Where is ES log file?

Elastic Stack Elasticsearch
5

i used

  • centos7
  • repository install (yum install elasticsearch-2.3.3)
  • service elasticsearch start
  • check status : service elasticsearch status

I was using ES5.1 version and will test it in 2.3 version, so i deleted the 5.1 and updated the 2.3
ant then this issue has occurred.