[SR-Users] Kamailio multihoming

[Alex Balashov]

On 04/10/2011 08:59 PM, roman at dmytriv.com wrote:

> Alex, thank you for you hints.
> Load distribution is more of priority to me. I think low TTL might be a
> solution. But what can be done to keep Kamailio in sync on geographically
> dispersed servers?

Are you talking about database data, or configurations?

The answers vary depending on whether there are two geographically 
dispersed servers, or more.  But short answer:

1) Circular (master-master) database replication;

2) Disk-level replication over network (i.e. DRBD) -- less suitable for 
the public Internet, but may be workable depending on overall 
reachability and site-to-site bandwidth quality, in combination with 
something like GFS.

3) Manual synchronisation of config files and such with rsync, etc.

In general, I would say #1 is simplest.  But there aren't many 
relational databases out there whose replication schemes easily support 
more than two masters right now.

-- 
Alex Balashov - Principal
Evariste Systems LLC
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Suite 2200
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