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

1. Open script file:

   vi bin/elasticsearch

2. Add property for allow root:

   ES_JAVA_OPTS="-Des.insecure.allow.root=true"

3. Save and close.
4. You can start by root now.

Good luck.