Hi,

Hi Stella, I ran in your problem just quite weeks ago and I solved this way: - Use mysql replication for syncing the two database (you have to make db1 slave of db2 and db2 slave of db1: every record inserted in one db will be automatically inserted in the other one) - Use heartbeat (or whatever you like most) to configure a virtual ip for the two db servers. (eg: db1 has 10.0.0.1 , db2 has 10.0.0.2, virtual ip is 10.0.0.3) - Configure sql module to point to the virtual ip (eg: 10.0.0.3) so the radius servers are unaware of the underlying mysql cluster. You can find lots of docs on google about every topi listed above.

Cheers, Stella

Hth, Francesco.