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<h1><a href="/">Automate All the Things!</a></h1>
<h2>Doug Ireton's blog about Chef, Git, Ruby, Vim, and Infrastructure Automation</h2>
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<article>
<header>
<h1 class="entry-title"><a href="/blog/2013/06/23/encouraging-women-in-dev-slash-ops/">Encouraging Women in Dev/Ops</a></h1>
<p class="meta">
<time datetime="2013-06-23T21:00:00-07:00" pubdate data-updated="true">Jun 23<span>rd</span>, 2013</time>
| <a href="/blog/2013/06/23/encouraging-women-in-dev-slash-ops/#disqus_thread">Comments</a>
</p>
</header>
<div class="entry-content"><p>This past week, I went to <a href="http://velocityconf.com/velocity2013">Velocity</a> and <a href="http://devopsdays.org/events/2013-mountainview/program/">DevOps Days</a> in Silicon Valley, CA. Both
conferences were amazing and I learned a ton. During DevOps Days I led an <a href="http://martinfowler.com/bliki/OpenSpace.html">Open Space</a> session on “Encouraging Women in Dev/Ops”. I was humbled by the number of people who attended and their passion for the topic. Read on for a summary of
my notes taken during the hour we had.</p>
</div>
<footer>
<a rel="full-article" href="/blog/2013/06/23/encouraging-women-in-dev-slash-ops/">Read on →</a>
</footer>
</article>
<article>
<header>
<h1 class="entry-title"><a href="/blog/2013/05/19/ruby-fundamentals-using-custom-setters-to-clean-up-instance-variables/">Ruby Fundamentals: Using Custom Setters to Clean Up Instance Variables</a></h1>
<p class="meta">
<time datetime="2013-05-19T21:56:00-07:00" pubdate data-updated="true">May 19<span>th</span>, 2013</time>
| <a href="/blog/2013/05/19/ruby-fundamentals-using-custom-setters-to-clean-up-instance-variables/#disqus_thread">Comments</a>
</p>
</header>
<div class="entry-content"><p>Ohai Fellow Rubyists!</p>
<p>This week we’re going to look at using custom setter methods in your Ruby class
initializers to do any custom logic before setting instance variables. I just
had to do this last week for a gem I’m writing. Here’s a quick snippet. Read on
for the full explanation.</p>
<figure class='code'><figcaption><span></span></figcaption><div class="highlight"><table><tr><td class="gutter"><pre class="line-numbers"><span class='line-number'>1</span>
<span class='line-number'>2</span>
<span class='line-number'>3</span>
<span class='line-number'>4</span>
<span class='line-number'>5</span>
<span class='line-number'>6</span>
<span class='line-number'>7</span>
<span class='line-number'>8</span>
<span class='line-number'>9</span>
<span class='line-number'>10</span>
<span class='line-number'>11</span>
<span class='line-number'>12</span>
<span class='line-number'>13</span>
<span class='line-number'>14</span>
<span class='line-number'>15</span>
<span class='line-number'>16</span>
<span class='line-number'>17</span>
<span class='line-number'>18</span>
<span class='line-number'>19</span>
<span class='line-number'>20</span>
<span class='line-number'>21</span>
<span class='line-number'>22</span>
<span class='line-number'>23</span>
<span class='line-number'>24</span>
<span class='line-number'>25</span>
</pre></td><td class='code'><pre><code class='ruby'><span class='line'><span class="k">class</span> <span class="nc">StashNotifier</span>
</span><span class='line'> <span class="kp">attr_reader</span> <span class="ss">:job_status</span>
</span><span class='line'>
</span><span class='line'> <span class="no">VALID_JOB_STATUSES</span> <span class="o">=</span> <span class="sx">%w{ INPROGRESS SUCCESSFUL FAILED }</span>
</span><span class='line'>
</span><span class='line'> <span class="k">def</span> <span class="nf">initialize</span><span class="p">(</span><span class="n">args</span><span class="p">)</span>
</span><span class='line'> <span class="c1"># other instance vars omitted</span>
</span><span class='line'> <span class="nb">self</span><span class="o">.</span><span class="n">job_status</span> <span class="o">=</span> <span class="n">args</span><span class="o">[</span><span class="ss">:job_status</span><span class="o">]</span> <span class="c1"># <= call the custom setter</span>
</span><span class='line'> <span class="vi">@job_key</span> <span class="o">=</span> <span class="n">args</span><span class="o">[</span><span class="ss">:job_key</span><span class="o">]</span>
</span><span class='line'> <span class="vi">@job_url</span> <span class="o">=</span> <span class="n">args</span><span class="o">[</span><span class="ss">:job_url</span><span class="o">]</span>
</span><span class='line'> <span class="k">end</span>
</span><span class='line'>
</span><span class='line'> <span class="c1"># custom setter method</span>
</span><span class='line'> <span class="k">def</span> <span class="nf">job_status</span><span class="o">=</span><span class="p">(</span><span class="n">new_job_status</span><span class="p">)</span>
</span><span class='line'> <span class="n">new_job_status</span> <span class="o">=</span> <span class="n">new_job_status</span><span class="o">.</span><span class="n">strip</span><span class="o">.</span><span class="n">upcase</span>
</span><span class='line'>
</span><span class='line'> <span class="k">if</span> <span class="no">VALID_JOB_STATUSES</span><span class="o">.</span><span class="n">include?</span><span class="p">(</span><span class="n">new_job_status</span><span class="p">)</span>
</span><span class='line'> <span class="vi">@job_status</span> <span class="o">=</span> <span class="n">new_job_status</span>
</span><span class='line'> <span class="k">else</span>
</span><span class='line'> <span class="k">raise</span> <span class="no">ArgumentError</span><span class="p">,</span> <span class="s2">"'</span><span class="si">#{</span><span class="n">new_job_status</span><span class="si">}</span><span class="s2">' is not a valid Stash Build</span>
</span><span class='line'><span class="s2">Status! Valid job statuses are </span><span class="si">#{</span><span class="no">VALID_JOB_STATUSES</span><span class="si">}</span><span class="s2">."</span>
</span><span class='line'> <span class="k">end</span>
</span><span class='line'> <span class="k">end</span>
</span><span class='line'><span class="c1"># rest of class omitted</span>
</span><span class='line'><span class="k">end</span>
</span></code></pre></td></tr></table></div></figure>
</div>
<footer>
<a rel="full-article" href="/blog/2013/05/19/ruby-fundamentals-using-custom-setters-to-clean-up-instance-variables/">Read on →</a>
</footer>
</article>
<article>
<header>
<h1 class="entry-title"><a href="/blog/2013/05/12/how-to-present-at-a-tech-conference/">How to Present at a Tech Conference</a></h1>
<p class="meta">
<time datetime="2013-05-12T21:33:00-07:00" pubdate data-updated="true">May 12<span>th</span>, 2013</time>
| <a href="/blog/2013/05/12/how-to-present-at-a-tech-conference/#disqus_thread">Comments</a>
</p>
</header>
<div class="entry-content"><p>Ohai Chefs!</p>
<p>This week I’ll share my tips and tricks for presenting at a tech conference,
based on my vast experience of one conference. So, take it with several grains
of salt.</p>
</div>
<footer>
<a rel="full-article" href="/blog/2013/05/12/how-to-present-at-a-tech-conference/">Read on →</a>
</footer>
</article>
<article>
<header>
<h1 class="entry-title"><a href="/blog/2013/04/14/will-you-join-us/">Will You Join Us?</a></h1>
<p class="meta">
<time datetime="2013-04-14T21:00:00-07:00" pubdate data-updated="true">Apr 14<span>th</span>, 2013</time>
| <a href="/blog/2013/04/14/will-you-join-us/#disqus_thread">Comments</a>
</p>
</header>
<div class="entry-content"><p>Ohai Chefs!</p>
<p>This week, the week before Chef Conf, I’d like to talk a bit about our team and our culture, and invite you to join us.</p>
<p><img src="/images/infeng_area.png" width="450" height="300" title="'Our work area'" ></p>
<h2>tl;dr</h2>
<p>We have a spot on our Infrastructure Engineering team, and I hope you’ll read on to get a personal feel for our team and the huge cultural shift happening right now at Nordstrom.</p>
<p>If you are interested, please email me: doug.ireton at nordstrom.com</p>
</div>
<footer>
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</article>
<article>
<header>
<h1 class="entry-title"><a href="/blog/2013/04/06/favorites-from-the-treasure-chest/">Favorites From the Treasure Chest</a></h1>
<p class="meta">
<time datetime="2013-04-06T07:51:00-07:00" pubdate data-updated="true">Apr 6<span>th</span>, 2013</time>
| <a href="/blog/2013/04/06/favorites-from-the-treasure-chest/#disqus_thread">Comments</a>
</p>
</header>
<div class="entry-content"><p>Ohai Chefs!</p>
<p>Work has been busy and I’ve been working on my <a href="http://chefconf.opscode.com/">Chef Conf</a> presentation in my “free” time, so this week I’m rounding up some links I think you’ll like.</p>
<ol>
<li><p><a href="http://jtimberman.housepub.org/blog/2013/02/16/last-check-in-time-for-nodes/">Last check-in time for nodes</a> by Josh Timberman. Nice short post with great explanations.</p></li>
<li><p><a href="http://erik.hollensbe.org/2013/03/16/the-chef-resource-run-queue/">How the Chef client builds the Resource Collection queue</a> by Eric Hollensbe. I have a much better understanding of how a Chef run actually works after reading this.</p></li>
<li><p>Good <a href="https://speakerdeck.com/nathenharvey/testing-your-automation">overview of Chef testing</a> by Nathen Harvey.</p></li>
<li><p>Also see Joshua Timberman’s <a href="http://jtimberman.housepub.org/blog/2013/03/19/anatomy-of-a-test-kitchen-1-dot-0-cookbook-part-1/">Anatomy of a Test Kitchen 1.0 Cookbook</a> for more testing goodness.</p></li>
</ol>
</div>
<footer>
<a rel="full-article" href="/blog/2013/04/06/favorites-from-the-treasure-chest/">Read on →</a>
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<article>
<header>
<h1 class="entry-title"><a href="/blog/2013/03/31/chef-wanted-apply-within/">Chef Wanted. Apply Within</a></h1>
<p class="meta">
<time datetime="2013-03-31T19:54:00-07:00" pubdate data-updated="true">Mar 31<span>st</span>, 2013</time>
| <a href="/blog/2013/03/31/chef-wanted-apply-within/#disqus_thread">Comments</a>
</p>
</header>
<div class="entry-content"><p>Ohai Chefs!</p>
<p>This week, we’ll take a look at <a href="http://tickets.opscode.com/browse/CHEF-3571"><code>chef-apply</code></a>, a command-line tool, new to Chef 11, which assists with rapid development and troubleshooting by letting you run a single recipe at a time.</p>
</div>
</article>
<article>
<header>
<h1 class="entry-title"><a href="/blog/2013/03/24/ruby-p-i-e/">Ruby -p -i -e</a></h1>
<p class="meta">
<time datetime="2013-03-24T21:28:00-07:00" pubdate data-updated="true">Mar 24<span>th</span>, 2013</time>
| <a href="/blog/2013/03/24/ruby-p-i-e/#disqus_thread">Comments</a>
</p>
</header>
<div class="entry-content"><p>This week we’ll look at a practical example of combining a simple shell script with a Ruby one-liner to set and unset environment variables.</p>
<h2><a href="http://www.youtube.com/watch?v=bKK-KLDlm20">The Tragic Backstory</a></h2>
<p>At work, we have to go through a proxy server to get to the Internet. To use git, curl, etc. I have to set my <code>http(s)_proxy</code> environment varables. At home I have to unset them since I don’t have a proxy at home. Editing my .zshenv twice a day got pretty tedious so I decided to script it.</p>
<p>At first I tried using sed but after trying for an hour to understand how to write a simple sed script, I opted for Ruby. As it turns out, Ruby has very good support for line-editing and substitution.</p>
</div>
<footer>
<a rel="full-article" href="/blog/2013/03/24/ruby-p-i-e/">Read on →</a>
</footer>
</article>
<article>
<header>
<h1 class="entry-title"><a href="/blog/2013/03/17/a-knife-dot-rb-for-our-time/">A knife.rb for Our Time</a></h1>
<p class="meta">
<time datetime="2013-03-17T20:44:00-07:00" pubdate data-updated="true">Mar 17<span>th</span>, 2013</time>
| <a href="/blog/2013/03/17/a-knife-dot-rb-for-our-time/#disqus_thread">Comments</a>
</p>
</header>
<div class="entry-content"><p>Ohai Chefs!</p>
<p>The basic knife.rb you get from the Chef server works, but it’s not suitable to check into version control or share with your team. It has the name of your .pem file hardcoded into it and isn’t flexible enough for team use. This week we’ll look at a generic, flexible <code>knife.rb</code> you can keep in your <code>chef-repo</code> and share with your team.</p>
</div>
<footer>
<a rel="full-article" href="/blog/2013/03/17/a-knife-dot-rb-for-our-time/">Read on →</a>
</footer>
</article>
<article>
<header>
<h1 class="entry-title"><a href="/blog/2013/03/07/flip-your-unicorn/">Flip Your Unicorn!</a></h1>
<p class="meta">
<time datetime="2013-03-07T20:47:00-08:00" pubdate data-updated="true">Mar 7<span>th</span>, 2013</time>
| <a href="/blog/2013/03/07/flip-your-unicorn/#disqus_thread">Comments</a>
</p>
</header>
<div class="entry-content"><p>Let’s say you had a unicorn in your code. Maybe something like this:</p>
<pre>
________
.##@@&&&@@##.
\ ,##@&::%&&%%::&@##.
^\^ #@&:%%000000000%%:&@#
/.((( #@&:%00' '00%:&@#
(,/"(((__,--. #@&:%0' '0%:&@#
\ ) _( /{ #@&:%0 0%:&@#
!|| " :|| #@&:%0 0%:&@#
!|| :|| #@&:%0 0%:&@#
''' ''' "" ' " " ' ""
</pre>
<h2>But it’s so wrong!</h2>
<p>Clearly, something is wrong with the unicorn. It’s not facing the rainbow. This week, we’ll learn how to flip the unicorn (or any other text) with an awesome Vim <a href="http://www.drchip.org/astronaut/vim/index.html#Maps">Visual mode mapping</a> courtesy of the inimitable <a href="http://www.drchip.org/astronaut/vim/index.html">Dr. Chip</a></p>
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<header>
<h1 class="entry-title"><a href="/blog/2013/03/02/send-application-deploy-times-to-statsd-in-a-chef-recipe/">Send Application Deploy Times to StatsD in a Chef Recipe</a></h1>
<p class="meta">
<time datetime="2013-03-02T14:48:00-08:00" pubdate data-updated="true">Mar 2<span>nd</span>, 2013</time>
| <a href="/blog/2013/03/02/send-application-deploy-times-to-statsd-in-a-chef-recipe/#disqus_thread">Comments</a>
</p>
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<div class="entry-content"><p>Ohai Chefs!</p>
<p>This week, I’ll show you how to time application deploys (or anything else) inside a Chef recipe and send metrics to <a href="http://codeascraft.etsy.com/2011/02/15/measure-anything-measure-everything/">StatsD</a>.</p>
<p>At work, we’re working to integrate metrics into more and more aspects of our development pipeline. We are already sending Chef run data to Graphite and <a href="http://codeascraft.etsy.com/2011/02/15/measure-anything-measure-everything/">Chef client version metrics</a> to StatsD/Graphite. This past week, I worked on timing our application deploys via the <a href="https://github.com/reinh/statsd">Statsd-Ruby</a> library inside a Chef recipe. Read on to see how easy it is.</p>
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<a rel="full-article" href="/blog/2013/03/02/send-application-deploy-times-to-statsd-in-a-chef-recipe/">Read on →</a>
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