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workshop.html
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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>reveal.js - The HTML Presentation Framework</title>
<meta name="description" content="A framework for easily creating beautiful presentations using HTML">
<meta name="author" content="Hakim El Hattab">
<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="reveal.js/css/reveal.min.css">
<link rel="stylesheet" href="reveal.js/css/theme/default.css" id="theme">
<!-- For syntax highlighting -->
<link rel="stylesheet" href="reveal.js/lib/css/zenburn.css">
<!-- If the query includes 'print-pdf', include the PDF print sheet -->
<script>
if( window.location.search.match( /print-pdf/gi ) ) {
var link = document.createElement( 'link' );
link.rel = 'stylesheet';
link.type = 'text/css';
link.href = 'css/print/pdf.css';
document.getElementsByTagName( 'head' )[0].appendChild( link );
}
</script>
<!--[if lt IE 9]>
<script src="lib/js/html5shiv.js"></script>
<![endif]-->
</head>
<body>
<div class="reveal">
<!-- Any section element inside of this container is displayed as a slide -->
<div class="slides">
<section>
<section>
<h1>ELK Workshop</h1>
</section>
<section>
<h2>What's wrong with our logs?</h2>
<ul>
<li>Logs spread across many files and servers</li>
<li>Incosistent/missing structure</li>
<li><i>grep</i> too slow and inconvinient</li>
<li>Hard to graph/count/analyze data</li>
<li>Can't do stream processing</li>
</ul>
</section>
<section>
<h2>Workshop goals</h2>
<ul>
<li>Collect logs from real world applications</li>
<li>Give the logs structure</li>
<li>Analyze the logs</li>
<li>Gain experience with ELK</li>
</ul>
</section>
<section>
<h2>What is ELk?</h2>
<ul>
<li class="fragment">Elasticsearch - Lucene based search server</li>
<li class="fragment">Logstash - Log pipeline and processor</li>
<li class="fragment">Kibana - Log analytics frontend for Elasticsearch</li>
</ul>
</section>
<section>
<h2>Prerequisites</h2>
<ul>
<li>Vagrant</li>
<li>VirtualBox</li>
<li>elk Vagrant box</li>
<li>Workshop git repository (https://github.com/nir0s/elk-workshop.git)</li>
</ul>
</section>
</section>
<section>
<section>
<h2>Simple log collection</h2>
<p>Collect logs from file and index in Elasticsearch for easy browsing</p>
<pre>
<code class="ruby" data-trim>
input {
file {
path => ["/var/log/apache/*.log"]
}
}
output {
elasticsearch {
embedded => true
}
}
</code>
</pre>
</section>
<section>
<h2>Parsing logs using grok</h2>
<pre>
<code class="ruby" data-trim>
filter {
grok {
match => ["message", "%{COMBINEDAPACHELOG}"]
}
}
</code>
</pre>
</section>
<section>
<h2>Basic Kibana usage</h2>
<ul>
<li>Search for logs</li>
<li>Filter by field</li>
<li>Zoom in/out</li>
</ul>
</section>
<section>
<h2>Advanced Kibana usage</h2>
<ul>
<li>Widgets</li>
<li>Saving/loading/sharing dashboards</li>
<li>Preparing dashboards for the big screen</li>
</ul>
</section>
<section>
<h2>Multi-line logs</h2>
<pre>
<code class="ruby">
filter {
multiline {
type => "catalina_out"
pattern => "^\s"
what => "previous"
}
}
</code>
</pre>
</section>
<section>
<h2>Codecs</h2>
<p>Codecs parse logs directly within an input plugin using a pre-defined format or serializer</p>
<pre>
<code class="ruby">
input {
file {
path => ["/path/to/file"]
codec => json
}
}
</code>
</pre>
</section>
<section>
<h2>Building a log pipeline using RabbitMQ</h2>
<p>RabbitMQ is an advanced message broker with queuing abilities. We can use it to build an elaborate log pipeline with ELK</p>
<pre>
<code class="ruby">
input {
rabbitmq {
host => "rabbitmq"
codec => "json"
exchange => "logs"
queue => "logstash-input"
}
}
</code>
</pre>
<pre>
<code class="ruby">
output {
rabbitmq {
host => "rabbitmq"
codec => "json"
exchange => "logs"
}
}
</code>
</pre>
</section>
<section>
<h2>Deduping logs</h2>
<p>We can dedup logs in Elasticsearch, removing duplicate log entries to save space and cleanup the logs</p>
<pre>
<code class="ruby">
filter {
fingerprint {
source => ["message"]
target => "fingerprint"
}
}
output {
elasticsearch {
document_id => "%{fingerprint}"
}
}
</code>
</pre>
</section>
<section>
<h2>Adding data to logs</h2>
<ul>
<li>translate filter</li>
<li>GeoIP filter</li>
</ul>
</section>
<section>
<h2>Counting events</h2>
<pre>
<code class="ruby">
filter {
metrics {
meter => ["messages"]
add_tag => "metric"
}
}
output {
if "metric" in ["tags"] {
graphite {
fields_are_metrics => true
include_metrics => "messages\.rate_[0-9]m"
metrics_format => "logstash.*"
}
}
}
</code>
</pre>
</section>
<section>
<h2>Output logs to additional places</h2>
<ul>
<li>files</li>
<li>Pub/sub</li>
<li>Hipchat, IRC</li>
<li>Nagios/Zabbix</li>
<li>statsd</li>
<li>Librato/datadog</li>
</ul>
</section>
</section>
<section>
<h1>Final word</h1>
<h3>What is a log really?</h3>
<h2 class="fragment">Any (timestamped?) event stream</h2>
</section>
<section>
<h1>Thanks for participating!</h1>
<h2>Where to go next</h2>
<ul>
<li><a href="http://logstash.net/docs/1.4.2/">Logstash docs</a></li>
<li><a href="http://www.logstashbook.com/">Logstash book</a></li>
</ul>
</section>
</div>
</div>
<script src="reveal.js/lib/js/head.min.js"></script>
<script src="reveal.js/js/reveal.min.js"></script>
<script>
// Full list of configuration options available here:
// https://github.com/hakimel/reveal.js#configuration
Reveal.initialize({
controls: true,
progress: true,
history: true,
center: true,
theme: Reveal.getQueryHash().theme, // available themes are in /css/theme
transition: Reveal.getQueryHash().transition || 'default', // default/cube/page/concave/zoom/linear/fade/none
// Parallax scrolling
// parallaxBackgroundImage: 'https://s3.amazonaws.com/hakim-static/reveal-js/reveal-parallax-1.jpg',
// parallaxBackgroundSize: '2100px 900px',
// Optional libraries used to extend on reveal.js
dependencies: [
{ src: 'reveal.js/lib/js/classList.js', condition: function() { return !document.body.classList; } },
{ src: 'reveal.js/plugin/markdown/marked.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'reveal.js/plugin/markdown/markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'reveal.js/plugin/highlight/highlight.js', async: true, callback: function() { hljs.initHighlightingOnLoad(); } },
{ src: 'reveal.js/plugin/zoom-js/zoom.js', async: true, condition: function() { return !!document.body.classList; } },
{ src: 'reveal.js/plugin/notes/notes.js', async: true, condition: function() { return !!document.body.classList; } }
]
});
</script>
</body>
</html>