This morning at Mozilla, we had out first ganeti node failure, which meant we got to learn how to deal with a node failure! So far all of our ganeti clusters have been 2 node clusters, so while relatively simple, it meant an extra quirk in bringing everything up. Thankfully we used the iallocator so as to not overallocate nodes on the cluster. Here’s how the process went.
Have you ever needed to perform a Windows install, but lacked the necessary hardware to do an install? After ridding my house of optical drives, and having a limited number of large USB drives, I devised a way to install Windows without the use of either! By using Linux’s wonderful KVM application, it’s possible to install Windows 7 on your hard drive with nothing more than a Windows ISO.
Warning: This information comes without a warranty. I won’t guarantee support if you break your hardware. I’m not responsible for anything you do with this information. For entertainment purposes only. I’m probably lying.