Deploying Freeradius in a HA environment

Phil Mayers p.mayers at
Sun Jun 15 19:57:09 CEST 2008

On Sat, Jun 14, 2008 at 10:12:20AM -0400, Richard Siddall wrote:
>Pete Kay wrote:
>>I am working on deploying 2 load balancing freeradius in a HA environment.
>>Could someone suggest the best way to do it?  I am comfortable with using
>>ldirector as the load balancer, but I am not sure how to do the
>>"check-alive" for freeradius within ldirector.
>>Any suggestion will be greatly appreciated.
>My recollection is that when this has been discussed in the past the 
>consensus was that there's no advantage to running FreeRADIUS in an HA 
>environment since RADIUS already supports redundant servers.

I would have to dispute that. We've seen NASes across the range (Cisco, 
3Com, Extreme) fail to move to the backup/secondary radius server 
they've got configured.

Sad, but true.

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