How to run Elasticsearch 2.1.1 as root user in Linux machine

Question

I am trying to run Elasticsearch 2.1.1 in my Linux machine which I am the root user of it.

When I tried to execute the Elasticsearch.I am getting the following error

Answer 1

You can also create alias

alias elasticsearch='elasticsearch -Des.insecure.allow.root=true'

Add above line in bashrc file, After that elasticsearch command will work.