title: How to read custom log file using filebeat and read and create a visualisation of data using kibana
body: <p>I have stocks.log as follows , I want to read and draw the graph(kibana visualisation ) for each of the stock</p>
  <pre><code>2021/06/13 17:58:42 :     INFO | Stock = TCS.NS,  Date = 2002-08-12
  2021/06/13 17:58:42 :     INFO | Volume=212976
  2021/06/13 17:58:42 :     INFO | Low=38.724998474121094
  2021/06/13 17:58:42 :     INFO | High=40.0
  2021/06/13 17:58:42 :     INFO | Open=38.724998474121094
  2021/06/13 17:58:42 :     INFO | Close=39.70000076293945
  2021/06/13 17:58:42 :     INFO | Stock = TCS.NS,  Date = 2002-08-13
  2021/06/13 17:58:42 :     INFO | Volume=153576
  2021/06/13 17:58:42 :     INFO | Low=38.875
  2021/06/13 17:58:42 :     INFO | High=40.38750076293945
  2021/06/13 17:58:42 :     INFO | Open=39.75
  2021/06/13 17:58:42 :     INFO | Close=39.162498474121094
  2021/06/13 17:58:42 :     INFO | Stock = TCS.NS,  Date = 2002-08-14
  2021/06/13 17:58:42 :     INFO | Volume=822776
  2021/06/13 17:58:42 :     INFO | Low=35.724998474121094
  2021/06/13 17:58:42 :     INFO | High=39.25
  2021/06/13 17:58:42 :     INFO | Open=39.25
  2021/06/13 17:58:42 :     INFO | Close=36.462501525878906
  </code></pre>
  <p>Is it possible to use filebeat-&gt; Elastic-&gt; Kibana for this use case.
  I am able to read the message per stock per date as message in elastic.
  But not able to parse the data and visualise in kibana.</p>
  <p>I used the following in ingest pipeline, able to see the fields extracted properly now</p>
  <pre><code>[
    {
      &quot;grok&quot;: {
        &quot;field&quot;: &quot;message&quot;,
        &quot;patterns&quot;: [
          &quot;%{GREEDYDATA:irrelevant_data}Stock = %{GREEDYDATA:Stock}\n%{GREEDYDATA:irrelevant_data}Date = %{GREEDYDATA:Bdate}\n%{GREEDYDATA:irrelevant_data}Volume=%{NUMBER:Volume}\n%{GREEDYDATA:irrelevant_data}Low=%{BASE10NUM:Low}\n%{GREEDYDATA:irrelevant_data}High=%{BASE10NUM:High}\n%{GREEDYDATA:irrelevant_data}Open=%{BASE10NUM:Open}\n%{GREEDYDATA:irrelevant_data}Close=%{BASE10NUM:Close}&quot;
        ]
      }
    }
  </code></pre>
  <p>The problem is now, Date is coming as string field, not sure how to convert that one to proper date format.</p>