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Fundamental differences between Amazon EC2 Ubuntu Server AMI and standard CD install Ubuntu Server

I know that the Ubuntu Server developers change the code so that Ubuntu Server will boot off the virtualisation software that Amazon EC2 use but are there other differences that I should be aware of as a Sys Admin ?

I don't want to move lots of servers to Amazon EC2 and discover a year down the line that some minor difference is giving me problems.
Asked by:
TomPating
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Best Answer

If you start with any of the most recent released Ubuntu images [1], then Ubuntu Server running on EC2 is really just that, a Ubuntu Server running on a virtual system hosted by Amazon. For anything that you find that is different, please open bugs. The best way to open a bug is to run an instance and run 'ubuntu-bug' on an EC2 instance.

The only real difference is that the bootloader is "pv-grub", which is really grub 0.97. Ubuntu Server's bootloader would normally be grub2. In order to manage /boot/grub/menu.lst, a package "grub-legacy-ec2" is installed.

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[1] http://uec-images.ubuntu.com/releases


Response by:
smoser
1 points
Great, thanks for the information.

Response by:
TomPating
1355 points


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