I'm relatively certain this is a silly question, but is anyone willing to share their experience with asterisk in the amazon cloud? Does it work? Or do timing issues mess with audio? Bruce
On 07/14/2011 06:57 PM, Bruce Ferrell wrote:> Does it work? Or do timing issues mess with audio?It does, to a point. You will definitely see problems at higher concurrent call volumes, and there is no question that concurrent call limits reachable in such an environment are lower than on bare metal. You will also need to configure Asterisk to deal with the fact that EC2 instances have a private IP address homed on the network interface and a public IP DNAT'd to it 1-to-1. The 'externip' parameter in sip.conf can be used to do that. Actual experiences will vary greatly depending on the exact physical hardware node on which your VM is provisioned, just how viciously oversubscribed it is, and the I/O demand of other users. A lot of it is a matter of luck. For a small, infrequently used PBX, it will probably work fine. Nir Simionovich has a more optimistic take, having utilised EC2 instances for short-term outbound dialing campaigns based on Asterisk. Here is a link to his Amoocon 2009 presentation on the topic: http://www.simionovich.com/2009/05/14/asterisk-and-amazon-ec2-amoocon-presentation/ Perhaps it is a case where the economic benefit of "elastic" resources that can be ramped up to meet demand outweighs the opportunity costs of the aforementioned inconsistency. -- Alex Balashov - Principal Evariste Systems LLC 260 Peachtree Street NW Suite 2200 Atlanta, GA 30303 Tel: +1-678-954-0670 Fax: +1-404-961-1892 Web: http://www.evaristesys.com/
We run on virtuals but not amazon Sent from my iPhone On Jul 14, 2011, at 6:57 PM, Bruce Ferrell <bferrell at baywinds.org> wrote:> I'm relatively certain this is a silly question, but is anyone willing to share their experience with asterisk in the amazon cloud? > > Does it work? Or do timing issues mess with audio? > > Bruce > > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > New to Asterisk? Join us for a live introductory webinar every Thurs: > http://www.asterisk.org/hello > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users
I run many things on Rackspace, but not my Asterisk servers. Reliability in general (I don`t mean uptime, but the availability of CPU/Memory cycles for your own needs) is either flaky, or much more expensive than buying your own server would be. Cloud-based should only be kept for things where lack of performance is not an issue (I don`t mind getting my emails 2 minutes late, so it`s good for that). I wouldn`t put telephony on Rackspace. Not sure how Amazon is different. Mike> I'm relatively certain this is a silly question, but is anyone willing > to share their experience with asterisk in the amazon cloud? > > Does it work? Or do timing issues mess with audio? > > Bruce >
Hi Bruce, We're running Asterisk in a domU Xen VM. Works great, including conferences, but we can predict the availability of hardware resources. cheers, Jan On 15/07/11 10:57, Bruce Ferrell wrote:> I'm relatively certain this is a silly question, but is anyone willing > to share their experience with asterisk in the amazon cloud? > > Does it work? Or do timing issues mess with audio? > > Bruce > > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > New to Asterisk? Join us for a live introductory webinar every Thurs: > http://www.asterisk.org/hello > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users >