AWS ELB是否自己处理HA? [英] Does AWS ELB handle HA by itself?

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也许是一个愚蠢的问题，但我已经搜索了一段时间...

为确保aws ELB HA，我是否应在控制台中显式创建两个ELB实例，否则aws本身将为我处理HA，所以我只需要创建一个?

谢谢

解决方案

是的，它可以为您管理自身的HA.主要产品页面提到了这一点-

ELB被设计为HA.您可以通过在ELB上执行dig命令并看到它返回多个地址来查看此情况.

默认情况下，ELB只会将流量发送到该ELB所在区域中的实例.如果您要进行跨区域故障转移，则需要在此处查看- https://aws.amazon.com/blogs/aws/amazon-route-53-elb-integration-dns-failover/

Maybe a stupid question, but I have searched for a while...

To ensure aws ELB HA, shall I explicitly create two ELB instances in console or aws itself will handle HA for me, so I just need to create one?

Thanks

解决方案

Yes, it manages HA of itself for you. The main product page mentions this -

ELB is engineered to be HA. You can see this by performing a dig command on your ELB and seeing that it returns multiple addresses.

By default an ELB will only send traffic to instances in the region the ELB is in. If you want cross region failover you would need to look here - https://aws.amazon.com/blogs/aws/amazon-route-53-elb-integration-dns-failover/

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