ERROR : An error occurred while installing mysql2 (0.3.11), and Bundler cannot continue.

You need to install ruby-Dev and mysql-Dev packages.

sudo apt-get install ruby-Dev mysql-dev

Could also be Devel instead of Dev, not sure about that at the moment.

Also it may be that you have to purge and reinstall ruby after that to get it working. This part is covered in any ruby with Ubuntu tutorial I am aware of.

Another one is that you really shouldn’t use 10.10 any more. 12.04 is the latest Ubuntu with Long Term Support. 10.10 not supported anymore as far as I remember.

It might have "Long Term Support" but it also includes "Regular
File System Corruption" :slight_smile:

Based on personal experience (substantiated by Rackspace Cloud
support as well as a bit of googling...).

FWIW, YMMV, etc.