title: Elasticsearch start error on Ubuntu nginx server
body: <p>I have setup elasticsearch on Ubuntu nginx server. But after successfully installed when i tried to start elasticsearch then this error show: "elasticsearch.service: Main process exited, code=exited, status=78/n/a elasticsearch.service: Failed with result 'exit-code'."</p>
  
  <p>I have tried a lot to solve this error. But no one suitable answered are met. Please suggest me the solution to solve this error.</p>