Transform Ubuntu 12.04 Into Mac OS X Lion

“This is a simple tutorial to convert your Ubuntu 12.04 installation into Mac OS X lion (almost).First we have to add a PPA to begin the transformation. Just open your terminal and type below commands to add that PPA…”

http://sajithdilshan.github.com/blog/blog/2012/08/07/transform-ubuntu-12-dot-04-into-mac-os-x-lion/

Juju provides service orchestration

“Juju focuses on managing the service units you need to deliver a single solution, above simply configuring the machines or cloud instances needed to run them. Charms developed, tested, and deployed on your own hardware will operate the same in an EC2 API compatible cloud…”

https://juju.ubuntu.com/

“The local provider allows for deploying services directly against the local/host machine using LXC containers with the goal of experimenting with juju and developing formulas.

The local provider has some additional package dependencies. Attempts to use this provider without these packages installed will terminate with a message indicating the missing packages…”

https://juju.ubuntu.com/docs/provider-configuration-local.html

Ubuntu 12.04 LTS Precise Pangolin: Building a Firewall

“The default firewall configuration tool for Ubuntu is known as ‘UFW’. Developed to ease iptables firewall configuration, UFW provides a user-friendly way to create an IPv4 or IPv6 host-based firewall that will serve to protect your computer from un-authorised access and in this article I am going to show you how to setup, configure and manage your security needs on Ubuntu 12.04 LTS Precise Pangolin…”

http://www.sitepoint.com/ubuntu-12-04-lts-precise-pangolin-building-a-firewall/

Virtualization in the EC2 cloud using LXC

“EC2 is already a (para)virtualized environment, which means it’s nearly impossible to run your own virtualization (KVM/VirtualBox/qemu) from inside that environment. However, Linux recently introduced a new system into the kernel, called cgroups, which provides a way to isolate process groups from each other in the kernel. A project was soon formed around this new technology, which allows for very thin, fast, and secure quasi-virtualization. It’s called LXC, short for LinuX Containers. And it works in EC2 perfectly…”

http://www.activestate.com/blog/2011/10/virtualization-ec2-cloud-using-lxc