon.

I had to resort to assigning an Elastic IP to the instance.

Upside: it works like a charm (but needs some more testing)
Downside: an Elastic IP costs $0.01 when not running; or more or less $7/month (if you 'reserve' it).

So I guess if you want to set up a potential pool of Asterisk servers, you will have to pay for your 'reserved' IPs, even if they are not used.
But of course,  having to pay $7/ip/month still beats having extra servers only for peak moments...

So, next challenges:

1) dynamically start/shutdown instances
2) how do we setup Adhearsion to address a pool of servers?

Suggestions, ideas or comments are welcome!

Philippe

[ANANGWE Nelson]

Dear Philippe,

 

The link below could help with the dynamic starting and shutting down of instances haven't used it though.

 

http://code.google.com/p/scalr/

http://aws.typepad.com/aws/2008/04/scalr-.html.

 

Regards,

Nelson

---

From: adhea...@googlegroups.com [mailto:adhea...@googlegroups.com] On Behalf Of Philippe Creytens
Sent: Tuesday, April 15, 2008 10:43 PM
To: Adhearsion
Subject: Asteris on EC2.. partially solved

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[Philippe Creytens]

Nelson

I already had a look at Scalr. However, no documentation (yet?) and PHP based.
I am also looking into Kato (Ruby based, uses EC2 SQS).

As there are number of tools out there, I feel pretty confident that dynamically managing a pool of Asterisk servers can be done.
Unsure however to how to deal with Adhearsion, especially towards outbound calling via Drb... Jay, suggestions??

Philippe

[Tim Uckun]

> So, next challenges:
>
> 1) dynamically start/shutdown instances
> 2) how do we setup Adhearsion to address a pool of servers?
>
> Suggestions, ideas or comments are welcome!

It would be trivial to set up adhearsion to address a pool of server.
All you need is a load balancer. Since asterisk connects to adhearsion
over IP the load balancer can shuttle the AGI calls between the
backend servers.

Your remaining problems are...

1) How to make sure multiple servers have the same codebase.
2) How to make sure all asterisk servers have the same sounds on them.

1) is easy just use vlad or capistrano.
2) is easy just use powerfolder (http://www.powerfolder.com/)

I suppose you could use powerfolder for 1) too.

[Philippe Creytens]

Tim

Loadbalancing on the incoming side is no issue: I could use DNS round-robin, but I need to be able to address multiple Asterisk servers on outbound traffic via Adhearsion.
AHN uses Drb and AMI and it specifically connects to the server configured in startup.rb.

Philippe

[Tim Uckun]

>
> Loadbalancing on the incoming side is no issue: I could use DNS round-robin,
> but I need to be able to address multiple Asterisk servers on outbound
> traffic via Adhearsion.
> AHN uses Drb and AMI and it specifically connects to the server configured
> in startup.rb.

I bet you could use rinda and ring for that.

http://segment7.net/projects/ruby/drb/rinda/ringserver.html
http://evan.tiggerpalace.com/?p=39

It's a tuple space. Your application can throw things into the tuple
space and your outbound call handlers can pull things from the space
one at a time and process them.