[Pdns-users] pdns, gslb/glb & cdn balancer?

[matthew zeier]

Instead of reinventing some wheel, hoping someone can point me to some resources.

I'd like to use pdns to duplicate GSLB/GLB functionality.  I'd rather have the system automatically calculate the closest datacenter to the end user (vs. a static mapping) based on the lat/long.  Is there something that already does this?

I'd also like to do some sort of weighted DNS to split load across several CDNs (multiple CNAME RRs)