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Showing posts from February, 2013

A workflow of managing Chef with knife

My colleague Jeff Roberts has been trying hard to teach me how to properly manage Chef cookbooks, roles, and nodes using the knife utility. Here is a workflow for doing this in a way that aims to be as close as possible to 'best practices'. This assumes that you already have a Chef server set up.

1) Install chef on your personal machine

In my case, my personal laptop is running OS X (gasp! I used to be a big-time Ubuntu-everywhere user, but I changed my mind after being handed a MacBook Air).

I won't go into the gory details on installing chef locally, but here are a few notes:

 I installed the XCode command line tools, then I installed Homebrew. Note that plain XCode wasn't sufficient, I had to download the dmg package for the command line tools and install that. I installed git via brew. I installed chef viasudo true && curl -L http://opscode.com/chef/install.sh | sudo bash I installed the EC2 plugin for knife viacd /opt/chef/embedded/bin/; sudo ./gem install k…

Some gotchas when installing Octopress on Ubuntu

Here are some quick notes I took while trying to install the Octopress blog engine on a box running Ubuntu 12.04. I tried following the official instructions and I chose the RVM method. The first gotcha is that you have to have the development tools (compilers, linkers etc) installed already. So you need to run:

# apt-get install build-essential


Then I ran the recommended commands in order to install rvm and rubygems:

# curl -L https://get.rvm.io | bash -s stable --ruby
# source /usr/local/rvm/scripts/rvm
# rvm install 1.9.3
# rvm use 1.9.3
# rvm rubygems latest


I then installed git and grabbed the octopress source code:

# apt-get install git
# git clone git://github.com/imathis/octopress.git octopress
# cd octopress/

When trying to install bundler, I got this error:

# gem install bundler

ERROR:  Loading command: install (LoadError)
   cannot load such file -- zlib
ERROR:  While executing gem ... (NameError)
   uninitialized constant Gem::Commands::InstallCommand

Googling around, I found this answer

IT stories from the trenches #2

The year was 1996. I was a graduate student in CS at USC. My first contact with Unix (I had started my career as a programmer in C++ under DOS and later Windows 3.1; yes, I am dating myself big time here!). My first task as a research assistant was to recompile the X server so it can use shared memory extensions. This was part of an experiment that was studying multimedia applications over a high speed proprietary network.

I started optimistically. I got acquainted with the compilers and linkers on the HP-UX platform we were using, I learned all kinds of neat Unix command line utilities, but there was only one glitch -- the X binary wouldn't compile. I tried everything in my power. I even searched on Altavista (no Google in 1996). Nothing worked. Finally, I posted a plea for help on comp.windows.x. A gentle soul by the name of Kaleb Keithley replied first on that thread, then on separate email threads (I was using pine as my email client at the time) and nudged me towards the solu…