nova-docker and environment variables
nova-docker driver lets Nova, the OpenStack Compute service,
spawn Docker containers instead of hypervisor-based servers. For
certain workloads, this leads to better resource utilization than you
would get with …
lvcache: a tool for managing LVM caches
Until recently I had a bcache based setup on my laptop, but when forced by circumstance to reinstall everything I spent some time looking for alternatives that were less disruptive to configure on an existing system.read more
Four ways to connect a docker container to a local network
Update (2018-03-22) Since I wrote this document back in 2014, Docker has developed the macvlan network driver. That gives you a supported mechanism for direct connectivity to a local layer 2 network. I've written an article about working with the macvlan driver.
This article discusses four ways to make a …read more
gpio-watch: Run scripts in response to GPIO signals
For a small project I'm working on I needed to attach a few buttons to a Raspberry Pi and have some code execute in response to the button presses.
Normally I would reach for Python for a simple project like this, but constraints of the project made it necessary to implement something in C with minimal dependencies. I didn't want to write something that was tied closely to my project...read more