Upgrading from Ubuntu 12.10 to 14.04

Seems that a few of my instances in AWS were originally setup using Ubuntu 12.10.  Don’t know how that happened, but anyways.  Now that 12.10 is no longer support you can’t just upgrade.

So the solution is to use the old.releases.ubuntu.com site and update/upgrade from there.

sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak

sudo sed -i -re 's/us-west-2.ec2.archive.ubuntu.com|security.ubuntu.com/old-releases.ubuntu.com/g' /etc/apt/sources.list

sudo apt-get update && sudo apt-get dist-upgrade

sudo do-release-upgrade

This got me to 13.10, then another do-release-upgrade got me to 14.04.5.