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*** Possible solution! - Re: ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
Posted by: Manuel Medina
Date: September 27, 2008 08:25PM

After 3 weeks searching for answers on this problem and trying every single provided solution, this morning I finally understood what my problem was and I was able to run mysql successfully.

I'm using Gentoo, MySQL version 5.0.54 installed via emerge, but anyway I hope this solution can be helpful to someone.

My problem was that I had not changed the hostname on my machine. The default hostname was localhost, and whenever I tried to configure the server with emerge --config or by using mysql_install_db, I wasn't successful; emerge doesn't show any error message about this, just keeps going and tells you everything's done but you keep getting this annoying error; mysql_install_db at least tells you the installation failed, but doesn't give you a clue about what went wrong.

The system databases (mysql and test) were created successfully, but after getting this error and starting with the --skip-grant-tables option I realized that the user table in mysql database was empty. Yes, the root user, didn't exist. I tried to create it manually and use flush privileges, but I just kept getting the error.

I had to check the mysql_install_db script and found the following lines:




if { echo "use mysql;"; cat $create_system_tables $fill_system_tables; } | eval "$filter_cmd_line" | $mysqld_install_cmd_line > /dev/null


echo "Installation of system tables failed!"
echo "Examine the logs in $ldata for more information."


So the $create_system_tables was running ok, so the problem had to be $fill_system_tables. I restarted mysqld with the --skip-grant-options and issued the command

mysql mysql < mysql_system_tables_data.sql

It was here when it told me that there was a duplicated entry for "localhost".

I proceeded to delete the tables from /var/lib/mysql, setup the host name to something else, and restart the computer (because even when I had set /etc/hostname and changed /etc/hosts properly, the /sbin/hostname command kept returning 'localhost', and this is the command the mysql_install_db performs to get the host name). After rebooting I simply executed mysql_install_db and voilá! Everything went smoothly. The root user was created correctly (without a password), so I could enter using mysql -u root, changed the password and even created a couple of users.

I know this might sound useless to some of you guys, but give it a try. Change your host name to anything but "localhost" and try again. This problem kept me busy for some weeks (of course, I had more things to do) and I was about to file a bug on this.

Hope this information is useful.

Edited 1 time(s). Last edit at 09/27/2008 08:26PM by Manuel Medina.

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Written By
June 27, 2009 08:29PM
December 16, 2007 02:18AM
*** Possible solution! - Re: ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
September 27, 2008 08:25PM
December 27, 2007 02:08PM
January 16, 2011 06:51AM
August 27, 2009 12:22AM

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