I've fired up some of the example instances of Wordpress and MySQL with Juju. A coworker has told me that the default instance size is "small". I'd like to be able to scale this to different sizes on Amazon EC2.
How can I adjust this, is this something defined in a formula or is it an argument I can pass Juju on the command line?
Let's say for example I wanted to deploy wordpress on "large" amazon instances.