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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-81/">SRE Weekly Issue #81</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-81/">July 16, 2017</a>
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<a href="https://sreweekly.com/sre-weekly-issue-81/" title="Permalink to SRE Weekly Issue #81" 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>The definitive guide for DevOps Post-Incident Reviews (AKA &#8211; Postmortems). Learn why traditional methods don’t work &#8211; and why fast incident response isn’t enough. Download your free copy of the 90+ page eBook from O’Reilly Media and VictorOps.<br />
<a href="http://try.victorops.com/post_incident_review/SREWeekly">http://try.victorops.com/post_incident_review/SREWeekly</a></p>
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<h2>Articles</h2>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.pagerduty.com/blog/failure-fridays-four-years/" target="_blank">Failure Fridays: Four Years On</a></div>
<div class="sreweekly-description">
<p>PagerDuty shared this timeline of their progress in adopting Chaos Engineering through their Failure Friday program. This is brilliant:</p>
<blockquote><p>We realized that Failure Fridays were a great opportunity to exercise our Incident Response process, so we started using it as a training ground for our newest Incident Commanders before they graduated.</p></blockquote>
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<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://developer.capitalone.com/blog-post/how-platforms-and-sres-change-the-devops-contract/" target="_blank">How Platforms and SREs Change the DevOps Contract</a></div>
<div class="sreweekly-description">
<p>I&#8217;m a big proponent of having developers own their code in production. This article posits that SRE&#8217;s job is to provide a platform that enables developers to do that more easily. I like the idea that containers and serverless are ways of getting developers closer to operations.</p>
<blockquote><p>These platforms and the CI/CD pipelines they enable make it easier than ever for teams to own their code from desktop to production.</p></blockquote>
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<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://uk.businessinsider.com/interview-aws-werner-vogels-amazon-outages-2017-7" target="_blank">Interview with AWS&#8217;s Werner Vogels about response to Amazon outages</a></div>
<div class="sreweekly-description">
<p>This reads less like an interview and more like a description of Amazon&#8217;s incident response procedure. I started paying close attention at step 3, &#8220;Learn from it&#8221;:</p>
<blockquote><p>Vogels places the blame not on the engineer directly responsible, but Amazon itself, for not having failsafes that could have protected its systems or prevented the incorrect input.</p></blockquote>
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<div class="sreweekly-title"><a href="https://victorops.com/blog/from-scala-unified-logging-to-full-system-observabilitypart-1-our-original-state-of-logging/" target="_blank">From Scala Unified Logging to Full System Observability &#8212; Part 1 of 3: Our Original State of Logging</a></div>
<div class="sreweekly-description">
<blockquote><p>Jonathan is a platform engineer at VictorOps, responsible for system scalability and performance. This is Part 1 in a 3-part series on system visibility, the detection part of incident management.</p></blockquote>
<p><small><em>This article is published by my sponsor, VictorOps, but their sponsorship did not influence its inclusion in this issue.</em></small></p>
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<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="http://sdtimes.com/site-reliability-engineer-dont-fall-victim-to-the-bias-blind-spot/" target="_blank">Site Reliability Engineer: Don’t fall victim to the bias blind spot</a></div>
<div class="sreweekly-description">
<p>This article is about a different kind of human factor than articles I often link to: cognitive bias. The author presents a case for SREs as working to limit the effects of cognitive bias in making operational decisions.</p>
</div>
</div>
<h2>Outages</h2>
<ul class="sreweekly-outages">
<li><a href="https://www.theregister.co.uk/2017/07/13/watercooling_leak_killed_vnx_array/">OVH</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage"><a href="https://www.ovh.com/us/">OVH</a> suffered a major outage in a datacenter, taking down 50,000 websites that they host. The outage was caused by a leak in their custom water-cooling system and resulted in a painfully long 24-hour recovery from an offsite backup. The Register&#8217;s report (linked) is based on OVH&#8217;s incident log and is the most interesting datacenter outage description I&#8217;ve read this year.</li>
</ul>
</li>
<li><a href="http://status.cloud.google.com/incident/storage/17002#5713144022302720">Google Cloud Storage</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">Google posted this followup for an outage that occurred on July 6th. As usual, it&#8217;s an excellent read filled with lots of juicy details. This caught my eye:<br />
<blockquote><p>[&#8230;] attempts to mitigate the problem caused the error rate to increase to 97%.</p></blockquote>
<p>Apparently this was caused by a &#8220;configuration issue&#8221; and was quickly reverted. It&#8217;s notable that they didn&#8217;t include anything about this error in the remediations section.</li>
</ul>
</li>
<li><a href="http://www.theage.com.au/victoria/metros-80m-backup-system-may-have-failed-at-moment-melbourne-needed-it-20170714-gxbjs6.html">Melbourne, AU&#8217;s Metro rail network</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">A network outage stranded travelers, and switching to the DR site &#8220;wasn&#8217;t an option&#8221;.</li>
</ul>
</li>
<li><a href="http://www.businessghana.com/site/news/politics/148521/Somalia-internet-outage-is-">Somalia</a></li>
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