On Mon, 2 Jul 2012, david raistrick wrote:
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.
It seems like if you're going to outsource your mission critical
infrastructure to "cloud" you should probably pick at least 2 unrelated
cloud providers and if at all possible, not outsource the systems that
balance/direct traffic...and if you're really serious about it, have at
least two of these setup at different facilities such that if the primary
goes offline, the secondary takes over. If a cloud provider fails, you
redirect to another.
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Jon Lewis, MCP :) | I route
Senior Network Engineer | therefore you are
Atlantic Net |
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