こんなメールから始まった 昨日、突然のメールがAmazonから送られてきました。 タイトル「Notice: Degraded Amazon EC2 Instance」 Hello, We have noticed that one or more of your instances are running on a host degraded due to hardware failure. i-XXXXXXXX The host needs to undergo maintenance and will be taken down at 12:00 GMT on 2011-08-26. Your instances will be terminated at this point. The risk of your instances failing is increased at th