Docker for Mac: How to access host services from containers
Update: This workaround is no longer necessary as of Docker for Mac version 17.06, which provides a special Mac-only DNS name docker.for.mac.localhost, which...
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2016
Chromebit-Powered Inforads the Easy Way
At Cozy, we have a number of inforads (information radiators) on a wall, displaying business and software metrics in real time. We built our first inforad so...
2015
Installing Ubiquiti UniFi Controller on Ubuntu in AWS
In this walkthrough we will: install the latest release of the Ubiquiti UniFi Controller software on an AWS EC2 instance configure nginx as a reverse p...
Deobfuscating PHP Malware
This week I was shown some PHP malware in the wild. A coworker was cleaning up a compromised Wordpress install. The web hosting provider had flagged a partic...
2014
Speed up rbenv init via background rehashing
For a long time, new local shell windows on my development machine have taken a painful 2+ seconds to load. It finally bothered me enough to look into it, an...
2013
Asynchronous fun with Celluloid and EventSource, part 1
In my Ops Engineer role, I spend a lot of time running scripts from a shell - code deploy workflows, infrastructure converges, etc. These jobs are automated ...
Protecting chef attributes from overwrites with a loopback mechanism
“Workflow is hard” is a perennial complaint among the Opscode Chef users that I know. If you have multiple committers, multiple tools to update the chef serv...
Commit directly to GitHub via API with Octokit
GitHub’s full-featured API allows us to do really neat things, like commit to a git repository programmatically, without having to have a local git installat...
Knife::Hosts, a plugin to generate host file records
Problem We have a bunch of chef-managed servers that are physical machines hosted at Rackspace. Rackspace’s host naming scheme involves a 6-digit number prec...