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Posted to commits@aurora.apache.org by jf...@apache.org on 2014/12/17 19:30:34 UTC
[09/18] incubator-aurora-website git commit: Initial move of website
over to git
http://git-wip-us.apache.org/repos/asf/incubator-aurora-website/blob/c43a3a2d/publish/documentation/latest/tutorial/index.html
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+<!DOCTYPE html>
+<html lang="en">
+ <head>
+ <meta charset="utf-8">
+ <meta name="viewport" content="width=device-width, initial-scale=1">
+ <title>Apache Aurora</title>
+ <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css">
+ <link href="/assets/css/main.css" rel="stylesheet">
+ <!-- Analytics -->
+ <script type="text/javascript">
+ var _gaq = _gaq || [];
+ _gaq.push(['_setAccount', 'UA-45879646-1']);
+ _gaq.push(['_setDomainName', 'apache.org']);
+ _gaq.push(['_trackPageview']);
+
+ (function() {
+ var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
+ ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
+ var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
+ })();
+ </script>
+ </head>
+ <body>
+
+ <div class="container-fluid section-header">
+ <div class="container">
+ <div class="nav nav-bar">
+ <a href="/"><img src="/assets/img/aurora_logo_white_bkg.svg" width="300" alt="Transparent Apache Aurora logo with dark background"/></a>
+ <ul class="nav navbar-nav navbar-right">
+ <li><a href="/documentation/latest/">Documentation</a></li>
+ <li><a href="/community/">Community</a></li>
+ <li><a href="/downloads/">Downloads</a></li>
+ <li><a href="/blog/">Blog</a></li>
+ </ul>
+ </div>
+ </div>
+</div>
+ <div class="container-fluid">
+ <div class="container content">
+ <h2 id="aurora-tutorial">Aurora Tutorial</h2>
+
+<ul>
+<li><a href="#introduction">Introduction</a></li>
+<li><a href="#setup-install-aurora">Setup: Install Aurora</a></li>
+<li><a href="#the-script">The Script</a></li>
+<li><a href="#aurora-configuration">Aurora Configuration</a></li>
+<li><a href="#whats-going-on-in-that-configuration-file">What’s Going On In That Configuration File?</a></li>
+<li><a href="#creating-the-job">Creating the Job</a></li>
+<li><a href="#watching-the-job-run">Watching the Job Run</a></li>
+<li><a href="#cleanup">Cleanup</a></li>
+<li><a href="#next-steps">Next Steps</a></li>
+</ul>
+
+<h2 id="introduction">Introduction</h2>
+
+<p>This tutorial shows how to use the Aurora scheduler to run (and
+“<code>printf-debug</code>”) a hello world program on Mesos. The operational
+hierarchy is:</p>
+
+<ul>
+<li>Aurora manages and schedules jobs for Mesos to run.</li>
+<li>Mesos manages the individual tasks that make up a job.</li>
+<li>Thermos manages the individual processes that make up a task.</li>
+</ul>
+
+<p>This is the recommended first Aurora users document to read to start
+getting up to speed on the system.</p>
+
+<p>To get help, email questions to the Aurora Developer List,
+<a href="mailto:dev@aurora.incubator.apache.org">dev@aurora.incubator.apache.org</a></p>
+
+<h2 id="setup:-install-aurora">Setup: Install Aurora</h2>
+
+<p>You use the Aurora client and web UI to interact with Aurora jobs. To
+install it locally, see <a href="/documentation/latest/vagrant/">vagrant.md</a>. The remainder of this
+Tutorial assumes you are running Aurora using Vagrant. Unless otherwise stated,
+all commands are to be run from the root of the aurora repository clone.</p>
+
+<h2 id="the-script">The Script</h2>
+
+<p>Our “hello world” application is a simple Python script that loops
+forever, displaying the time every few seconds. Copy the code below and
+put it in a file named <code>hello_world.py</code> in the root of your Aurora repository clone (Note:
+this directory is the same as <code>/vagrant</code> inside the Vagrant VMs).</p>
+
+<p>The script has an intentional bug, which we will explain later on.</p>
+
+<!-- NOTE: If you are changing this file, be sure to also update examples/vagrant/test_tutorial.sh.
+-->
+<pre class="highlight python"><span class="kn">import</span> <span class="nn">sys</span>
+<span class="kn">import</span> <span class="nn">time</span>
+
+<span class="k">def</span> <span class="nf">main</span><span class="p">(</span><span class="n">argv</span><span class="p">):</span>
+ <span class="n">SLEEP_DELAY</span> <span class="o">=</span> <span class="mi">10</span>
+ <span class="c"># Python ninjas - ignore this blatant bug.</span>
+ <span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="n">xrang</span><span class="p">(</span><span class="mi">100</span><span class="p">):</span>
+ <span class="k">print</span><span class="p">(</span><span class="s">"Hello world! The time is now: </span><span class="si">%</span><span class="s">s. Sleeping for </span><span class="si">%</span><span class="s">d secs"</span> <span class="o">%</span> <span class="p">(</span>
+ <span class="n">time</span><span class="o">.</span><span class="n">asctime</span><span class="p">(),</span> <span class="n">SLEEP_DELAY</span><span class="p">))</span>
+ <span class="n">sys</span><span class="o">.</span><span class="n">stdout</span><span class="o">.</span><span class="n">flush</span><span class="p">()</span>
+ <span class="n">time</span><span class="o">.</span><span class="n">sleep</span><span class="p">(</span><span class="n">SLEEP_DELAY</span><span class="p">)</span>
+
+<span class="k">if</span> <span class="n">__name__</span> <span class="o">==</span> <span class="s">"__main__"</span><span class="p">:</span>
+ <span class="n">main</span><span class="p">(</span><span class="n">sys</span><span class="o">.</span><span class="n">argv</span><span class="p">)</span>
+</pre>
+<h2 id="aurora-configuration">Aurora Configuration</h2>
+
+<p>Once we have our script/program, we need to create a <em>configuration
+file</em> that tells Aurora how to manage and launch our Job. Save the below
+code in the file <code>hello_world.aurora</code>.</p>
+
+<!-- NOTE: If you are changing this file, be sure to also update examples/vagrant/test_tutorial.sh.
+-->
+<pre class="highlight python"><span class="n">pkg_path</span> <span class="o">=</span> <span class="s">'/vagrant/hello_world.py'</span>
+
+<span class="c"># we use a trick here to make the configuration change with</span>
+<span class="c"># the contents of the file, for simplicity. in a normal setting, packages would be</span>
+<span class="c"># versioned, and the version number would be changed in the configuration.</span>
+<span class="kn">import</span> <span class="nn">hashlib</span>
+<span class="k">with</span> <span class="nb">open</span><span class="p">(</span><span class="n">pkg_path</span><span class="p">,</span> <span class="s">'rb'</span><span class="p">)</span> <span class="k">as</span> <span class="n">f</span><span class="p">:</span>
+ <span class="n">pkg_checksum</span> <span class="o">=</span> <span class="nb">hash</span><span class="n">lib</span><span class="o">.</span><span class="n">md5</span><span class="p">(</span><span class="n">f</span><span class="o">.</span><span class="n">read</span><span class="p">())</span><span class="o">.</span><span class="nb">hex</span><span class="n">digest</span><span class="p">()</span>
+
+<span class="c"># copy hello_world.py into the local sandbox</span>
+<span class="n">install</span> <span class="o">=</span> <span class="n">Process</span><span class="p">(</span>
+ <span class="n">name</span> <span class="o">=</span> <span class="s">'fetch_package'</span><span class="p">,</span>
+ <span class="n">cmdline</span> <span class="o">=</span> <span class="s">'cp </span><span class="si">%</span><span class="s">s . && echo </span><span class="si">%</span><span class="s">s && chmod +x hello_world.py'</span> <span class="o">%</span> <span class="p">(</span><span class="n">pkg_path</span><span class="p">,</span> <span class="n">pkg_checksum</span><span class="p">))</span>
+
+<span class="c"># run the script</span>
+<span class="n">hello_world</span> <span class="o">=</span> <span class="n">Process</span><span class="p">(</span>
+ <span class="n">name</span> <span class="o">=</span> <span class="s">'hello_world'</span><span class="p">,</span>
+ <span class="n">cmdline</span> <span class="o">=</span> <span class="s">'python hello_world.py'</span><span class="p">)</span>
+
+<span class="c"># describe the task</span>
+<span class="n">hello_world_task</span> <span class="o">=</span> <span class="n">SequentialTask</span><span class="p">(</span>
+ <span class="n">processes</span> <span class="o">=</span> <span class="p">[</span><span class="n">install</span><span class="p">,</span> <span class="n">hello_world</span><span class="p">],</span>
+ <span class="n">resources</span> <span class="o">=</span> <span class="n">Resources</span><span class="p">(</span><span class="n">cpu</span> <span class="o">=</span> <span class="mi">1</span><span class="p">,</span> <span class="n">ram</span> <span class="o">=</span> <span class="mi">1</span><span class="o">*</span><span class="n">MB</span><span class="p">,</span> <span class="n">disk</span><span class="o">=</span><span class="mi">8</span><span class="o">*</span><span class="n">MB</span><span class="p">))</span>
+
+<span class="n">jobs</span> <span class="o">=</span> <span class="p">[</span>
+ <span class="n">Service</span><span class="p">(</span><span class="n">cluster</span> <span class="o">=</span> <span class="s">'devcluster'</span><span class="p">,</span>
+ <span class="n">environment</span> <span class="o">=</span> <span class="s">'devel'</span><span class="p">,</span>
+ <span class="n">role</span> <span class="o">=</span> <span class="s">'www-data'</span><span class="p">,</span>
+ <span class="n">name</span> <span class="o">=</span> <span class="s">'hello_world'</span><span class="p">,</span>
+ <span class="n">task</span> <span class="o">=</span> <span class="n">hello_world_task</span><span class="p">)</span>
+<span class="p">]</span>
+</pre>
+<p>For more about Aurora configuration files, see the <a href="/documentation/latest/configuration-tutorial/">Configuration
+Tutorial</a> and the <a href="/documentation/latest/configuration-reference/">Aurora + Thermos
+Reference</a> (preferably after finishing this
+tutorial).</p>
+
+<h2 id="what's-going-on-in-that-configuration-file?">What’s Going On In That Configuration File?</h2>
+
+<p>More than you might think.</p>
+
+<ol>
+<li><p>From a “big picture” viewpoint, it first defines two
+Processes. Then it defines a Task that runs the two Processes in the
+order specified in the Task definition, as well as specifying what
+computational and memory resources are available for them. Finally,
+it defines a Job that will schedule the Task on available and suitable
+machines. This Job is the sole member of a list of Jobs; you can
+specify more than one Job in a config file.</p></li>
+<li><p>At the Process level, it specifies how to get your code into the
+local sandbox in which it will run. It then specifies how the code is
+actually run once the second Process starts.</p></li>
+</ol>
+
+<h2 id="creating-the-job">Creating the Job</h2>
+
+<p>We’re ready to launch our job! To do so, we use the Aurora Client to
+issue a Job creation request to the Aurora scheduler.</p>
+
+<p>Many Aurora Client commands take a <em>job key</em> argument, which uniquely
+identifies a Job. A job key consists of four parts, each separated by a
+“/”. The four parts are <code><cluster>/<role>/<environment>/<jobname></code>
+in that order. When comparing two job keys, if any of the
+four parts is different from its counterpart in the other key, then the
+two job keys identify two separate jobs. If all four values are
+identical, the job keys identify the same job.</p>
+
+<p><code>/etc/aurora/clusters.json</code> within the Aurora scheduler has the available
+cluster names. For Vagrant, from the top-level of your Aurora repository clone,
+do:</p>
+<pre class="highlight text">$ vagrant ssh
+</pre>
+<p>Followed by:</p>
+<pre class="highlight text">vagrant@precise64:~$ cat /etc/aurora/clusters.json
+</pre>
+<p>You’ll see something like:</p>
+<pre class="highlight javascript"><span class="p">[{</span>
+ <span class="s2">"name"</span><span class="err">:</span> <span class="s2">"devcluster"</span><span class="p">,</span>
+ <span class="s2">"zk"</span><span class="err">:</span> <span class="s2">"192.168.33.7"</span><span class="p">,</span>
+ <span class="s2">"scheduler_zk_path"</span><span class="err">:</span> <span class="s2">"/aurora/scheduler"</span><span class="p">,</span>
+ <span class="s2">"auth_mechanism"</span><span class="err">:</span> <span class="s2">"UNAUTHENTICATED"</span>
+<span class="p">}]</span>
+</pre>
+<p>Use a <code>name</code> value for your job key’s cluster value.</p>
+
+<p>Role names are user accounts existing on the slave machines. If you don’t know what accounts
+are available, contact your sysadmin.</p>
+
+<p>Environment names are namespaces; you can count on <code>prod</code>, <code>devel</code> and <code>test</code> existing.</p>
+
+<p>The Aurora Client command that actually runs our Job is <code>aurora create</code>. It creates a Job as
+specified by its job key and configuration file arguments and runs it.</p>
+<pre class="highlight text">aurora create <cluster>/<role>/<environment>/<jobname> <config_file>
+</pre>
+<p>Or for our example:</p>
+<pre class="highlight text">aurora create devcluster/www-data/devel/hello_world /vagrant/hello_world.aurora
+</pre>
+<p>This returns:</p>
+<pre class="highlight text">$ vagrant ssh
+Welcome to Ubuntu 12.04 LTS (GNU/Linux 3.2.0-23-generic x86_64)
+
+ * Documentation: https://help.ubuntu.com/
+Welcome to your Vagrant-built virtual machine.
+Last login: Fri Jan 3 02:18:55 2014 from 10.0.2.2
+vagrant@precise64:~$ aurora create devcluster/www-data/devel/hello_world \
+ /vagrant/hello_world.aurora
+ INFO] Creating job hello_world
+ INFO] Response from scheduler: OK (message: 1 new tasks pending for job
+ www-data/devel/hello_world)
+ INFO] Job url: http://precise64:8081/scheduler/www-data/devel/hello_world
+</pre>
+<h2 id="watching-the-job-run">Watching the Job Run</h2>
+
+<p>Now that our job is running, let’s see what it’s doing. Access the
+scheduler web interface at <code>http://$scheduler_hostname:$scheduler_port/scheduler</code>
+Or when using <code>vagrant</code>, <code>http://192.168.33.7:8081/scheduler</code>
+First we see what Jobs are scheduled:</p>
+
+<p><img alt="Scheduled Jobs" src="../images/ScheduledJobs.png" /></p>
+
+<p>Click on your user name, which in this case was <code>www-data</code>, and we see the Jobs associated
+with that role:</p>
+
+<p><img alt="Role Jobs" src="../images/RoleJobs.png" /></p>
+
+<p>If you click on your <code>hello_world</code> Job, you’ll see:</p>
+
+<p><img alt="hello_world Job" src="../images/HelloWorldJob.png" /></p>
+
+<p>Oops, looks like our first job didn’t quite work! The task failed, so we have
+to figure out what went wrong.</p>
+
+<p>Access the page for our Task by clicking on its host.</p>
+
+<p><img alt="Task page" src="../images/TaskBreakdown.png" /></p>
+
+<p>Once there, we see that the
+<code>hello_world</code> process failed. The Task page captures the standard error and
+standard output streams and makes them available. Clicking through
+to <code>stderr</code> on the failed <code>hello_world</code> process, we see what happened.</p>
+
+<p><img alt="stderr page" src="../images/stderr.png" /></p>
+
+<p>It looks like we made a typo in our Python script. We wanted <code>xrange</code>,
+not <code>xrang</code>. Edit the <code>hello_world.py</code> script to use the correct function and
+we will try again.</p>
+<pre class="highlight text">aurora update devcluster/www-data/devel/hello_world /vagrant/hello_world.aurora
+</pre>
+<p>This time, the task comes up, we inspect the page, and see that the
+<code>hello_world</code> process is running.</p>
+
+<p><img alt="Running Task page" src="../images/runningtask.png" /></p>
+
+<p>We then inspect the output by clicking on <code>stdout</code> and see our process'
+output:</p>
+
+<p><img alt="stdout page" src="../images/stdout.png" /></p>
+
+<h2 id="cleanup">Cleanup</h2>
+
+<p>Now that we’re done, we kill the job using the Aurora client:</p>
+<pre class="highlight text">vagrant@precise64:~$ aurora killall devcluster/www-data/devel/hello_world
+ INFO] Killing tasks for job: devcluster/www-data/devel/hello_world
+ INFO] Response from scheduler: OK (message: Tasks killed.)
+ INFO] Job url: http://precise64:8081/scheduler/www-data/devel/hello_world
+vagrant@precise64:~$
+</pre>
+<p>The job page now shows the <code>hello_world</code> tasks as completed.</p>
+
+<p><img alt="Killed Task page" src="../images/killedtask.png" /></p>
+
+<h2 id="next-steps">Next Steps</h2>
+
+<p>Now that you’ve finished this Tutorial, you should read or do the following:</p>
+
+<ul>
+<li><a href="/documentation/latest/configuration-tutorial/">The Aurora Configuration Tutorial</a>, which provides more examples
+and best practices for writing Aurora configurations. You should also look at
+the <a href="/documentation/latest/configuration-reference/">Aurora + Thermos Configuration Reference</a>.</li>
+<li>The <a href="/documentation/latest/user-guide/">Aurora User Guide</a> provides an overview of how Aurora, Mesos, and
+Thermos work “under the hood”.</li>
+<li>Explore the Aurora Client - use the <code>aurora help</code> subcommand, and read the
+<a href="/documentation/latest/client-commands/">Aurora Client Commands</a> document.</li>
+</ul>
+
+ </div>
+ </div>
+
+ <div class="container-fluid section-footer buffer">
+ <div class="container">
+ <div class="row">
+ <div class="col-md-2 col-md-offset-1"><h3>Quick Links</h3>
+ <ul>
+ <li><a href="/downloads/">Downloads</a></li>
+ <li><a href="/community/">Mailing Lists</a></li>
+ <li><a href="http://issues.apache.org/jira/browse/AURORA">Issue Tracking</a></li>
+ <li><a href="/documentation/latest/contributing/">How To Contribute</a></li>
+ </ul>
+ </div>
+ <div class="col-md-2"><h3>The ASF</h3>
+ <ul>
+ <li><a href="http://www.apache.org/licenses/">License</a></li>
+ <li><a href="http://www.apache.org/foundation/sponsorship.html">Sponsorship</a></li>
+ <li><a href="http://www.apache.org/foundation/thanks.html">Thanks</a></li>
+ <li><a href="http://www.apache.org/security/">Security</a></li>
+ </ul>
+ </div>
+ <div class="col-md-6">
+ <p class="disclaimer">Apache Aurora is an effort undergoing incubation at The Apache Software Foundation (ASF), sponsored by the Apache Incubator. Incubation is required of all newly accepted projects until a further review indicates that the infrastructure, communications, and decision making process have stabilized in a manner consistent with other successful ASF projects. While incubation status is not necessarily a reflection of the completeness or stability of the code, it does indicate that the project has yet to be fully endorsed by the ASF.</p>
+ <p class="disclaimer">Copyright 2014 <a href="http://www.apache.org/">Apache Software Foundation</a>. Licensed under the <a href="http://www.apache.org/licenses/">Apache License v2.0</a>. The <a href="https://www.flickr.com/photos/trondk/12706051375/">Aurora Borealis IX photo</a> displayed on the homepage is available under a <a href="https://creativecommons.org/licenses/by-nc-nd/2.0/">Creative Commons BY-NC-ND 2.0 license</a>. Apache, Apache Aurora, and the Apache feather logo are trademarks of The Apache Software Foundation.</p>
+ </div>
+ </div>
+ </div>
+ </body>
+</html>
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/incubator-aurora-website/blob/c43a3a2d/publish/documentation/latest/user-guide/index.html
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diff --git a/publish/documentation/latest/user-guide/index.html b/publish/documentation/latest/user-guide/index.html
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+<!DOCTYPE html>
+<html lang="en">
+ <head>
+ <meta charset="utf-8">
+ <meta name="viewport" content="width=device-width, initial-scale=1">
+ <title>Apache Aurora</title>
+ <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css">
+ <link href="/assets/css/main.css" rel="stylesheet">
+ <!-- Analytics -->
+ <script type="text/javascript">
+ var _gaq = _gaq || [];
+ _gaq.push(['_setAccount', 'UA-45879646-1']);
+ _gaq.push(['_setDomainName', 'apache.org']);
+ _gaq.push(['_trackPageview']);
+
+ (function() {
+ var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
+ ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
+ var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
+ })();
+ </script>
+ </head>
+ <body>
+
+ <div class="container-fluid section-header">
+ <div class="container">
+ <div class="nav nav-bar">
+ <a href="/"><img src="/assets/img/aurora_logo_white_bkg.svg" width="300" alt="Transparent Apache Aurora logo with dark background"/></a>
+ <ul class="nav navbar-nav navbar-right">
+ <li><a href="/documentation/latest/">Documentation</a></li>
+ <li><a href="/community/">Community</a></li>
+ <li><a href="/downloads/">Downloads</a></li>
+ <li><a href="/blog/">Blog</a></li>
+ </ul>
+ </div>
+ </div>
+</div>
+ <div class="container-fluid">
+ <div class="container content">
+ <h2 id="aurora-user-guide">Aurora User Guide</h2>
+
+<ul>
+<li><a href="#user-content-overview">Overview</a></li>
+<li><a href="#user-content-job-lifecycle">Job Lifecycle</a>
+
+<ul>
+<li><a href="#user-content-life-of-a-task">Life Of A Task</a></li>
+<li><a href="#user-content-pending-to-running-states">PENDING to RUNNING states</a></li>
+<li><a href="#user-content-task-updates">Task Updates</a></li>
+<li><a href="#user-content-http-health-checking-and-graceful-shutdown">HTTP Health Checking and Graceful Shutdown</a>
+
+<ul>
+<li><a href="#user-content-tearing-a-task-down">Tearing a task down</a></li>
+</ul></li>
+<li><a href="#user-content-giving-priority-to-production-tasks-preempting">Giving Priority to Production Tasks: PREEMPTING</a></li>
+<li><a href="#user-content-natural-termination-finished-failed">Natural Termination: FINISHED, FAILED</a></li>
+<li><a href="#user-content-forceful-termination-killing-restarting">Forceful Termination: KILLING, RESTARTING</a></li>
+</ul></li>
+<li><a href="#user-content-service-discovery">Service Discovery</a></li>
+<li><a href="#user-content-configuration">Configuration</a></li>
+<li><a href="#user-content-creating-jobs">Creating Jobs</a></li>
+<li><a href="#user-content-interacting-with-jobs">Interacting With Jobs</a></li>
+</ul>
+
+<h2 id="overview">Overview</h2>
+
+<p>This document gives an overview of how Aurora works under the hood.
+It assumes you’ve already worked through the “hello world” example
+job in the <a href="/documentation/latest/tutorial/">Aurora Tutorial</a>. Specifics of how to use Aurora are <strong>not</strong>
+ given here, but pointers to documentation about how to use Aurora are
+provided.</p>
+
+<p>Aurora is a Mesos framework used to schedule <em>jobs</em> onto Mesos. Mesos
+cares about individual <em>tasks</em>, but typical jobs consist of dozens or
+hundreds of task replicas. Aurora provides a layer on top of Mesos with
+its <code>Job</code> abstraction. An Aurora <code>Job</code> consists of a task template and
+instructions for creating near-identical replicas of that task (modulo
+things like “instance id” or specific port numbers which may differ from
+machine to machine).</p>
+
+<p>How many tasks make up a Job is complicated. On a basic level, a Job consists of
+one task template and instructions for creating near-idential replicas of that task
+(otherwise referred to as “instances” or “shards”).</p>
+
+<p>However, since Jobs can be updated on the fly, a single Job identifier or <em>job key</em>
+can have multiple job configurations associated with it.</p>
+
+<p>For example, consider when I have a Job with 4 instances that each
+request 1 core of cpu, 1 GB of RAM, and 1 GB of disk space as specified
+in the configuration file <code>hello_world.aurora</code>. I want to
+update it so it requests 2 GB of RAM instead of 1. I create a new
+configuration file to do that called <code>new_hello_world.aurora</code> and
+issue a <code>aurora update --shards=0-1 <job_key_value> new_hello_world.aurora</code>
+command.</p>
+
+<p>This results in instances 0 and 1 having 1 cpu, 2 GB of RAM, and 1 GB of disk space,
+while instances 2 and 3 have 1 cpu, 1 GB of RAM, and 1 GB of disk space. If instance 3
+dies and restarts, it restarts with 1 cpu, 1 GB RAM, and 1 GB disk space.</p>
+
+<p>So that means there are two simultaneous task configurations for the same Job
+at the same time, just valid for different ranges of instances.</p>
+
+<p>This isn’t a recommended pattern, but it is valid and supported by the
+Aurora scheduler. This most often manifests in the “canary pattern” where
+instance 0 runs with a different configuration than instances 1-N to test
+different code versions alongside the actual production job.</p>
+
+<p>A task can merely be a single <em>process</em> corresponding to a single
+command line, such as <code>python2.6 my_script.py</code>. However, a task can also
+consist of many separate processes, which all run within a single
+sandbox. For example, running multiple cooperating agents together,
+such as <code>logrotate</code>, <code>installer</code>, master, or slave processes. This is
+where Thermos comes in. While Aurora provides a <code>Job</code> abstraction on
+top of Mesos <code>Tasks</code>, Thermos provides a <code>Process</code> abstraction
+underneath Mesos <code>Task</code>s and serves as part of the Aurora framework’s
+executor.</p>
+
+<p>You define <code>Job</code>s,<code>Task</code>s, and <code>Process</code>es in a configuration file.
+Configuration files are written in Python, and make use of the Pystachio
+templating language. They end in a <code>.aurora</code> extension.</p>
+
+<p>Pystachio is a type-checked dictionary templating library.</p>
+
+<blockquote>
+<p>TL;DR</p>
+
+<ul>
+<li> Aurora manages jobs made of tasks.</li>
+<li> Mesos manages tasks made of processes.</li>
+<li> Thermos manages processes.</li>
+<li> All defined in <code>.aurora</code> configuration file.</li>
+</ul>
+</blockquote>
+
+<p><img alt="Aurora hierarchy" src="../images/aurora_hierarchy.png" /></p>
+
+<p>Each <code>Task</code> has a <em>sandbox</em> created when the <code>Task</code> starts and garbage
+collected when it finishes. All of a <code>Task'</code>s processes run in its
+sandbox, so processes can share state by using a shared current working
+directory.</p>
+
+<p>The sandbox garbage collection policy considers many factors, most
+importantly age and size. It makes a best-effort attempt to keep
+sandboxes around as long as possible post-task in order for service
+owners to inspect data and logs, should the <code>Task</code> have completed
+abnormally. But you can’t design your applications assuming sandboxes
+will be around forever, e.g. by building log saving or other
+checkpointing mechanisms directly into your application or into your
+<code>Job</code> description.</p>
+
+<h2 id="job-lifecycle">Job Lifecycle</h2>
+
+<p>When Aurora reads a configuration file and finds a <code>Job</code> definition, it:</p>
+
+<ol>
+<li> Evaluates the <code>Job</code> definition.</li>
+<li> Splits the <code>Job</code> into its constituent <code>Task</code>s.</li>
+<li> Sends those <code>Task</code>s to the scheduler.</li>
+<li> The scheduler puts the <code>Task</code>s into <code>PENDING</code> state, starting each
+<code>Task</code>’s life cycle.</li>
+</ol>
+
+<h3 id="life-of-a-task">Life Of A Task</h3>
+
+<p><img alt="Life of a task" src="../images/lifeofatask.png" /></p>
+
+<h3 id="pending-to-running-states">PENDING to RUNNING states</h3>
+
+<p>When a <code>Task</code> is in the <code>PENDING</code> state, the scheduler constantly
+searches for machines satisfying that <code>Task</code>’s resource request
+requirements (RAM, disk space, CPU time) while maintaining configuration
+constraints such as “a <code>Task</code> must run on machines dedicated to a
+particular role” or attribute limit constraints such as “at most 2
+<code>Task</code>s from the same <code>Job</code> may run on each rack”. When the scheduler
+finds a suitable match, it assigns the <code>Task</code> to a machine and puts the
+<code>Task</code> into the <code>ASSIGNED</code> state.</p>
+
+<p>From the <code>ASSIGNED</code> state, the scheduler sends an RPC to the slave
+machine containing <code>Task</code> configuration, which the slave uses to spawn
+an executor responsible for the <code>Task</code>’s lifecycle. When the scheduler
+receives an acknowledgement that the machine has accepted the <code>Task</code>,
+the <code>Task</code> goes into <code>STARTING</code> state.</p>
+
+<p><code>STARTING</code> state initializes a <code>Task</code> sandbox. When the sandbox is fully
+initialized, Thermos begins to invoke <code>Process</code>es. Also, the slave
+machine sends an update to the scheduler that the <code>Task</code> is
+in <code>RUNNING</code> state.</p>
+
+<p>If a <code>Task</code> stays in <code>ASSIGNED</code> or <code>STARTING</code> for too long, the
+scheduler forces it into <code>LOST</code> state, creating a new <code>Task</code> in its
+place that’s sent into <code>PENDING</code> state. This is technically true of any
+active state: if the Mesos core tells the scheduler that a slave has
+become unhealthy (or outright disappeared), the <code>Task</code>s assigned to that
+slave go into <code>LOST</code> state and new <code>Task</code>s are created in their place.
+From <code>PENDING</code> state, there is no guarantee a <code>Task</code> will be reassigned
+to the same machine unless job constraints explicitly force it there.</p>
+
+<p>If there is a state mismatch, (e.g. a machine returns from a <code>netsplit</code>
+and the scheduler has marked all its <code>Task</code>s <code>LOST</code> and rescheduled
+them), a state reconciliation process kills the errant <code>RUNNING</code> tasks,
+which may take up to an hour. But to emphasize this point: there is no
+uniqueness guarantee for a single instance of a job in the presence of
+network partitions. If the Task requires that, it should be baked in at
+the application level using a distributed coordination service such as
+Zookeeper.</p>
+
+<h3 id="task-updates">Task Updates</h3>
+
+<p><code>Job</code> configurations can be updated at any point in their lifecycle.
+Usually updates are done incrementally using a process called a <em>rolling
+upgrade</em>, in which Tasks are upgraded in small groups, one group at a
+time. Updates are done using various Aurora Client commands.</p>
+
+<p>For a configuration update, the Aurora Client calculates required changes
+by examining the current job config state and the new desired job config.
+It then starts a rolling batched update process by going through every batch
+and performing these operations:</p>
+
+<ul>
+<li>If an instance is present in the scheduler but isn’t in the new config,
+then that instance is killed.</li>
+<li>If an instance is not present in the scheduler but is present in
+the new config, then the instance is created.</li>
+<li>If an instance is present in both the scheduler the new config, then
+the client diffs both task configs. If it detects any changes, it
+performs an instance update by killing the old config instance and adds
+the new config instance.</li>
+</ul>
+
+<p>The Aurora client continues through the instance list until all tasks are
+updated, in <code>RUNNING,</code> and healthy for a configurable amount of time.
+If the client determines the update is not going well (a percentage of health
+checks have failed), it cancels the update.</p>
+
+<p>Update cancellation runs a procedure similar to the described above
+update sequence, but in reverse order. New instance configs are swapped
+with old instance configs and batch updates proceed backwards
+from the point where the update failed. E.g.; (0,1,2) (3,4,5) (6,7,
+8-FAIL) results in a rollback in order (8,7,6) (5,4,3) (2,1,0).</p>
+
+<h3 id="http-health-checking-and-graceful-shutdown">HTTP Health Checking and Graceful Shutdown</h3>
+
+<p>The Executor implements a protocol for rudimentary control of a task via HTTP. Tasks subscribe for
+this protocol by declaring a port named <code>health</code>. Take for example this configuration snippet:</p>
+<pre class="highlight text">nginx = Process(
+ name = 'nginx',
+ cmdline = './run_nginx.sh -port {{thermos.ports[http]}}')
+</pre>
+<p>When this Process is included in a job, the job will be allocated a port, and the command line
+will be replaced with something like:</p>
+<pre class="highlight text">./run_nginx.sh -port 42816
+</pre>
+<p>Where 42816 happens to be the allocated. port. Typically, the Executor monitors Processes within
+a task only by liveness of the forked process. However, when a <code>health</code> port was allocated, it will
+also send periodic HTTP health checks. A task requesting a <code>health</code> port must handle the following
+requests:</p>
+
+<table><thead>
+<tr>
+<th>HTTP request</th>
+<th>Description</th>
+</tr>
+</thead><tbody>
+<tr>
+<td><code>GET /health</code></td>
+<td>Inquires whether the task is healthy.</td>
+</tr>
+<tr>
+<td><code>POST /quitquitquit</code></td>
+<td>Task should initiate graceful shutdown.</td>
+</tr>
+<tr>
+<td><code>POST /abortabortabort</code></td>
+<td>Final warning task is being killed.</td>
+</tr>
+</tbody></table>
+
+<p>Please see the
+<a href="configuration-reference.md#user-content-healthcheckconfig-objects">configuration reference</a> for
+configuration options for this feature.</p>
+
+<h4 id="snoozing-health-checks">Snoozing Health Checks</h4>
+
+<p>If you need to pause your health check, you can do so by touching a file inside of your sandbox,
+named <code>.healthchecksnooze</code></p>
+
+<p>As long as that file is present, health checks will be disabled, enabling users to gather core dumps
+or other performance measurements without worrying about Aurora’s health check killing their
+process.</p>
+
+<p>WARNING: Remember to remove this when you are done, otherwise your instance will have permanently
+disabled health checks.</p>
+
+<h4 id="tearing-a-task-down">Tearing a task down</h4>
+
+<p>The Executor follows an escalation sequence when killing a running task:</p>
+
+<ol>
+<li>If <code>health</code> port is not present, skip to (5)</li>
+<li>POST /quitquitquit</li>
+<li>wait 5 seconds</li>
+<li>POST /abortabortabort</li>
+<li>Send SIGTERM (<code>kill</code>)</li>
+<li>Send SIGKILL (<code>kill -9</code>)</li>
+</ol>
+
+<p>If the Executor notices that all Processes in a Task have aborted during this sequence, it will
+not proceed with subsequent steps. Note that graceful shutdown is best-effort, and due to the many
+inevitable realities of distributed systems, it may not be performed.</p>
+
+<h3 id="giving-priority-to-production-tasks:-preempting">Giving Priority to Production Tasks: PREEMPTING</h3>
+
+<p>Sometimes a Task needs to be interrupted, such as when a non-production
+Task’s resources are needed by a higher priority production Task. This
+type of interruption is called a <em>pre-emption</em>. When this happens in
+Aurora, the non-production Task is killed and moved into
+the <code>PREEMPTING</code> state when both the following are true:</p>
+
+<ul>
+<li>The task being killed is a non-production task.</li>
+<li>The other task is a <code>PENDING</code> production task that hasn’t been
+scheduled due to a lack of resources.</li>
+</ul>
+
+<p>Since production tasks are much more important, Aurora kills off the
+non-production task to free up resources for the production task. The
+scheduler UI shows the non-production task was preempted in favor of the
+production task. At some point, tasks in <code>PREEMPTING</code> move to <code>KILLED</code>.</p>
+
+<p>Note that non-production tasks consuming many resources are likely to be
+preempted in favor of production tasks.</p>
+
+<h3 id="natural-termination:-finished,-failed">Natural Termination: FINISHED, FAILED</h3>
+
+<p>A <code>RUNNING</code> <code>Task</code> can terminate without direct user interaction. For
+example, it may be a finite computation that finishes, even something as
+simple as <code>echo hello world.</code>Or it could be an exceptional condition in
+a long-lived service. If the <code>Task</code> is successful (its underlying
+processes have succeeded with exit status <code>0</code> or finished without
+reaching failure limits) it moves into <code>FINISHED</code> state. If it finished
+after reaching a set of failure limits, it goes into <code>FAILED</code> state.</p>
+
+<h3 id="forceful-termination:-killing,-restarting">Forceful Termination: KILLING, RESTARTING</h3>
+
+<p>You can terminate a <code>Task</code> by issuing an <code>aurora kill</code> command, which
+moves it into <code>KILLING</code> state. The scheduler then sends the slave a
+request to terminate the <code>Task</code>. If the scheduler receives a successful
+response, it moves the Task into <code>KILLED</code> state and never restarts it.</p>
+
+<p>The scheduler has access to a non-public <code>RESTARTING</code> state. If a <code>Task</code>
+is forced into the <code>RESTARTING</code> state, the scheduler kills the
+underlying task but in parallel schedules an identical replacement for
+it.</p>
+
+<h2 id="configuration">Configuration</h2>
+
+<p>You define and configure your Jobs (and their Tasks and Processes) in
+Aurora configuration files. Their filenames end with the <code>.aurora</code>
+suffix, and you write them in Python making use of the Pystachio
+templating language, along
+with specific Aurora, Mesos, and Thermos commands and methods. See the
+<a href="/documentation/latest/configuration-reference/">Configuration Guide and Reference</a> and
+<a href="/documentation/latest/configuration-tutorial/">Configuration Tutorial</a>.</p>
+
+<h2 id="service-discovery">Service Discovery</h2>
+
+<p>It is possible for the Aurora executor to announce tasks into ServerSets for
+the purpose of service discovery. ServerSets use the Zookeeper <a href="http://zookeeper.apache.org/doc/trunk/recipes.html#sc_outOfTheBox">group membership pattern</a>
+of which there are several reference implementations:</p>
+
+<ul>
+<li><a href="https://github.com/apache/mesos/blob/master/src/zookeeper/group.cpp">C++</a></li>
+<li><a href="https://github.com/twitter/commons/blob/master/src/java/com/twitter/common/zookeeper/ServerSetImpl.java#L221">Java</a></li>
+<li><a href="https://github.com/twitter/commons/blob/master/src/python/twitter/common/zookeeper/serverset/serverset.py#L51">Python</a></li>
+</ul>
+
+<p>These can also be used natively in Finagle using the <a href="https://github.com/twitter/finagle/blob/master/finagle-serversets/src/main/scala/com/twitter/finagle/zookeeper/ZookeeperServerSetCluster.scala">ZookeeperServerSetCluster</a>.</p>
+
+<p>For more information about how to configure announcing, see the <a href="/documentation/latest/configuration-reference/">Configuration Reference</a>.</p>
+
+<h2 id="creating-jobs">Creating Jobs</h2>
+
+<p>You create and manipulate Aurora Jobs with the Aurora client, which starts all its
+command line commands with
+<code>aurora</code>. See <a href="/documentation/latest/client-commands/">Aurora Client Commands</a> for details
+about the Aurora Client.</p>
+
+<h2 id="interacting-with-jobs">Interacting With Jobs</h2>
+
+<p>You interact with Aurora jobs either via:</p>
+
+<ul>
+<li>Read-only Web UIs</li>
+</ul>
+
+<p>Part of the output from creating a new Job is a URL for the Job’s scheduler UI page.</p>
+
+<p>For example:</p>
+<pre class="highlight text"> vagrant@precise64:~$ aurora create devcluster/www-data/prod/hello \
+ /vagrant/examples/jobs/hello_world.aurora
+ INFO] Creating job hello
+ INFO] Response from scheduler: OK (message: 1 new tasks pending for job www-data/prod/hello)
+ INFO] Job url: http://precise64:8081/scheduler/www-data/prod/hello
+</pre>
+<p>The “Job url” goes to the Job’s scheduler UI page. To go to the overall scheduler UI page,
+ stop at the “scheduler” part of the URL, in this case, <code>http://precise64:8081/scheduler</code></p>
+
+<p>You can also reach the scheduler UI page via the Client command <code>aurora open</code>:</p>
+<pre class="highlight text"> aurora open [<cluster>[/<role>[/<env>/<job_name>]]]
+</pre>
+<p>If only the cluster is specified, it goes directly to that cluster’s scheduler main page.
+ If the role is specified, it goes to the top-level role page. If the full job key is specified,
+ it goes directly to the job page where you can inspect individual tasks.</p>
+
+<p>Once you click through to a role page, you see Jobs arranged separately by pending jobs, active
+ jobs, and finished jobs. Jobs are arranged by role, typically a service account for production
+ jobs and user accounts for test or development jobs.</p>
+
+<ul>
+<li>The Aurora Client’s command line interface</li>
+</ul>
+
+<p>Several Client commands have a <code>-o</code> option that automatically opens a window to
+ the specified Job’s scheduler UI URL. And, as described above, the <code>open</code> command also takes
+ you there.</p>
+
+<p>For a complete list of Aurora Client commands, use <code>aurora help</code> and, for specific
+ command help, <code>aurora help [command]</code>. <strong>Note</strong>: <code>aurora help open</code>
+ returns <code>"subcommand open not found"</code> due to our reflection tricks not
+ working on words that are also builtin Python function names. Or see the
+ <a href="/documentation/latest/client-commands/">Aurora Client Commands</a> document.</p>
+
+ </div>
+ </div>
+
+ <div class="container-fluid section-footer buffer">
+ <div class="container">
+ <div class="row">
+ <div class="col-md-2 col-md-offset-1"><h3>Quick Links</h3>
+ <ul>
+ <li><a href="/downloads/">Downloads</a></li>
+ <li><a href="/community/">Mailing Lists</a></li>
+ <li><a href="http://issues.apache.org/jira/browse/AURORA">Issue Tracking</a></li>
+ <li><a href="/documentation/latest/contributing/">How To Contribute</a></li>
+ </ul>
+ </div>
+ <div class="col-md-2"><h3>The ASF</h3>
+ <ul>
+ <li><a href="http://www.apache.org/licenses/">License</a></li>
+ <li><a href="http://www.apache.org/foundation/sponsorship.html">Sponsorship</a></li>
+ <li><a href="http://www.apache.org/foundation/thanks.html">Thanks</a></li>
+ <li><a href="http://www.apache.org/security/">Security</a></li>
+ </ul>
+ </div>
+ <div class="col-md-6">
+ <p class="disclaimer">Apache Aurora is an effort undergoing incubation at The Apache Software Foundation (ASF), sponsored by the Apache Incubator. Incubation is required of all newly accepted projects until a further review indicates that the infrastructure, communications, and decision making process have stabilized in a manner consistent with other successful ASF projects. While incubation status is not necessarily a reflection of the completeness or stability of the code, it does indicate that the project has yet to be fully endorsed by the ASF.</p>
+ <p class="disclaimer">Copyright 2014 <a href="http://www.apache.org/">Apache Software Foundation</a>. Licensed under the <a href="http://www.apache.org/licenses/">Apache License v2.0</a>. The <a href="https://www.flickr.com/photos/trondk/12706051375/">Aurora Borealis IX photo</a> displayed on the homepage is available under a <a href="https://creativecommons.org/licenses/by-nc-nd/2.0/">Creative Commons BY-NC-ND 2.0 license</a>. Apache, Apache Aurora, and the Apache feather logo are trademarks of The Apache Software Foundation.</p>
+ </div>
+ </div>
+ </div>
+ </body>
+</html>
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+<!DOCTYPE html>
+<html lang="en">
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+ <div class="container-fluid section-header">
+ <div class="container">
+ <div class="nav nav-bar">
+ <a href="/"><img src="/assets/img/aurora_logo_white_bkg.svg" width="300" alt="Transparent Apache Aurora logo with dark background"/></a>
+ <ul class="nav navbar-nav navbar-right">
+ <li><a href="/documentation/latest/">Documentation</a></li>
+ <li><a href="/community/">Community</a></li>
+ <li><a href="/downloads/">Downloads</a></li>
+ <li><a href="/blog/">Blog</a></li>
+ </ul>
+ </div>
+ </div>
+</div>
+ <div class="container-fluid">
+ <div class="container content">
+ <h1 id="getting-started">Getting Started</h1>
+
+<p>To replicate a real cluster environment as closely as possible, we use
+<a href="http://www.vagrantup.com/">Vagrant</a> to launch a complete Aurora cluster in a virtual machine.</p>
+
+<h2 id="prerequisites">Prerequisites</h2>
+
+<ul>
+<li><a href="https://www.virtualbox.org/">VirtualBox</a></li>
+<li><a href="http://www.vagrantup.com/">Vagrant</a></li>
+<li>A clone of the Aurora repository, or source distribution.</li>
+</ul>
+
+<p>You can start a local cluster by running:</p>
+<pre class="highlight text">vagrant up
+</pre>
+<p>Once started, several services should be running:</p>
+
+<ul>
+<li>scheduler is listening on <a href="http://192.168.33.7:8081">http://192.168.33.7:8081</a></li>
+<li>observer is listening on <a href="http://192.168.33.7:1338">http://192.168.33.7:1338</a></li>
+<li>master is listening on <a href="http://192.168.33.7:5050">http://192.168.33.7:5050</a></li>
+<li>slave is listening on <a href="http://192.168.33.7:5051">http://192.168.33.7:5051</a></li>
+</ul>
+
+<p>You can SSH into the machine with <code>vagrant ssh</code> and execute aurora client commands using the
+<code>aurora</code> command. A pre-installed <code>clusters.json</code> file refers to your local cluster as
+<code>devcluster</code>, which you will use in client commands.</p>
+
+<h1 id="deleting-your-local-cluster">Deleting your local cluster</h1>
+
+<p>Once you are finished with your local cluster, or if you would otherwise like to start from scratch,
+you can use the command <code>vagrant destroy</code> to turn off and delete the virtual file system.</p>
+
+<h1 id="rebuilding-components">Rebuilding components</h1>
+
+<p>If you are changing Aurora code and would like to rebuild a component, you can use the <code>aurorabuild</code>
+command on your vagrant machine to build and restart a component. This is considerably faster than
+destroying and rebuilding your VM.</p>
+
+<p><code>aurorabuild</code> accepts a list of components to build and update. You may invoke the command with
+no arguments to get a list of supported components.</p>
+<pre class="highlight text"> vagrant ssh -c 'aurorabuild client'
+</pre>
+<h1 id="troubleshooting">Troubleshooting</h1>
+
+<p>Most of the vagrant related problems can be fixed by the following steps:
+* Destroying the vagrant environment with <code>vagrant destroy</code>
+* Killing any orphaned VMs (see AURORA-499) with <code>virtualbox</code> UI or <code>VBoxManage</code> command line tool
+* Cleaning the repository of build artifacts and other intermediate output with <code>git clean -fdx</code>
+* Bringing up the vagrant environment with <code>vagrant up</code></p>
+
+ </div>
+ </div>
+
+ <div class="container-fluid section-footer buffer">
+ <div class="container">
+ <div class="row">
+ <div class="col-md-2 col-md-offset-1"><h3>Quick Links</h3>
+ <ul>
+ <li><a href="/downloads/">Downloads</a></li>
+ <li><a href="/community/">Mailing Lists</a></li>
+ <li><a href="http://issues.apache.org/jira/browse/AURORA">Issue Tracking</a></li>
+ <li><a href="/documentation/latest/contributing/">How To Contribute</a></li>
+ </ul>
+ </div>
+ <div class="col-md-2"><h3>The ASF</h3>
+ <ul>
+ <li><a href="http://www.apache.org/licenses/">License</a></li>
+ <li><a href="http://www.apache.org/foundation/sponsorship.html">Sponsorship</a></li>
+ <li><a href="http://www.apache.org/foundation/thanks.html">Thanks</a></li>
+ <li><a href="http://www.apache.org/security/">Security</a></li>
+ </ul>
+ </div>
+ <div class="col-md-6">
+ <p class="disclaimer">Apache Aurora is an effort undergoing incubation at The Apache Software Foundation (ASF), sponsored by the Apache Incubator. Incubation is required of all newly accepted projects until a further review indicates that the infrastructure, communications, and decision making process have stabilized in a manner consistent with other successful ASF projects. While incubation status is not necessarily a reflection of the completeness or stability of the code, it does indicate that the project has yet to be fully endorsed by the ASF.</p>
+ <p class="disclaimer">Copyright 2014 <a href="http://www.apache.org/">Apache Software Foundation</a>. Licensed under the <a href="http://www.apache.org/licenses/">Apache License v2.0</a>. The <a href="https://www.flickr.com/photos/trondk/12706051375/">Aurora Borealis IX photo</a> displayed on the homepage is available under a <a href="https://creativecommons.org/licenses/by-nc-nd/2.0/">Creative Commons BY-NC-ND 2.0 license</a>. Apache, Apache Aurora, and the Apache feather logo are trademarks of The Apache Software Foundation.</p>
+ </div>
+ </div>
+ </div>
+ </body>
+</html>
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+<!DOCTYPE html>
+<html lang="en">
+ <head>
+ <meta charset="utf-8">
+ <meta name="viewport" content="width=device-width, initial-scale=1">
+ <title>Apache Aurora</title>
+ <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css">
+ <link href="/assets/css/main.css" rel="stylesheet">
+ <!-- Analytics -->
+ <script type="text/javascript">
+ var _gaq = _gaq || [];
+ _gaq.push(['_setAccount', 'UA-45879646-1']);
+ _gaq.push(['_setDomainName', 'apache.org']);
+ _gaq.push(['_trackPageview']);
+
+ (function() {
+ var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
+ ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
+ var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
+ })();
+ </script>
+ </head>
+ <body>
+
+ <div class="container-fluid section-header">
+ <div class="container">
+ <div class="nav nav-bar">
+ <a href="/"><img src="/assets/img/aurora_logo_white_bkg.svg" width="300" alt="Transparent Apache Aurora logo with dark background"/></a>
+ <ul class="nav navbar-nav navbar-right">
+ <li><a href="/documentation/latest/">Documentation</a></li>
+ <li><a href="/community/">Community</a></li>
+ <li><a href="/downloads/">Downloads</a></li>
+ <li><a href="/blog/">Blog</a></li>
+ </ul>
+ </div>
+ </div>
+</div>
+ <div class="container-fluid">
+ <div class="container content">
+ <h1 id="download-aurora">Download Aurora</h1>
+
+<h2 id="current-release">Current Release</h2>
+
+<p>The current released version is <em>0.6.0-incubating</em>. <a href="https://dist.apache.org/repos/dist/release/incubator/aurora/0.6.0/apache-aurora-0.6.0-incubating.tar.gz">(.tar.gz)</a>
+<a href="https://dist.apache.org/repos/dist/release/incubator/aurora/0.6.0/apache-aurora-0.6.0-incubating.tar.gz.md5">(md5)</a>
+<a href="https://dist.apache.org/repos/dist/release/incubator/aurora/0.6.0/apache-aurora-0.6.0-incubating.tar.gz.sha">(sha)</a>
+<a href="https://dist.apache.org/repos/dist/release/incubator/aurora/0.6.0/apache-aurora-0.6.0-incubating.tar.gz.asc">(sig)</a></p>
+
+<p>To quickly get started, we reccomend using Vagrant and following the <a href="http://localhost:4567/documentation/latest/vagrant/">Getting Started guide</a>.</p>
+
+<h2 id="previous-releases">Previous Releases</h2>
+
+<p><em>0.5.0-incubating</em> <a href="https://dist.apache.org/repos/dist/release/incubator/aurora/0.5.0/apache-aurora-0.5.0-incubating.tar.gz">(.tar.gz)</a>
+<a href="https://dist.apache.org/repos/dist/release/incubator/aurora/0.5.0/apache-aurora-0.5.0-incubating.tar.gz.md5">(md5)</a>
+<a href="https://dist.apache.org/repos/dist/release/incubator/aurora/0.5.0/apache-aurora-0.5.0-incubating.tar.gz.sha">(sha)</a>
+<a href="https://dist.apache.org/repos/dist/release/incubator/aurora/0.5.0/apache-aurora-0.5.0-incubating.tar.gz.asc">(sig)</a></p>
+
+<h2 id="git">Git</h2>
+
+<p>The latest code is available in git via:</p>
+<pre class="highlight text">git clone http://git.apache.org/incubator-aurora.git
+</pre>
+<p>You can browse the repo on
+<a href="https://git-wip-us.apache.org/repos/asf?p=incubator-aurora.git">Apache Git</a>
+and the <a href="https://github.com/apache/incubator-aurora">Github mirror</a>.</p>
+
+ </div>
+ </div>
+
+ <div class="container-fluid section-footer buffer">
+ <div class="container">
+ <div class="row">
+ <div class="col-md-2 col-md-offset-1"><h3>Quick Links</h3>
+ <ul>
+ <li><a href="/downloads/">Downloads</a></li>
+ <li><a href="/community/">Mailing Lists</a></li>
+ <li><a href="http://issues.apache.org/jira/browse/AURORA">Issue Tracking</a></li>
+ <li><a href="/documentation/latest/contributing/">How To Contribute</a></li>
+ </ul>
+ </div>
+ <div class="col-md-2"><h3>The ASF</h3>
+ <ul>
+ <li><a href="http://www.apache.org/licenses/">License</a></li>
+ <li><a href="http://www.apache.org/foundation/sponsorship.html">Sponsorship</a></li>
+ <li><a href="http://www.apache.org/foundation/thanks.html">Thanks</a></li>
+ <li><a href="http://www.apache.org/security/">Security</a></li>
+ </ul>
+ </div>
+ <div class="col-md-6">
+ <p class="disclaimer">Apache Aurora is an effort undergoing incubation at The Apache Software Foundation (ASF), sponsored by the Apache Incubator. Incubation is required of all newly accepted projects until a further review indicates that the infrastructure, communications, and decision making process have stabilized in a manner consistent with other successful ASF projects. While incubation status is not necessarily a reflection of the completeness or stability of the code, it does indicate that the project has yet to be fully endorsed by the ASF.</p>
+ <p class="disclaimer">Copyright 2014 <a href="http://www.apache.org/">Apache Software Foundation</a>. Licensed under the <a href="http://www.apache.org/licenses/">Apache License v2.0</a>. The <a href="https://www.flickr.com/photos/trondk/12706051375/">Aurora Borealis IX photo</a> displayed on the homepage is available under a <a href="https://creativecommons.org/licenses/by-nc-nd/2.0/">Creative Commons BY-NC-ND 2.0 license</a>. Apache, Apache Aurora, and the Apache feather logo are trademarks of The Apache Software Foundation.</p>
+ </div>
+ </div>
+ </div>
+ </body>
+</html>
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+<!DOCTYPE html>
+<html lang="en">
+ <head>
+ <meta charset="utf-8">
+ <meta name="viewport" content="width=device-width, initial-scale=1">
+ <title>Apache Aurora</title>
+ <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css">
+ <link href="/assets/css/main.css" rel="stylesheet">
+ <!-- Analytics -->
+ <script type="text/javascript">
+ var _gaq = _gaq || [];
+ _gaq.push(['_setAccount', 'UA-45879646-1']);
+ _gaq.push(['_setDomainName', 'apache.org']);
+ _gaq.push(['_trackPageview']);
+
+ (function() {
+ var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
+ ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
+ var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
+ })();
+ </script>
+ </head>
+ <body>
+
+ <div class="container-fluid section-homepage-header">
+ <div class="container">
+ <div class="nav nav-bar">
+ <img src="/assets/img/aurora_logo_dkbkg.svg" width="300" alt="Transparent Apache Aurora logo with dark background"/>
+ <ul class="nav navbar-nav navbar-right">
+ <li><a href="/documentation/latest/">Documentation</a></li>
+ <li><a href="/community/">Community</a></li>
+ <li><a href="/downloads/">Downloads</a></li>
+ <li><a href="/blog/">Blog</a></li>
+ </ul>
+ </div>
+ </div>
+<div class="container">
+<div class="row text-center">
+<div class="col-md-8 col-md-offset-2">
+ <br /><br /><br /><br /><br /><br /><br />
+ <h1>Apache Aurora is a Mesos framework for long-running services and cron jobs.</h1>
+ <br /><br /><br /><br /><br /><br /><br />
+</div>
+</div>
+</div>
+</div>
+ <div class="container-fluid section-ltgreen buffer">
+ <div class="container">
+ <div class="row">
+ <div class="col-md-5 col-md-offset-1"><h2>What does Aurora do?</h2><p>Aurora runs applications and services across a shared pool of machines, and is responsible for keeping them running, forever. When machines experience failure, Aurora intelligently reschedules those jobs onto healthy machines.</p></div>
+ <div class="col-md-4 col-md-offset-1">
+ <iframe
+ width="420" height="236"
+ src="http://www.youtube-nocookie.com/embed/asd_h6VzaJc?rel=0&start=119&controls=0"
+ allowfullscreen></iframe></div>
+ </div>
+ </div>
+</div>
+
+<div class="container-fluid buffer">
+ <div class="container">
+ <h2 class="text-center">Key Aurora Features</h2>
+ <div class="row">
+ <div class="col-md-2 text-center"><p><span class="glyphicon glyphicon-tasks"></span></p></div>
+ <div class="col-md-4"><h3>Rolling Updates with Automatic Rollback</h3><p>When updating a job, Aurora will detect the health and status of a deployment and automatically rollback if necessary.</p></div>
+ <div class="col-md-2 text-center"><p><span class="glyphicon glyphicon-th"></span></p></div>
+ <div class="col-md-4"><h3>Resource Quota and Multi-User Support</h3><p>Aurora has a quota system to provide guaranteed resources for specific applications, and can support multiple users to deploy services.</p></div>
+ </div>
+ <div class="row">
+ <div class="col-md-2 text-center"><p><span class="glyphicon glyphicon-list-alt"></span></p></div>
+ <div class="col-md-4"><h3>Sophisticated DSL</h3><p>Services are highly-configurable via a <a href="/documentation/latest/configuration-tutorial">DSL</a> which supports templating, allowing you to establish common patterns and avoid redundant configurations.</p></div>
+ <div class="col-md-2 text-center"><p><span class="glyphicon glyphicon-cloud-upload"></span></p></div>
+ <div class="col-md-4"><h3>Service Registration</h3><p>Aurora <a href="/documentation/latest/configuration-reference/#announcer-objects">announces</a> services to Apache ZooKeeper for discovery by clients like Finagle.</p></div>
+ </div>
+ </div>
+</div>
+
+
+ <div class="container-fluid section-footer buffer">
+ <div class="container">
+ <div class="row">
+ <div class="col-md-2 col-md-offset-1"><h3>Quick Links</h3>
+ <ul>
+ <li><a href="/downloads/">Downloads</a></li>
+ <li><a href="/community/">Mailing Lists</a></li>
+ <li><a href="http://issues.apache.org/jira/browse/AURORA">Issue Tracking</a></li>
+ <li><a href="/documentation/latest/contributing/">How To Contribute</a></li>
+ </ul>
+ </div>
+ <div class="col-md-2"><h3>The ASF</h3>
+ <ul>
+ <li><a href="http://www.apache.org/licenses/">License</a></li>
+ <li><a href="http://www.apache.org/foundation/sponsorship.html">Sponsorship</a></li>
+ <li><a href="http://www.apache.org/foundation/thanks.html">Thanks</a></li>
+ <li><a href="http://www.apache.org/security/">Security</a></li>
+ </ul>
+ </div>
+ <div class="col-md-6">
+ <p class="disclaimer">Apache Aurora is an effort undergoing incubation at The Apache Software Foundation (ASF), sponsored by the Apache Incubator. Incubation is required of all newly accepted projects until a further review indicates that the infrastructure, communications, and decision making process have stabilized in a manner consistent with other successful ASF projects. While incubation status is not necessarily a reflection of the completeness or stability of the code, it does indicate that the project has yet to be fully endorsed by the ASF.</p>
+ <p class="disclaimer">Copyright 2014 <a href="http://www.apache.org/">Apache Software Foundation</a>. Licensed under the <a href="http://www.apache.org/licenses/">Apache License v2.0</a>. The <a href="https://www.flickr.com/photos/trondk/12706051375/">Aurora Borealis IX photo</a> displayed on the homepage is available under a <a href="https://creativecommons.org/licenses/by-nc-nd/2.0/">Creative Commons BY-NC-ND 2.0 license</a>. Apache, Apache Aurora, and the Apache feather logo are trademarks of The Apache Software Foundation.</p>
+ </div>
+ </div>
+ </div>
+ </body>
+</html>
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+ <div class="container-fluid section-footer buffer">
+ <div class="container">
+ <div class="row">
+ <div class="col-md-2 col-md-offset-1"><h3>Quick Links</h3>
+ <ul>
+ <li><a href="/downloads/">Downloads</a></li>
+ <li><a href="/community/">Mailing Lists</a></li>
+ <li><a href="http://issues.apache.org/jira/browse/AURORA">Issue Tracking</a></li>
+ <li><a href="/documentation/latest/contributing/">How To Contribute</a></li>
+ </ul>
+ </div>
+ <div class="col-md-2"><h3>The ASF</h3>
+ <ul>
+ <li><a href="http://www.apache.org/licenses/">License</a></li>
+ <li><a href="http://www.apache.org/foundation/sponsorship.html">Sponsorship</a></li>
+ <li><a href="http://www.apache.org/foundation/thanks.html">Thanks</a></li>
+ <li><a href="http://www.apache.org/security/">Security</a></li>
+ </ul>
+ </div>
+ <div class="col-md-6">
+ <p class="disclaimer">Apache Aurora is an effort undergoing incubation at The Apache Software Foundation (ASF), sponsored by the Apache Incubator. Incubation is required of all newly accepted projects until a further review indicates that the infrastructure, communications, and decision making process have stabilized in a manner consistent with other successful ASF projects. While incubation status is not necessarily a reflection of the completeness or stability of the code, it does indicate that the project has yet to be fully endorsed by the ASF.</p>
+ <p class="disclaimer">Copyright 2014 <a href="http://www.apache.org/">Apache Software Foundation</a>. Licensed under the <a href="http://www.apache.org/licenses/">Apache License v2.0</a>. The <a href="https://www.flickr.com/photos/trondk/12706051375/">Aurora Borealis IX photo</a> displayed on the homepage is available under a <a href="https://creativecommons.org/licenses/by-nc-nd/2.0/">Creative Commons BY-NC-ND 2.0 license</a>. Apache, Apache Aurora, and the Apache feather logo are trademarks of The Apache Software Foundation.</p>
+ </div>
+ </div>
+ </div>
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@@ -0,0 +1,22 @@
+<div class="container-fluid section-homepage-header">
+ <div class="container">
+ <div class="nav nav-bar">
+ <img src="/assets/img/aurora_logo_dkbkg.svg" width="300" alt="Transparent Apache Aurora logo with dark background"/>
+ <ul class="nav navbar-nav navbar-right">
+ <li><a href="/documentation/latest/">Documentation</a></li>
+ <li><a href="/community/">Community</a></li>
+ <li><a href="/downloads/">Downloads</a></li>
+ <li><a href="/blog/">Blog</a></li>
+ </ul>
+ </div>
+ </div>
+<div class="container">
+<div class="row text-center">
+<div class="col-md-8 col-md-offset-2">
+ <br /><br /><br /><br /><br /><br /><br />
+ <h1>Apache Aurora is a Mesos framework for long-running services and cron jobs.</h1>
+ <br /><br /><br /><br /><br /><br /><br />
+</div>
+</div>
+</div>
+</div>
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+<div class="container-fluid section-header">
+ <div class="container">
+ <div class="nav nav-bar">
+ <a href="/"><img src="/assets/img/aurora_logo_white_bkg.svg" width="300" alt="Transparent Apache Aurora logo with dark background"/></a>
+ <ul class="nav navbar-nav navbar-right">
+ <li><a href="/documentation/latest/">Documentation</a></li>
+ <li><a href="/community/">Community</a></li>
+ <li><a href="/downloads/">Downloads</a></li>
+ <li><a href="/blog/">Blog</a></li>
+ </ul>
+ </div>
+ </div>
+</div>
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+body {
+ background: rgba(0,0,0,0.04);
+}
+.container.content {
+ background: #fff;
+}
+h1, h2, h3 {
+ color: #004a63;
+}
+span.glyphicon {
+ font-size: 6em;
+ padding-top: 25px;
+}
+.section-ltgreen {
+ background: #40c3b0;
+ color: #fff;
+ font-size: 1.3em;
+ text-shadow: .5px .5px 0px #1b5d3e;
+}
+.section-ltgreen h2 {
+ color: #fff;
+}
+.section-footer {
+ background: #eee;
+}
+.section-homepage-header {
+ background-image: url("/assets/img/aurora_image_1600.jpg");
+ background-size: cover;
+ background-position: center bottom;
+}
+.section-homepage-header h1 {
+ color: #fff;
+ text-shadow: 1px 1px 3px #000;
+}
+.section-header {
+ background-image: url("/assets/img/aurora_image_1600.jpg");
+ background-size: cover;
+ color: #000;
+ background-color: #40c3b0;
+}
+.nav-bar a {
+ color: #fff;
+}
+.navbar li a:hover {
+ text-decoration-color: #40c3b0;
+ color: #fff;
+}
+.nav-bar li a:hover {
+ background: none;
+ text-decoration: underline;
+}
+.nav-bar li {
+ margin: 10px;
+ padding-top: 20px;
+}
+.buffer {
+ padding: 30px 0 30px 0;
+}
+.disclaimer {
+ font-size: .9em;
+ color: #AAA;
+}
+iframe {
+ border: none;
+}
+.author_contact {
+ display: inline-block;
+}
+.author_gravatar {
+ display: inline;
+ padding: 0 20px 20px 5px;
+}
+.share {
+ display: block;
+}
+code, pre {
+ color: #000;
+ border: none;
+}
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