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operations_iwc_d3.html
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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Operational Excellence</title>
<meta name="description" content="A set of ideas around r-thinking and re-shaping operations">
<meta name="author" content="Martin Sumner">
<meta name="apple-mobile-web-app-capable" content="yes" />
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<!-- Code syntax highlighting -->
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</head>
<body>
<div class="reveal">
<!-- Any section element inside of this container is displayed as a slide -->
<div class="slides">
<section>
<h2>Operational Excellence - Day 3</h2>
</section>
<section>
<h2>Today we will cover ....</h2>
<p align="left">Day 2 Review</p>
<p align="left">Observability</p>
<p></p>
<p><small>http://martinsumner.github.io/presentations/operations_iwc_d3.html#/</small></p>
</section>
<section>
<h2>On The First Day ....</h2>
<p align="left">Parallels from Agile for Improvement</p>
<p align="left">Terminology is simplistic</p>
<p align="left">Needs are user-driven and evolving</p>
<p align="left">Measuring flow is important</p>
<p align="left">Adaptability to confusing and unexpected events</p>
<p align="left">Unavailability - process, organisation and bias</p>
<p align="left">Direct communication with users</p>
<p></p>
<p><small>http://martinsumner.github.io/presentations/operations_iwc_d1.html#/</small></p>
</section>
<section>
<h2>On The Second Day ....</h2>
<p align="left">Human behaviour and Organisation</p>
<p align="left">Confidence and Perception</p>
<p align="left">Service introduction</p>
<p align="left">Technical debt</p>
<p align="left">Feedback loops</p>
<p></p>
<p><small>http://martinsumner.github.io/presentations/operations_iwc_d2.html#/</small></p>
</section>
<section data-background="#A3C2FF">
<h2>Observability - the story so far</h2>
</section>
<section data-background="#A3C2FF">
<h2>Availability - monitoring from the perspective of the user</h2>
</section>
<section data-background="#A3C2FF">
<h2>Performance and Availability are intertwined</h2>
</section>
<section data-background="#A3C2FF">
<h2>Performance is not the inverse of capacity</h2>
</section>
<section data-background="#A3C2FF">
<h2>Context switching is bad</h2>
</section>
<section data-background="#A3C2FF">
<h2>Boredom isn't good either</h2>
</section>
<section data-background="#A3C2FF">
<h2>Observability should be embedded in the pre-live process</h2>
</section>
<section data-background="#A3C2FF">
<h2>Triage is a myth</h2>
</section>
<section data-background="#A3C2FF">
<h2>Monitoring is in itself an architecture problem</h2>
</section>
<section data-background="#A3C2FF">
<h2>Intermittent events need to be understood</h2>
</section>
<section data-background="#A3C2FF">
<h2>Some things fail silently</h2>
</section>
<section data-background="#A3C2FF">
<h2>Sometimes silence is the indicator of failure</h2>
</section>
<section data-background="#A3C2FF">
<h2>Monitoring can cause anchoring</h2>
</section>
<section>
<h2>Over to you ... three questions</h2>
<p align="left">Should we log the usernames of failed login attempts?</p>
<p align="left">Should operators be able to view security logs?</p>
<p align="left">Which is more sensitive - your demographic record, or the log of who has accessed it?</p>
</section>
<section data-background="#A3C2FF">
<h2>Slow at 9am, slower at 11am and unusable by 2pm</h2>
</section>
<section data-background="#A3C2FF">
<h2>Trends - what do we need to monitor?</h2>
<p align="left">CPUs are fast and plentiful</p>
<p align="left">Memory is available in abundance</p>
<p align="left">I/O have got much, much faster</p>
</section>
<section data-background="#A3C2FF">
<h2>Trends - what do we need to monitor?</h2>
<p align="left">Everything is distributed</p>
<p align="left">Speed of light is constant</p>
<p align="left">The cloud - latency and hidden drops</p>
<p align="left">Connection state machines everywhere</p>
<p align="left">Lots of weird rules - nagle, tcp timestamps, tcp incast</p>
<p align="left">Security is always being turned on - environments are untrusted</p>
</section>
<section data-background="#A3C2FF">
<h2>Some initial thoughts on dashboards</h2>
</section>
<section data-background="#A3C2FF">
<img width="800" height="600" data-src="images/ExplMoment.png" alt="Apollo's Explosive Moment" cite="https://www.amazon.co.uk/Behind-Human-Error-David-Woods/dp/0754678342">
</section>
<section data-background="#A3C2FF">
<img width="800" height="600" data-src="images/Expl4sAfter.png" alt="Apollo's Explosive Moment - 4s after" cite="https://www.amazon.co.uk/Behind-Human-Error-David-Woods/dp/0754678342">
</section>
<section data-background="#A3C2FF">
<img width="800" height="600" data-src="images/Expl4mAfter.png" alt="Apollo's Explosive Moment - 4m after" cite="https://www.amazon.co.uk/Behind-Human-Error-David-Woods/dp/0754678342">
</section>
<section>
<h2>Over to you ... design a monitoring dashboard</h2></section>
<section data-background="#A3C2FF">
<img width="800" height="500" data-src="images/MonitorBasicAverage.png">
</section>
<section data-background="#A3C2FF">
<img width="800" height="500" data-src="images/MonitorBasicAverageSite.png">
</section>
<section data-background="#A3C2FF">
<img width="800" height="500" data-src="images/MonitorDetailAverageSite.png">
</section>
<section data-background="#A3C2FF">
<img width="800" height="500" data-src="images/MonitorBasicAverageSiteHalf.png">
</section>
<section data-background="#A3C2FF">
<img width="800" height="500" data-src="images/MonitorAverageBreakdown.png">
</section>
<section data-background="#A3C2FF">
<img width="800" height="500" data-src="images/MonitorUserExperienceProportion.png">
</section>
<section data-background="#A3C2FF">
<img width="800" height="500" data-src="images/MonitorUserExperienceTransaction.png">
</section>
<section data-background="#A3C2FF">
<img width="800" height="500" data-src="images/AllClusterTransactionExperience.png">
</section>
<section data-background="#E5E37B">
<h2>Observability patterns</h2>
</section>
<section data-background="#E5E37B">
<h2>Monitor from the perspective of the user</h2>
</section>
<section data-background="#E5E37B">
<h2>Have artificial users as a control</h2>
</section>
<section data-background="#E5E37B">
<h2>Trace interactions through the system</h2>
</section>
<section data-background="#E5E37B">
<h2>Be able to flexibly divide - by stack, by stage, by site, by type</h2>
</section>
<section data-background="#E5E37B">
<h2>Use precise language</h2>
</section>
<section data-background="#E5E37B">
<h2>Monitor the whole and the parts - from one place</h2>
</section>
<section data-background="#E5E37B">
<h2>Place observability on the architecure agenda</h2>
</section>
<section data-background="#E5E37B">
<h2>Write and prioritise operator stories</h2>
</section>
<section data-background="#E5E37B">
<h2>If you must send alerts - send context too</h2>
</section>
<section data-background="#E5E37B">
<h2>Maps, traffic lights, gauges - time is a vital dimension</h2>
</section>
<section data-background="#E5E37B">
<h2>Be ready for deep inspection</h2>
</section>
<section data-background="#E5E37B">
<h2>Own the security policy</h2>
</section>
<section data-background="#E5E37B">
<h2>Architect things that are easy to monitor</h2>
</section>
<section data-background="#E5E37B">
<h2>Make events self-describing</h2>
</section>
<section data-background="#E5E37B">
<h2>Treat an absence of oddities as a shortfall in monitoring</h2>
</section>
<section data-background="#E5E37B">
<h2>Rehearse at every opportunity</h2>
</section>
<section>
<h2>On the final day</h2>
<p align="left">A review of broader patterns and anti-patterns</p>
<p align="left">Example service model in detail</p>
<p></p>
<p><small>http://martinsumner.github.io/presentations/operations_iwc_d4.html#/</small></p>
</section>
</div>
</div>
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