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 …read more
Visualizing Heat stacks
I spent some time today learning about Heat autoscaling groups,
which are incredibly nifty but a little opaque from the Heat command
line, since commands such as
heat resource-list don't recurse into
nested stacks. It is possible to introspect these resources (you can
pass the physical resource id of a …