Hi Carsten and Olle,

I need some clarification regarding to the servers DB on the cluster please.Do i need to configure MySQL DB replication and use that module http://kamailio.org/docs/modules/4.1.x/modules/db_cluster.html to make the servers use both of the DBs for read and write operations as a prerequisites to the db_mode = 1 to synchronize the active dialogs ?!

Best Regards and Thanks in Advance.

On Sun, Dec 28, 2014 at 10:50 AM, Olle E. Johansson <oej@edvina.net> wrote:

On 28 Dec 2014, at 09:25, Mahmoud Ramadan Ali <cisco.and.more.blog@gmail.com> wrote:

In addition, you can work with virtual IPs with Heartbeat/Pacemaker.

Carsten is completely right, the primary alternative is using DNS SRV records for load balancing
and failover.

The only issue is if you have NAT clients that lock to a single IP. In that case, you may want to
look into IP failover.

For more information about DNS SRV and NAPTR you can take a look at my presentation
about SIP and DNS on Slideshare:
http://www.slideshare.net/oej/sip-and-dns

/O

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