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<h1 class="entry-title" itemprop="headline" ><a href="https://sreweekly.com/sre-weekly-issue-291/">SRE Weekly Issue #291</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-291/">October 10, 2021</a>
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<a href="https://sreweekly.com/sre-weekly-issue-291/" title="Permalink to SRE Weekly Issue #291" class="email_only">View on sreweekly.com</a>
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<h2 style="text-align: center; font-size: 80%; color: #909090;">A message from our sponsor, <a href="https://rootly.io/?utm_source=sreweekly">Rootly</a>:</h2>
<p>Manage incidents directly from Slack with Rootly 🚒. Automate manual admin tasks like creating incident channel, Jira and Zoom, paging the right team, postmortem timeline, setting up reminders, and more. Book a demo:<br />
<a href="https://rootly.io/?utm_source=sreweekly">https://rootly.io/?utm_source=sreweekly</a></p>
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<h2>Articles</h2>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://blog.cloudflare.com/october-2021-facebook-outage/" target="_blank">Understanding How Facebook Disappeared from the Internet</a></div>
<div class="sreweekly-description">
<p>Facebook&#8217;s outage caused significantly increased load on DNS resolvers, among other effects. Cloudflare also published this <a href="https://blog.cloudflare.com/during-the-facebook-outage/">followup article</a> with more findings.</p>
<p><small>Celso Martinho and Sabina Zejnilovic — Cloudflare</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.npr.org/programs/invisibilia/481887848/the-new-norm" target="_blank">The New Norm</a></div>
<div class="sreweekly-description">
<p>Shell (the oil company) reduced accidents by 84% by teaching roughnecks to cry. Listen to this podcast (or check it out in <a href="https://www.npr.org/sections/health-shots/2016/06/17/482203447/invisibilia-how-learning-to-be-vulnerable-can-make-life-safer">article form</a> to find out how. Can we apply this to SRE?</p>
<p><small>Alix Spiegel and Hanna Rosin — NPR&#8217;s Invisibilia</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://rootly.io/blog/google-s-state-of-devops-2021-report-what-sres-need-to-know" target="_blank">Google’s State of DevOps 2021 Report: What SREs Need to Know</a></div>
<div class="sreweekly-description">
<p>Don&#8217;t have time to read Google&#8217;s entire report? Here are the highlights.</p>
<p><small>Quentin Rousseau — Rootly</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://engineering.fb.com/2021/10/05/networking-traffic/outage-details/" target="_blank">More details about the October 4 outage</a></div>
<div class="sreweekly-description">
<p>I really like how open Facebook engineering has been about what went wrong on Monday. This article is an update on their <a href="https://engineering.fb.com/2021/10/04/networking-traffic/outage/">initial post</a>.</p>
<p><small>Santosh Janardhan — Facebook</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://jvns.ca/blog/2021/10/05/tools-to-look-at-bgp-routes/" target="_blank">Tools to explore BGP</a></div>
<div class="sreweekly-description">
<p>Want to learn about BGP? Ride along as Julia Evans learns. I especially like how she whipped out strace to figure out how traceroute was determining ASNs.</p>
<p><small>Julia Evans</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://www.verica.io/blog/announcing-the-void/" target="_blank">Announcing the VOID</a></div>
<div class="sreweekly-description">
<p>The Verica Open Incident Database is an exciting new project that seeks to create a catalog of public incident postings. Click through to check out the VOID and read the inaugural paper with initial findings. I&#8217;m really excited to see what this project brings!</p>
<p><small>Courtney Nash — Verica</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://rachelbythebay.com/w/2021/10/05/cmd/" target="_blank">&#8216;date -d&#8217; vs. &#8216;date -s&#8217;, and &#8216;show foo&#8217; vs. &#8216;clear foo&#8217;</a></div>
<div class="sreweekly-description">
<p>Printing versus setting a date — they&#8217;re only separated by a typo. Perhaps something similar happened with Facebook&#8217;s outage.</p>
<p><small>rachelbythebay</small></p>
</div>
</div>
<div class="sreweekly-entry">
<div class="sreweekly-title"><a href="https://bravenewgeek.com/sre-doesnt-scale/" target="_blank">SRE Doesn’t Scale</a></div>
<div class="sreweekly-description">
<p>Adopting a microservice architecture can strain your SRE. This article highlights an oft-missed section of the SRE book about scaling SRE.</p>
<p><small>Tyler Treat</small></p>
</div>
</div>
<h2>Outages</h2>
<ul class="sreweekly-outages">
<li><a href="https://arstechnica.com/information-technology/2021/10/facebook-instagram-whatsapp-and-oculus-are-down-heres-what-we-know/">Facebook, Instagram, WhatsApp, and Oculus</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">Well, that sure was a big one. Facebook and related services were totally down for 6+ hours — even their DNS servers.They also had <a href="https://bestgamingpro.com/facebook-instagram-and-whatsapp-go-down-for-some-in-second-outage-this-week/">another, smaller outage</a> later in the week.</li>
</ul>
</li>
<li><a href="https://status.slack.com//2021-10/55c1c102a575c9ba">Slack</a>
<ul class="sreweekly-outage">
<li class="sreweekly-outage">Not a real outage, but Slack reported that users were having a hard time connecting to Slack, because resolvers were overloaded by DNS lookups for facebook.com.</li>
</ul>
</li>
<li><a href="https://piunikaweb.com/2021/10/08/nordvpn-down-as-users-face-password-verification-failed-issue/">NordVPN</a></li>
<li><a href="https://piunikaweb.com/2021/10/08/paypal-down-not-working-or-unable-to-send-receive-money/">PayPal</a></li>
</ul>
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