http://www.opensips.org/index.php?n=Resources.DocsTutLoadbalancing
On Sep 25, 2010, at 6:22 AM, Stefano Sasso wrote: > Hello folks, > my company has experience in setting up single asterisk setup, but > recently one of our customers asked us to set up an asterisk cluster, > that must be High Availability and Load Balanced. > So I wrote here to have some hint or advice about the configuration we > thought. > > First of all I'll explain you the scenario: > The asterisk cluster must serve as Call Center "Hub-and-Spoke". There > are lots of little call-centers (~15 ops), phisically separated, that > must appears as a single "Big Virtual Call-Center". The call-center is > inbound and outbound. > Initially the "Virtual Call-Center" will be composed of 15 small > call-centers (= ~230 ops), but the prevision is to grow to ~800 ops. > > Asterisk must work as B2BUA, because the customer does not want the > call-centers contact directly the upstream SIP providers. Asterisk > server must also record the call and, maybe, do some transcoding. > > The single asterisks instances talk each-other with DUNDi/IAX2 to pass > the calls from an op to another op registered on another server. > We'll use a mysql database (NDB cluster) to avoid to have multiple > sip.conf files with the registration informations (asterisk-rt). > We must, in any case, use asterisk, because the whole call-center has > to be integrated with a 3rd part software for predictive calling ad > power dialing which has been developed for asterisk. > > The SIP servers are behind NAT, because the customer want to use only > one public IP address; every asterisk server will have a different RTP > port range to avoid rtp conflicts. > > And, for now, the LB part works manually registering the ops on > different asterisk servers. > But now we have to achieve the HA part of the setup. > > We started considering a SIP hardware load balancer, like Radware or > Brocade, but neither a single nor a couple of this equipments (HA, > remember?) do not fit in the customer budget. > So, we started thinking about use OpenSIPS (formerly OpenSER) as a SIP > load-balancer. (the customer has server hardware that could be used > for this, and we will use VRRP for redundancy). > > In the OpenSIPS features we read "load balancing with failover", but > we could not find any useful and complete configuration example. > Is OpenSIPS able to know if an asterisk server is UP or DOWN, or must > we use a 3rd part tool, like mon? > > Anyone has experience in use OpenSIPS as SIP load balancer (not to > work as "real" SIP proxy)? > > Any hint/advice for this part, or for the global setup? > > > Thanks in advance for the help! > Stefano > > PS: sorry for my weak english > PS2: sorry for cross posting but, if the general setup is more > asterisk related, the OpenSIPS part is, obviously, OpenSIP specific. > > -- > Stefano Sasso > http://stefano.dscnet.org/ > > _______________________________________________ > Users mailing list > [email protected] > http://lists.opensips.org/cgi-bin/mailman/listinfo/users _______________________________________________ Users mailing list [email protected] http://lists.opensips.org/cgi-bin/mailman/listinfo/users
