[Asterisk-Users] Re: load balancing 20 asterisk servers

[Rich Adamson]

The DNS approach does not handle single or multiple system failures,
only very elementary load balancing over a lengthy period of time.

------------------------

> You may want to consider a simpler aproach, why don't you balance the load via DNS?
> If you put in a zone file various A records for the same machine, but with different
> IP's, BIND will catch the trick and send a different IP (from the pool yo defined) each
> time a DNS request arrives. That's a simple way of doing that, it will definively work
> for termination, but you may have to think more who to cope with origiation (outgoing
> calls), since different clients will be connected to different servers.
> 
> 
> --- asterisk-users-request at lists.digium.com wrote:

> 
> We use it on our web and mail server to load ballance across multiple 
> hosts. The way we have it configured
> it will maintain a session for 15 minutes between a client and a 
> specific server. So long as you have
> qualify=yes in your configuration files, each client will continue to 
> talk to the one server until they are turned off/
> deactivated for at least 15 minutes (or whatever time period you 
> configure into it). I've not tested LVS with
> Asterisk, but it may be the right direction for you to take.
> 
> Cheers,
> -Shaun
> 
> Matthew Boehm wrote:
> 
> >I've read several other emails and pages on the wiki but none give any
> >deffinate answers. if you have 20 asterisk servers each with 4 pri's, all
> >running RealTime Extensions and RealTime SIPBuddies from the same MySQL
> >server, what prevents you from putting all 20 servers behind a single load
> >balancer? That way all of your UA's can use the same IP to register to; vs
> >maintaining which customer is assigned to which machine.
> >
> >perhaps its just that i am not that familiar with load balancers. i was
> >under the impression that a load balancer could/would send each recieved
> >packet to a different server.
> >this doesn't matter in the case of register requests since all asterisk
> >boxes share same SIP registry database.
> >
> >but what about invite requests and the rtp stream? you would have a majorly
> >broken conversation if each packet in the rtp stream went to a different
> >asterisk box.
> >
> >or are load balancers SIP aware? or is there some sort of session control
> >that the balancer is aware of and will send all packets in a "sip session"
> >to the same asterisk box?
> >
> >and then what about meet me conferences? if 10 UA's all dial a conference
> >DID number and all 10 get balanced to 10 different servers then they are all
> >sitting in seperate rooms right?
> >
> >hints, opinions, facts...all welcome and appreciated.
> >
> >-Matthew
> >
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> >  
> >
> 
> 
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