Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

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

During restarting mysql I had come errors, one of them was

2013-05-16 12:48:06 56189 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.

And I decided to try mysql_upgrade, but it failed:

Pavel-Kodentsevs-MacBook-Pro:bin pavelkodentsev$ ./mysql_upgrade -u root -p
Enter password: 
Looking for 'mysql' as: ./mysql
Looking for 'mysqlcheck' as: ./mysqlcheck
Running 'mysqlcheck with default connection arguments
Warning: Using a password on the command line interface can be insecure.
./mysqlcheck: Got error: 1045: Access denied for user 'root'@'localhost' (using password: YES) when trying to connect
FATAL ERROR: Upgrade failed

What can it be caused by? Pass is right, I've checked it several times.

share|improve this question

Access denied for user 'root'@'localhost' (using password: YES)

It cant connect to your local mysql server as root from localhost. Have you tried

Try renaming .my.cnf if you have one

mv /root/.my.cnf /root/.my.cnf.bak

and rerun the command.

share|improve this answer
But I do can connect to mysql server as root from localhost using mysql -u -p command – Pavel Kodentsev May 16 '13 at 13:59
Nop, I don't have such file (.my.cnf) – Pavel Kodentsev May 16 '13 at 14:44

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.