Hi Carel,
this is a rather complex question with no simple yes or no answer. You can use the dialog module with no "in-memory" storage of dialog data and leave it to the database to do the replication. I think postgres has Multi-Master Replication, i am not sure about MySQL. At a major german telco operator, we did something similar: We had two servers, both with different addresses and an Alias for the other server. In that case, we had two loadbalancers (logically one in a HA setup) in front, who would do the failover in case. Worked fine.
Carsten
2012/6/5 Reinhard, Carel (GD) Carel.Reinhard@srgssr.ch:
Dear all, hope to get some information from you guys!
For a redundant service we have to build up SIP proxy/registrar server in a high available scenario. Therefore, we will have 2 SIP proxy/registrar on two completely independent servers. They should be SIP dialog stateful and replicate all the session/call states between each other. If one server fails, the other should have all the SIP dialog information for call handling and accounting. How can this done in a stable and reliable way? Is this feature mature enough to support enterprise requirements?
The only information I have is to build it up with the DISPATCHER module, but it seems more to be a stateless load-balancer instead of a HA module.
Who has experience with HA failover designs with Kamailio and can give me some hints?
Thank you very much in advance
Kind regards
Carel
Carel Reinhard Security and VoIP Engineer
SRG SSR Switzerland
Telefon direkt +41 31 350 94 07
Carel.Reinhard@srgssr.ch
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