Installing Java on AWS EC2 Instances with Pallet

I have recently been spinning up a lot of t1.micro instances on Amazon's EC2 service. I'm deliberately using minimal / default images, and I need to install Java on them from scratch. There have been reports (and I have experienced myself) that the Java install process hangs indefinitely when installing either Oracle's JRE/JDK or OpenJDK on a t1.micro running Ubuntu. I have been able to install Java successfully by explicitly requiring a 64-bit version of the OS.

Here's how you can do that in your Pallet node-spec:

	;; on AWS, this will default to a size of t1.micro
	(def node-spec
	(pallet.core/node-spec
	:image {:os-family :ubuntu :os-64-bit true}
	:network {:inbound-ports [22]}))

view raw pallet_64bit_ubuntu.clj hosted with ❤ by GitHub