title: Starting hadoop daemons without password
body: <p>I setup single node hadoop cluster in ubuntu by following this pdf:
  {<a href="http://www.edureka.co/blog/wp-content/uploads/2013/12/15-minute-guide-to-install-Hadoop-Cluster.pdf" rel="nofollow">http://www.edureka.co/blog/wp-content/uploads/2013/12/15-minute-guide-to-install-Hadoop-Cluster.pdf</a>}. I am able to setup hadoop and its working fine. But whenever I start any hadoop daemons, it asks me my account password. Is it possible to start daemons without prompting the password?
  If yes then please tell me.</p>