Creating a Windows image for OpenStack
If you want to build a Windows image for use in your OpenStack environment, you can follow the example in the official documentation, or you can grab a Windows 2012r2 evaluation pre-built image from the nice folks at CloudBase.
The CloudBase-provided image is built using a set of scripts and configuration files that CloudBase has made available on GitHub.
The CloudBase repository is an excellent source of information, but I wanted to understand the process myself. This post describes the process I went through to establish an automated process for generating a Windows image suitable for use with OpenStack.read more
Building Docker images with Puppet
Docker networking with dedicated network containers
The current version of Docker has a very limited set of networking options:
bridge-- connect a container to the Docker bridge
host-- run the container in the global network namespace
container:xxx-- connect a container to the network namespace of another container
none-- do not configure any networking
If you …read more
Integrating custom code with Nova using hooks
Would you like to run some custom Python code when Nova creates and destroys virtual instances on your compute hosts? This is possible using Nova's support for hooks, but the existing documentation is somewhat short on examples, so I've spent some time trying to get things working.
The demo_nova_hooks repository …read more
Stupid command line tricks: Quickly share screen captures
Sometimes you want to quickly share a screenshot with someone. Here's
my favorite mechanism, which assumes you have installed both
and the ImageMagick suite.
$ import png:- | curl -T- -s chunk.io http://chunk.io/f/76ea98ea081748e19de4507fde3c2c65
When you run this command, you cursor will change into crosshairs. Click on …read more