Hi Greg, I have a similar setup with multiple asterisk boxes. I have used opensips as a load balancer (+some pre routing logic before load balancing).
It is based on this idea: http://www.opensips.org/Documentation/Tutorials-LoadBalancing-1-9 - Laszlo 2013/8/27 Gregory Malsack <[email protected]> > Hey All, > > Growing call center. Currently at about 200 call center staff, running > about 1000 calls per hour. Gearing up to double that. Not too sure that a > single server will support that growth. So, I'm trying to come up with ways > to scale the system and still maintain a simplistic design. So I'd like to > bounce some ideas around. > > Currently I am running on a Dell 1950, dual quad core 2.33ghz xeons, with > 16gb ram, and 2 tce400p cards. This server is managing the full load of the > company. We are recording all calls, running ivr, queues, cdr, cel, and web > for reporting. I currently have another 1950 of the exact same > specifications as a cold spare. > > Here's where you can see drawings of my current connectivity and an > optional connectivity I'm contemplating... > > http://www.paydaysupportcenter.com/current.pdf<http://www.linkedin.com/redirect?url=http%3A%2F%2Fwww%2Epaydaysupportcenter%2Ecom%2Fcurrent%2Epdf&urlhash=qLsB&_t=tracking_anet> > http://www.paydaysupportcenter.com/option.pdf<http://www.linkedin.com/redirect?url=http%3A%2F%2Fwww%2Epaydaysupportcenter%2Ecom%2Foption%2Epdf&urlhash=CJG1&_t=tracking_anet> > > As you can see I currently have a separate sql server and a separate > storage server for the call recordings. This is all working fine. > > However, I'm thinking for scalability I should be looking to migrate to a > configuration similar to the one in option.pdf. Where I have a VOIP gateway > server that simply relays traffic and possibly can do some load balancing > or intellegent routing. But nothing more then that, and possibly a second > one of these online as a hot failover. > > Then have separate sql, storage, (i forgot it in the pic) web, and > asterisk servers behind that on separate dedicated network. Here's my > dilemma though, how do I balance the load across multiple machines for > scalability... > > Since 95% of our calls come into queues, I need to be able to maintain > queue stats and presence across all of the servers. Thus far, I've got > everything except the extensions.conf file into the mysql database. I > thought about setting up 2 servers, 1 for sales, and 1 for customer > service, then possibly break out each call queue to it's own server as > things grow. Just not sure if that's the right way to go. > > Then regarding extensions.conf, I've read that it too can be placed in the > sql database and accessed via switch. however it's resource intense, so now > I'm thinking of maybe putting that file on the nfs server for all of the > boxes to read from. > > As for the design of that file, I was kind of thinking of a modular design > within the file using various goto's and gosubs. Our business model is > based on affiliates and corporate marketing, so we have a ton of did's that > follow the same call flow with minor modifications in some variables, as > well as variations in call flow, and hours of operation. Thus the modular > design of the call flow. Then the primary inbound context would simply be a > list of did's pointing to a goto with a list of the variations and > variables for the did. > > Ok, now that I've melted your brains.... thoughts? > > Thanks all in advance for the discussion... > Greg > > -- > Greg > > > -- > _____________________________________________________________________ > -- 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 > -- -- Kind regards, Laszlo Bekesi http://voipfreak.net
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