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<article id="post-677" class="single-view post-677 post type-post status-publish format-standard hentry category-general" itemprop="blogPost" itemscope itemtype="http://schema.org/BlogPosting">
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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-129/">SRE Weekly Issue #129</a></h1>
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<div class="entry-date" itemprop="datePublished" >
<i class="genericon genericon-day"></i><a class="updated" href="https://sreweekly.com/sre-weekly-issue-129/">July 8, 2018</a>
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<a href="https://sreweekly.com/sre-weekly-issue-129/" title="Permalink to SRE Weekly Issue #129" class="email_only">View on sreweekly.com</a>
<div class="sreweekly-sponsor-message" style="border: 1px solid #b0b0b0; padding-left: 1rem; padding-right: 1rem; width: 80%; align: center; margin: 2rem auto 2rem auto;">
<h2 style="text-align: center; font-size: 55%; color: #b0b0b0;">SPONSOR MESSAGE</h2>
<p>Aggregate monitoring techniques alongside time series data can improve overall system visibility and reliability. Take SRE to the next level with these aggregate monitoring methods:</p>
<p><a href="http://try.victorops.com/SREWeekly/Aggregate-Monitoring">http://try.victorops.com/SREWeekly/Aggregate-Monitoring</a></p>
</div>
<h2>Articles</h2>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://medium.com/booking-com-infrastructure/linux-kernel-bug-hunting-35f648c8dbb7" target="_blank">Linux Kernel bug hunting</a></div>
<div class="sreweekly-description">
<p>What do you do when your hosts have kernel crashes at random every day? It turns out that you don&#8217;t need to be a seasoned kernel programmer to find a solution.</p>
<p><small>Pavlos Parissis — Booking.com</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://blog.afoolishmanifesto.com/posts/detecting-who-used-ec2-metadata-server-bcc/?utm_source=last_week_in_AWS&amp;utm_medium=newsletter&amp;utm_campaign=website&amp;utm_source=Last%20Week%20in%20AWS&amp;utm_medium=email" target="_blank">Detecting who used the EC2 metadata server with BCC</a></div>
<div class="sreweekly-description">
<p>This is my first introduction <code>tcpconnect</code> (part of BCC). Pretty nifty!</p>
<p><small>fREW Schmidt</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://code.fb.com/data-infrastructure/spiral-self-tuning-services-via-real-time-machine-learning/" target="_blank">Spiral: Self-tuning services via real-time machine learning – Facebook Code</a></div>
<div class="sreweekly-description">
<blockquote><p>At Facebook, [&#8230;] It is simply too difficult to rewrite caching/admission/eviction policies and other manually tuned heuristics by hand. We have to fundamentally change how we think about software maintenance.</p></blockquote>
<p><small>Vladimir Bychkovsky, Jim Cipar, Alvin Wen, Lili Hu, and Saurav Mohapatra — Facebook<br />
</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://michael-kehoe.io/post/chaos-gameday-template/" target="_blank">A Chaos Engineering Gameday Report Template</a></div>
<div class="sreweekly-description">
<p>A couple weeks back, I linked to a postmortem template. Here&#8217;s a gameday report template from the same author.</p>
<p><small>Michael Kehoe</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://medium.com/@cfatechblog/bare-metal-k8s-clustering-at-chick-fil-a-scale-7b0607bd3541" target="_blank">Bare Metal K8s Clustering at Chick-fil-A Scale</a></div>
<div class="sreweekly-description">
<p>I had a really hard time choosing whether to include this one. On the one hand, it&#8217;s a really interesting article about service discovery in franchises that has to work right every time. On the other hand, Chick-fil-A has a <a href="https://en.wikipedia.org/wiki/Chick-fil-A_same-sex_marriage_controversy">terrible track record on GLBT rights</a>, and I can&#8217;t overlook that.</p>
<p>Ultimately, I&#8217;m choosing to link to this article for its educational content, but I urge you to join me as I continue to boycott Chick-fil-A.</p>
<p><small> Brian Chambers, Caleb Hurd, and Alex Crane — Chick-fil-A</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://blogs.msdn.microsoft.com/elee/2009/03/11/source-code-is-a-liability-not-an-asset/" target="_blank">Source Code Is A Liability, Not An Asset</a></div>
<div class="sreweekly-description">
<p>At 9 years old, this may be the oldest article I&#8217;ve linked to, but it&#8217;s worth it. The analogy to a home mortage is spot on.</p>
<p><small>Eric Lee</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://blog.plaid.com/scaling-a-monitoring-platform/" target="_blank">Scaling a monitoring platform to over 9,600 bank integrations</a></div>
<div class="sreweekly-description">
<p>Click through to read about an interesting monitoring challenge and an account of how they solved it. I appreciate the emphasis on the importance of educating engineers to spread the knowledge of how the new system works among more people.</p>
<p><small>Joy Zheng and Jeeyoung Kim — Plaid</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://blog.codecentric.de/en/2018/07/chaos-engineering/" target="_blank">Chaos Engineering &#8211; withstanding turbulent conditions in production</a></div>
<div class="sreweekly-description">
<p>Another chaos engineering introduction. Why should you read it? If nothing else, the architecture diagram with the skull and cobwebs on it is pretty great. It&#8217;s also well worth reading if you&#8217;re looking to create a chaos engineering game plan.</p>
<p><small>Benjamin Wilms — Codecentric</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://arstechnica.com/gaming/news/2011/07/monocles.ars" target="_blank">Leaks, riots, and monocles: How a $60 in-game item almost destroyed EVE Online</a></div>
<div class="sreweekly-description">
<p>Sometimes, a reliability risk can come in the form of a bunch of angry customers.</p>
<p><small>Ben Kuchera — Ars Technica</small></p>
</div>
</div>
<h2>Outages</h2>
<ul class="sreweekly-outages">
<li><a href="https://status.fastly.com/incidents/pxsc7wj4sbds">Fastly</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage"><small><em>Full disclosure: Fastly is my employer.</em></small></li>
</ul>
</li>
<li><a href="https://status.cloud.google.com/incident/cloud-iam/18001#18001004">Google Cloud Console</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">This is a followup post for an incident on June 27. Another great example of a complex, multi-level failure.</li>
</ul>
</li>
<li><a href="https://status.cloud.google.com/incident/compute/18007#18007007">Google Cloud networking in europe-west1-b and europe-west4-b</a></li>
<li><a href="http://feedproxy.google.com/~r/HerokuStatus/~3/9M39T3vO22Q/1576">Heroku</a></li>
<li><a href="https://www.phonearena.com/news/Company-wide-network-outage-affected-Disney-apps-website-ESPN-and-more-company-is-now-back-online_id106402">Disney</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">Another outage involving the Disney app and the Fastpass system.</li>
</ul>
</li>
<li><a href="https://www.theverge.com/2018/7/7/17544196/moviepass-outage-movies-problems-apps">MoviePass</a></li>
</ul>
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