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<p>This is a step by step guide to run Heron on a Mesos cluster locally.</p>
<h2><a class="anchor" aria-hidden="true" id="install-heron"></a><a href="#install-heron" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Install Heron</h2>
<p>Follow <a href="getting-started-local-single-node">Quick Start Guide</a> to install Heron.</p>
<h2><a class="anchor" aria-hidden="true" id="setting-up-an-apache-mesos-cluster-locally"></a><a href="#setting-up-an-apache-mesos-cluster-locally" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Setting up an Apache Mesos Cluster Locally</h2>
<p>Follow [Installing Mesos on your Mac with Homebrew]
(<a href="https://mesosphere.com/blog/2014/07/07/installing-mesos-on-your-mac-with-homebrew/">https://mesosphere.com/blog/2014/07/07/installing-mesos-on-your-mac-with-homebrew/</a>)
to install and run Mesos. To confirm Mesos cluster is ready for accepting Heron topologies, access
the Mesos management console <a href="http://localhost:5050">http://localhost:5050</a> and confirm there is
activated slaves.</p>
<p><img src="/docs/assets/mesos-management-console.png" alt="console page"></p>
<h2><a class="anchor" aria-hidden="true" id="configure-heron"></a><a href="#configure-heron" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Configure Heron</h2>
<h3><a class="anchor" aria-hidden="true" id="state-manager"></a><a href="#state-manager" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>State Manager</h3>
<p>By default, Heron uses Local File System State Manager on Mesos to manage states. Modify
<code>$HOME/.heron/conf/mesos/statemgr.yaml</code> to use ZooKeeper. For more details see <a href="state-managers-zookeeper">Setting up
ZooKeeper</a>.</p>
<h3><a class="anchor" aria-hidden="true" id="scheduler"></a><a href="#scheduler" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Scheduler</h3>
<p>Heron needs to know where to load the lib to interact with Mesos. Change the config
<code>heron.mesos.native.library.path</code> in <code>$HOME/.heron/conf/mesos/scheduler.yaml</code> to the library path
of the Mesos install. If Mesos is installed through <code>brew</code>, the library path should be
<code>/usr/local/Cellar/mesos/your_mesos_version/lib</code>.</p>
<blockquote>
<p>Mesos only offers a C++ interface, which is not portable across platforms.</p>
</blockquote>
<h2><a class="anchor" aria-hidden="true" id="run-topology-in-mesos"></a><a href="#run-topology-in-mesos" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Run Topology in Mesos</h2>
<p>After setting up Heron and Mesos, submit a topology using the following command. By default this
command loads the config in <code>$HOME/.heron/conf</code>. Add <code>--config-path=your_conf_path</code> to change the
config path.</p>
<pre><code class="hljs css language-bash">heron submit mesos --verbose ~/.heron/examples/heron-api-examples.jar \
org.apache.heron.examples.api.ExclamationTopology ExclamationTopology
</code></pre>
<p>The following will be displayed upon a successful submit.</p>
<pre><code class="hljs css language-bash">[2016-07-25 22:04:41 -0700] org.apache.heron.scheduler.mesos.MesosLauncher INFO: \
For checking the status and logs of the topology, use the working directory \
<span class="hljs-variable">$HOME</span>/.herondata/topologies/mesos/<span class="hljs-variable">$USER</span>/ExclamationTopology
[2016-07-25 22:04:41 -0700] org.apache.heron.scheduler.SubmitterMain FINE:  Topology \
ExclamationTopology submitted successfully
INFO: Topology <span class="hljs-string">'ExclamationTopology'</span> launched successfully
INFO: Elapsed time: 4.114s.
</code></pre>
<p>Note that this doesn't necessarily mean the topology is successfully launched in Mesos, to verify
check the working directory as shown in the output. You will see:</p>
<ul>
<li><code>heron-examples.jar</code>: the jar which contains the topology submitted.</li>
<li><code>heron-conf</code>: configurations used to launch the topology.</li>
<li><code>log-files</code>: directory containing Mesos scheduler's log.</li>
</ul>
<p>The log file will show whether the launch succeeded. If it succeeded, at the end of the log file
it will show the task is running.</p>
<pre><code class="hljs css language-bash">[2016-07-25 22:15:47 -0700] org.apache.heron.scheduler.mesos.framework.MesosFramework INFO: \
Received status update [...]
[2016-07-25 22:15:47 -0700] org.apache.heron.scheduler.mesos.framework.MesosFramework INFO: \
Task with id <span class="hljs-string">'container_1_1469510147073:0'</span> RUNNING
</code></pre>
<p>If the launch fails, an error message will be included. For example, if the Mesos library isn't
found in the configured location, the following exception will occur.</p>
<pre><code class="hljs css language-bash">[2016-07-25 22:04:42 -0700] stderr STDERR:  Failed to load native Mesos library from \
/usr/lib/mesos/0.28.1/lib
[2016-07-25 22:04:42 -0700] stderr STDERR:  Exception <span class="hljs-keyword">in</span> thread <span class="hljs-string">"main"</span>
[2016-07-25 22:04:42 -0700] stderr STDERR:  java.lang.UnsatisfiedLinkError: no mesos <span class="hljs-keyword">in</span> \ 
java.library.path
[2016-07-25 22:04:42 -0700] stderr STDERR:      at \
java.lang.ClassLoader.loadLibrary(ClassLoader.java:1867)
...
</code></pre>
<h2><a class="anchor" aria-hidden="true" id="mesos-management-console"></a><a href="#mesos-management-console" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Mesos Management Console</h2>
<p>Another way to check your topology is running is to look at the Mesos management console. If it
was launched successfully, two containers will be running.</p>
<p><img src="/docs/assets/mesos-management-console-with-topology.png" alt="result page"></p>
<p>To view the process logs, click the <code>sandbox</code> on the right side. The sandbox of the heron container
is shown below.</p>
<p><img src="/docs/assets/container-container-sandbox.png" alt="container-container-sandbox"></p>
<p>The <code>log-files</code> directory includes the application and GC log of the processes running in this
container.</p>
<p><img src="/docs/assets/container-log-files.png" alt="container-log-files"></p>
<p>The bolt log of the ExclamationTopology is <code>container_1_exclaim1_1.log.0</code>. Below is a sample of it.</p>
<p><img src="/docs/assets/bolt-log.png" alt="bolt-log"></p>
<h2><a class="anchor" aria-hidden="true" id="heron-ui"></a><a href="#heron-ui" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Heron UI</h2>
<p>Install Heron tools to monitor the topology with the <code>heron-ui</code> (see [Quick Start Guide]
(../../../../getting-started)). Configure the value of <code>statemgrs.rootpath</code> in
<code>$HOME/.herontools/conf/heron_tracker.yaml</code> to <code>$HOME/.herondata/repository/state/mesos</code> before
starting the tracker. This configuration sets the location of the state manager root path. Start
tracker and the UI.</p>
<pre><code class="hljs css language-bash">$ heron-tracker
... Running on port: 8888
... Using config file: <span class="hljs-variable">$HOME</span>/.herontools/conf/heron_tracker.yaml
</code></pre>
<pre><code class="hljs css language-bash">$ heron-ui
... Running on port: 8889
... Using tracker url: http://localhost:8888
</code></pre>
<p>Go to the UI at <a href="http://localhost:8889">http://localhost:8889</a> to see the topology.</p>
<p><img src="/docs/assets/mesos-local-heron-ui.png" alt="mesos-local-heron-ui"></p>
<p>To see the metrics, click on the topology.</p>
<p><img src="/docs/assets/mesos-local-heron-ui-more.png" alt="mesos-local-heron-ui-more"></p>
<p>To enter the Mesos Management Console page, click the <code>job</code> button.</p>
<p><img src="/docs/assets/mesos-local-heron-ui-to-mesos-console.png" alt="mesos-local-heron-ui-to-mesos-console"></p>
<h2><a class="anchor" aria-hidden="true" id="kill-topology"></a><a href="#kill-topology" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Kill Topology</h2>
<p>To kill the topology, run:</p>
<pre><code class="hljs css language-bash">heron <span class="hljs-built_in">kill</span> mesos ExclamationTopology
</code></pre>
</span></div></article></div><div class="docs-prevnext"><a class="docs-prev button" href="/docs/next/schedulers-nomad"><span class="arrow-prev">← </span><span>Nomad</span></a><a class="docs-next button" href="/docs/next/schedulers-slurm"><span>Slurm Cluster</span><span class="arrow-next"> →</span></a></div></div></div><nav class="onPageNav"><ul class="toc-headings"><li><a href="#install-heron">Install Heron</a></li><li><a href="#setting-up-an-apache-mesos-cluster-locally">Setting up an Apache Mesos Cluster Locally</a></li><li><a href="#configure-heron">Configure Heron</a><ul class="toc-headings"><li><a href="#state-manager">State Manager</a></li><li><a href="#scheduler">Scheduler</a></li></ul></li><li><a href="#run-topology-in-mesos">Run Topology in Mesos</a></li><li><a href="#mesos-management-console">Mesos Management Console</a></li><li><a href="#heron-ui">Heron UI</a></li><li><a href="#kill-topology">Kill Topology</a></li></ul></nav></div><footer class="nav-footer" id="footer"><div class="apache-disclaimer">Apache Heron is an effort undergoing incubation at <a target="_blank" href="https://apache.org/">The Apache Software Foundation (ASF)</a> sponsored by the Apache Incubator PMC. 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.<br/><br/>Apache®, the names of Apache projects, and the feather logo are either <a rel="external" href="https://www.apache.org/foundation/marks/list/">registered trademarks or trademarks</a> of the Apache Software Foundation in the United States and/or other countries.<br/><br/><div class="copyright-box">Copyright © 2023 the Apache Software Foundation, Apache Heron, Heron, 
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