我可以更改我的亚马逊 EC2 实例的根 EBS 设备吗? [英] Can I change the root EBS device of my amazon EC2 instance?

问题描述

我有一个 EBS 支持的 Amazon EC2 实例.我想更改此实例上的根设备.你能建议最好的方法吗?

I have an EBS backed Amazon EC2 instance. I would like to change the root device on this instance. Can you please advise the best way to go about this?

我只找到关于更改块设备的几个属性的文档，但它们似乎不包括将其设置为根设备.

I only find documentation on changing several attributes of block devices, but they don't seem to include setting it as the root device.

推荐答案

是的，这很容易:

1. 停止实例.
2. 分离根 EBS 卷.
3. 将备用 EBS 卷附加为根:/dev/sda1
4. 启动实例.

当然，这假定您的备用 EBS 卷是可启动的 - 它必须包含可启动的操作系统映像.

This presupposes that your alternate EBS volume is bootable, of course - it has to contain the bootable OS image.

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