Thank you for answers. What is the safest way to have 2 servers for high availability with Radiator.
Thanks > -----Original Message----- > From: h...@open.com.au > Sent: Mon, 27 Aug 2012 15:17:59 +0300 > To: radiator@open.com.au > Subject: Re: [RADIATOR] Radiator high Availability > > On 08/26/2012 03:00 PM, sergio wrote: >> I use Radiator 4.10 and I need to place a second radiator and I use >> FreeBSD, but I need a solution to the sessions (SessionDatabase SQL) is >> well synchronized since I use mysql. A mysql replication via resolves or >> is there a better solution? > > Here are some thoughts: > > You should consider cases where the replication master becomes > unreachable. If radiusd switches to secondary DB server, what happens > when the primary comes back? I am assuming there are two DB servers, > master that replicates to secondary server. > > If there's a network connectivity problem with one radiusd and the DB > master server and radiusd decides to switch to the secondary DB. What > happens when there are writes to both DB server. > > If the writes can happen to both DB servers, how fast should the > replication be? Assuming you have two radius servers and there's a very > short lived session where the accounting start and stop messages go to > different RADIUS servers which talk to different DB servers, is the DB > synchronised when the session ends? Could session stop be recorded after > session start? > > If you try to make replication quicker, how soon will the database start > having load problems. > > Note: I'm not very familiar with MySQL synchronisation. There are likely > many other things to consider too. > >> I also thought about using FreeBSD with CARP. > > CARP seems to allow hosts to share the same IP address. RADIUS requires > certain amount of state to handle e.g., retries and knowing which reply > is related to which request. Sharing an address can lead to problems > when related RADIUS messages are sent to multiple different RADIUS > servers. > > Thanks, > Heikki > > -- > Heikki Vatiainen <h...@open.com.au> > > Radiator: the most portable, flexible and configurable RADIUS server > anywhere. SQL, proxy, DBM, files, LDAP, NIS+, password, NT, Emerald, > Platypus, Freeside, TACACS+, PAM, external, Active Directory, EAP, TLS, > TTLS, PEAP, TNC, WiMAX, RSA, Vasco, Yubikey, MOTP, HOTP, TOTP, > DIAMETER etc. Full source on Unix, Windows, MacOSX, Solaris, VMS, > NetWare etc. > _______________________________________________ > radiator mailing list > radiator@open.com.au > http://www.open.com.au/mailman/listinfo/radiator ____________________________________________________________ FREE 3D MARINE AQUARIUM SCREENSAVER - Watch dolphins, sharks & orcas on your desktop! Check it out at http://www.inbox.com/marineaquarium _______________________________________________ radiator mailing list radiator@open.com.au http://www.open.com.au/mailman/listinfo/radiator
