Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I am trying to run bin/hadoop namenode -format in Ubuntu 12.10 as a root user. But a "Permission Denied" error occurred. Any suggestions? Thanks in advance!

share|improve this question
Make sure you are entering the correct password. – Shagun Dec 7 '12 at 10:13
you shouldn't run it as root user but as hduser user if you created it within the hadoop group. – eliasah Jul 4 '14 at 8:20

The hadoop user doesn't have access this shall fix your issue

sudo chown -R hduser:hadoop /usr/local/hadoop
share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.