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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-87/">SRE Weekly Issue #87</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-87/">September 3, 2017</a>
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<a href="https://sreweekly.com/sre-weekly-issue-87/" title="Permalink to SRE Weekly Issue #87" class="email_only">View on sreweekly.com</a>
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<h2 style="text-align: center; font-size: 55%; color: #b0b0b0;">SPONSOR MESSAGE</h2>
<p>More efficiently reach on-call teams and incident responders with a new way to deploy Live Call Routing using Twilio Functions and VictorOps. Check it out:<br />
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<h2>Articles</h2>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://www.kitchensoap.com/2017/08/12/multiple-perspectives-on-technical-problems-and-solutions/" target="_blank">Multiple Perspectives On Technical Problems and Solutions</a></div>
<div class="sreweekly-description">
<p>John Allspaw describes the Architecture Review Working Group at Etsy. I like the idea of an open discussion with peers before creating a novel system that will add significant operational burden.</p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://victorops.com/blog/post-incident-reviews-part-two-the-demise-of-root-cause-analysis/" target="_blank">Post-Incident Reviews Part Two: The Demise of Root Cause Analysis</a></div>
<div class="sreweekly-description">
<p>Here&#8217;s part two of Jason Hand&#8217;s series of posts with key takeaways from his new eBook, &#8220;Post-Incident Reviews&#8221;. In the next three chapters, he shows why a traditional RCA process misses the mark.</p>
<blockquote><p>[&#8230;] problems stem — not from one primary cause — but from the complex interplay of our systems and the teams tasked with managing them.</p></blockquote>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://honeycomb.io/blog/2017/08/observability-whats-in-a-name/" target="_blank">Observability: What&#8217;s In a Name?</a></div>
<div class="sreweekly-description">
<p><a href="https://honeycomb.io">Honeycomb.io</a> eschews plain monitoring in favor of &#8220;observability&#8221;, which they define as the ability to &#8220;ask any arbitrary question&#8221; about a system.</p>
<blockquote><p>But here’s the thing: in distributed systems, or in any mature, complex application of scale built by good engineers&#8230; <b>the majority of your questions trend towards the unknown-unknown.</b></p></blockquote>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://siliconangle.com/blog/2017/08/27/serverless-computing-functional-stateless-microservices/" target="_blank">Serverless computing: It’s all about functional stateless microservices</a></div>
<div class="sreweekly-description">
<p>Here&#8217;s another primer on microservices. It has a nice &#8220;caveats&#8221; section, which is exactly where operations and reliability come into the picture.</p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://code.facebook.com/posts/270314900139291/rapid-release-at-massive-scale/" target="_blank">Rapid release at massive scale</a></div>
<div class="sreweekly-description">
<p>Facebook shared a lot of detail about how they evolved from 3 daily pushes to quasi-continuous releases. They&#8217;ve got a well-defined canary system, reminding me of Charity&#8217;s article on testing in production last week.</p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.appdynamics.com/lp/10-essential-skills-of-a-site-reliability-engineer/" target="_blank">10 Essential Skills of a Site Reliability Engineer</a></div>
<div class="sreweekly-description">
<p>AppDynamics presents their list in shiny PDF form. You&#8217;ll have to fill in your <s>spam-bucket address</s> contact info to download it.</p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.pagerduty.com/blog/breakathon-details/" target="_blank">Everything You Need to Know About Our Breakathon</a></div>
<div class="sreweekly-description">
<p>PagerDuty is hosting a &#8220;breakathon&#8221;: small teams will compete to resolve a series of infrastructure issues. Sounds like bunch of fun!</p>
</div>
</div>
<h2>Outages</h2>
<ul class="sreweekly-outages">
<li><a href="https://bgpmon.net/bgp-leak-causing-internet-outages-in-japan-and-beyond/">Japan</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">Google accidentally announced some BGP prefixes it shouldn&#8217;t have, taking Japan offline for a couple of hours. Linked above is a really neat in-depth analysis from <a href="https://bgpmon.net/">BGPmon</a>, for all you BGP geeks out there.<br />
<blockquote><p>Since Google essentially leaked a full table towards Verizon, we get to peek into what Google’s peering relationships look like and how their peers traffic engineer towards Google.</p></blockquote>
</li>
</ul>
</li>
<li><a href="https://status.heroku.com/incidents/1273">Heroku</a></li>
<li><a href="http://status.aws.amazon.com/">AWS</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">EC2&#8217;s Ireland region suffered an outage in VPC peering on August 23. Their status site doesn&#8217;t allow for deep links, so here&#8217;s an excerpt:<br />
<blockquote><p><tt>11:32 AM PDT</tt> We are investigating network connectivity issues for some instances in the EU-WEST-1 Region.</p>
<p><tt>11:55 AM PDT</tt> We have identified root cause of the network connectivity issues in the EU-WEST-1 Region. Connectivity between peered VPCs is affected by this issue. Connectivity between instances within a VPC or between instances and the Internet or AWS services is not affected. We continue to work towards full recovery.</p>
<p><tt>12:51 PM PDT</tt> Between 10:32 AM and 12:44 PM PDT we experienced connectivity issues when using VPC peering in the EU-WEST-1 Region. Connectivity between instances in the same VPC and from instances to the Internet or AWS services was not affected. The issue has been resolved and the service is operating normally.</p></blockquote>
</li>
</ul>
</li>
<li><a href="https://status.cloud.google.com/incident/cloud-networking/17002#5665117697998848">Google Cloud</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">Google Cloud suffered a massive 30-hour worldwide outage in some cloud load-balancers. In their impressive style, they posted frequent updates during the incident and issued a followup analysis of the incident just 2 days after resolution.<br />
<blockquote><p>In order to prevent the issue, Google engineers are working to enhance automated canary testing that simulates live-migration events, detection of load balancing packets loss, and enforce more restrictions on new configuration changes deployment for internal representation changes.</p></blockquote>
</li>
</ul>
</li>
<li><a href="http://gadgets.ndtv.com/apps/news/whatsapp-is-down-for-many-users-1744639">WhatsApp</a></li>
<li><a href="http://www.esports-news.co.uk/2017/08/31/twitch-is-down/">Twitch (video streaming service)</a></li>
</ul>
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