On Mon, 2 Jul 2012, James Downs wrote:

back-plane / control-plane was unable to cope with the requests.  Netflix uses 
Amazon's ELB to balance the traffic and no back-plane meant they were unable to 
reconfigure it to route around the problem.

Someone needs to define back-plane/control-plane in this case. (and what wasn't working)

Amazon resources are controlled (from a consumer viewpoint) by API - that API is also used by amazon's internal toolkits that support ELB (and RDS..). Those (http accessed) API interfaces were unavailable for a good portion of the outages.

I know nothing of the netflix side of it - but that's what -we- saw. (and that caused all us-east RDS instances in every AZ to appear offline..)



--
david raistrick        http://www.netmeister.org/news/learn2quote.html
dr...@icantclick.org

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