[Kamailio-Users] Dialog profile persistence - DB vs. memory.

[Alex Balashov]

Greetings,

Is some of the dialog profile information kept in in-memory structures 
inside the Kamailio instance even when one is using a database?

I am using the dialog module in an HA configuration and fail over the 
database and proxy between two machines.  The database and the proxy are 
both started on the secondary node during failover, and the database 
uses on-disk data and indices on a shared filesystem.

What I am finding is that if I initiate some dialogs on the primary and 
then trigger the failover, the proxy on the secondary node is not aware 
of them.  I see the entries for them in the database table from the 
secondary node - they're definitely there, and I am using db_mode 1 
(real-time).  However, the profile sizes are all showing as 0.  I have 
also tried it with different match_modes with the same results whether I 
am using the RR cookie or SIP attributes purely.

It's rather important that I get this working because I require dialog 
tracking for secure loose-routing of subsequent (non-initial) in-dialog 
requests and for concurrent call limit control.  I was imagining that 
storing all the dialog info in the database would create the necessary 
persistence layer for another proxy instance to have the exact same 
profile information as the first.

Is this a bug, or is it supposed to work this way?

Cheers,

-- Alex

-- 
Alex Balashov
Evariste Systems
Web    : http://www.evaristesys.com/
Tel    : (+1) (678) 954-0670
Direct : (+1) (678) 954-0671
Mobile : (+1) (706) 338-8599