title: filebeat not starting in linux and no logs are printed to troubleshoot
body: <p>This is a fresh installation of filebeat. I copied the configuration file filebeat.yml from an existing server.</p>
  
  <p>filebeat version : 6.8.5</p>
  
  <p>When the service is started with <code>sudo systemctl start filebeat</code>, following error is thrown when viewed the status of the service through <code>sudo systemctl status filebeat</code></p>
  
  <pre><code>filebeat.service: main process exited, code=exited, status=1/FAILURE
  Unit filebeat.service entered failed state.
  filebeat.service failed.
  filebeat.service holdoff time over, scheduling restart.
  Stopped Filebeat sends log files to Logstash or directly to Elasticsearch..
  start request repeated too quickly for filebeat.service
  Failed to start Filebeat sends log files to Logstash or directly to Elasticsearch..
  Unit filebeat.service entered failed state.
  filebeat.service failed.
  </code></pre>
  
  <p>What is the reason for failure?</p>