I am not able index data from logstash to elasticsearch, hence I am not able to view the data index at the kibana UI.
This issue I saw only when, running the logstash command from the php file, I guess it's www-data user not sure, I am using nginx web server.
While this works for me when I running the command form the terminal being root user.
Please let me know what other information should I provide to further narrow down the issue.