[OpenSIPS-Users] Dialog distribution

[Bogdan-Andrei Iancu]

Hello Mariana,

Currently there is no way you can share the dialog state between 2 
running instances of opensips. Probably this will be available in the 
next versions (1.9 maybe ?).

But my question is how comes you have such a scenario that requests of 
the same dialog end up on different servers ?? may you such consider 
fixing that part.

Regards,
Bogdan

On 03/09/2012 02:36 PM, Mariana Arduini wrote:
> Hello,
>
> I've been searching a lot on how to have more than one OpenSIPS 
> handling messages from the same dialog (for example, the initial 
> request goes to server #1 and the sequential requests go to server #2, 
> in case server #1 goes down). I've tried pointing the db_url to the 
> same database on both servers, setting db_mode parameter to 1 (flush 
> all dialog data into DB immediately), setting the db_update_period to 
> a smaller value than the default but didn't work, except for when we 
> stop server #1 smoothly. Even so, some header translations we should 
> do were not performed.
>
> I'm supposed to find out how a distributed key-value store like Redis 
> can be useful on that. I've seen the example in the Key-value 
> Interface Tutorial but I have no idea on how to transfer dialog 
> values, flags along with other dialog state information from the 
> database to a KVP store. Would it be something like having a whole new 
> dialog module that uses a distributed cache_db instead? Sounds hard to 
> accomplish...
>
> Is this 
> http://lists.opensips.org/pipermail/users/2012-February/020657.html supposed 
> to do what I need? Is there any example of use anywhere? What I got 
> from it is just profiling distribution, I don't get how could this 
> allow all dialog state to be shared...
>
> Thanks a lot for any pointer or help.
> Mariana.
>
>
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-- 
Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com

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