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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Clustering Clinic</title>
<meta name="description" content="Clusterf*ck">
<meta name="author" content="Dani Traphagen Michael Perrone and Sebastian Estevez">
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<link rel="stylesheet" href="css/reveal.min.css">
<link rel="stylesheet" href="css/theme/default.css" id="theme">
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<link rel="stylesheet" href="lib/css/zenburn.css">
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if( window.location.search.match( /print-pdf/gi ) ) {
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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>
<h1>Clusterf*ck</h1>
<h3>The Clustering Clinc</h3>
<p>
<small>Presented by <a href="http://dtrapezoid.com">Dani Traphagen</a> / <a href="http://twitter.com/dtrapezoid">@dtrapezoid</a> Michael Perrone & Sebastian Estevez / <a href="http://twitter.com/syllogistic">@syllogistic</a></small>
</p>
</section>
<section>
<h2>Introduction</h2>
<p>
There were some serious issues with this cluster of pain. We rolled up our sleeves and got down to bidness, trouble shooting this hot mess.
</p>
<aside class="notes">
Oh hey, these are some notes. They'll be hidden in your presentation, but you can see them if you open the speaker notes window (hit 's' on your keyboard).
</aside>
</section>
<!-- Example of nested vertical slides -->
<section>
<section>
<h2>Arriving at AHA MOMENT #1</h2>
<p>
We 1st Viewed Opscenter and the cluster topology
<a href="#" class="navigate-down">next we...</a>
</p>
<a href="#" class="image navigate-down">
<img width="300" height="238" src="https://s3.amazonaws.com/hakim-static/reveal-js/arrow.png" alt="Down arrow">
</a>
</section>
<section>
<h2>Ran Jmeter</h2>
<p>
Just to check we could fire it up.
</p>
</section>
<section>
<h2>Cassandra.yaml</h2>
<p>
Seed nodes weren't set the same, but that wasn't it, because that only matters during bootstrapping.
</p>
<a class="test" href="https://wideworldofnovelwriting.files.wordpress.com/2011/01/redherring.jpg">
<img width="400" height="326" src="https://wideworldofnovelwriting.files.wordpress.com/2011/01/redherring.jpg" alt="Red Herring">
</a>
</section>
<section>
<h2>When in doubt, CHECK ALL THE FILES!</h2>
<p>
Checked Cassandra log and ran Cassandra in the foreground. AHA HUGEFILE is HUGE!
</p>
<a href="#/2" class="image">
<img width="200" height="238" src="http://2.bp.blogspot.com/-6DxX7OKwbD0/UH14y2XYIyI/AAAAAAAAAEM/jNLgCUc_DVQ/s1600/eureka.jpg" alt="lightbulb"
</a>
</section>
</section>
<section>
<h2>When we got the down node up:</h2>
<p>
Datacenter 2 only showed 6 of 8 agents so checked to see datastax agent was running (restarted in case it wasn't running). <a href="http://slid.es" target="_blank">http://slid.es</a>.
</p>
</section>
<section>
<h2>Check moar things!</h2>
<ul>
<li>Check DataStax agent log</li>
<li>Nodetool Status</li>
<li>Agent Config</li>
<li>Cassandra.yaml</li>
</ul>
</section>
<section>
<h2>Arriving at AHA MOMENT #1</h2>
<ul>
<li>The snitch is a lie</li>
<li>Was set as Ec2Snitch</li>
<li>Should have been Ec2MultiRegion</li>
</ul>
</section>
<section>
<h2>Our final solo AHA Moment #3</h2>
<ul>
<li>Heap size is a lie</li>
<li>All the heaps were commented out</li>
<li>Except for 2 which were different values</li>
</ul>
</section>
</section>
</div>
</div>
<script src="lib/js/head.min.js"></script>
<script src="js/reveal.min.js"></script>
<script>
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</body>
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