title: Is it possible to connect to ec2 instance as root user by using the PEM file?
body: <p>I'm trying to connect to an EC2 AWS instance but when I tried to install PHPMYADMIN the linux console asks me for the root user password, which I forgot about. Could anyone please know how to use .PEM file to login as the root user? 
  I tried sudo su command but it still asks me for the root user.
  Any help is appreciated.</p>