Amazon Web Services Dear AWS Customer, We are pleased to announce that it's now even easier to use Auto Scaling to manage your Amazon EC2 capacity and maintain availability of your applications. Starting today, you can use the AWS Management Console to create and update Auto Scaling groups and launch configurations. To get started, log in to the Amazon EC2 console and choose "Auto Scaling Groups" in the panel at the left, or click here. In the console, you can create an Auto Scaling group based on a template that you define for your instances. You specify the number of instances you want to run and Auto Scaling will launch the instances for you, keeping them balanced across Availability Zones and replacing unhealthy ones. You can also create scaling policies that adjust your group size dynamically in response to Amazon CloudWatch metrics, such as average CPU utilization. Even if your application only requires a single instance, using Auto Scaling can help you keep it available by replacing the instance if it fails status checks. For more information, see Get Started with Auto Scaling Using the Console in the Auto Scaling Developer Guide. Sincerely, The Amazon EC2 team 大意： 可预先调整等伺服器达负荷条件时自动扩充 自动动态扩充等…功能 刚试了一下，既有的映像档好像要复制出来重用 不知要不要收费 还有请高手提供更多资讯 --

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