Commit 779315f6 authored by Georgios Ouzounis's avatar Georgios Ouzounis
Browse files

Reimplemented check running faq on Central VM.

parent bdab7f45
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<h3 class="box-title">Short guide on checking the execution of a Lambda Application</h3>
<h3 class="box-title">Short guide on checking which Applications are running</h3>
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<h1>Check Lambda Application Execution</h1>
<h1>Check Running Applications</h1>
<p>
While it is possible to observe which Lambda Applications run on which Lambda Instances using
{{#link-to 'faqs.lambda-application.observe-running'}}this{{/link-to}} guide, you might want to get
a closer look on the execution of your Application. This can be done by viewing the Apache Flink logs
generated during the execution of your Application. To do that, you have to connect via ssh on the Master Node
of your Lambda Instance. You can find the log files at <b>"/home/flink/supervisord_flink_streaming_logs.log"</b> and
<b>"/home/flink/supervisord_flink_batch_logs.log"</b>.
To view your Lambda Applications you can follow the guide show below.
</p>
<p>
The step-by-step directives you should execute are the following:
<p><img src="assets/img/check-applications.png" alt="check-applications.png" width="1000" height="250"></p>
<ol>
<li>
Connect over ssh on the Master Node of your Lambda Instance:
<pre>
ssh -l root snf-XXXXXX.vm.okeanos.grnet.gr
</pre>
where XXXXXX should be replaced with the id of the VM(e.g. snf-543786.vm.okeanos.grnet.gr). To find the id of the Master Node
of your Lambda Instance you can use {{#link-to 'faqs.lambda-instance.find-master-node-hostname'}}this{{/link-to}} guide.
</li><br>
<ol>
<li>
Log in the LoD Service VM using your ~okeanos token.
</li>
<li>
Move to the directory where the log files are places:
<pre>
cd /home/flink
</pre>
</li><br>
<li>
From the sidebar, select "Applications".
</li>
<li>
See the log files:
<pre>
cat supervisord_flink_streaming_logs.log
cat supervisord_flink_batch_logs.log
</pre>
</li>
</ol>
</p>
<li>
On the list of Lambda Applications that appear, choose the button "Details" to get more details about a specific Application.
</li>
</ol>
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