“These are taken from the mysql website and is for refrence and documentation purpose”
On Unix, use the following procedure to reset the password for all MySQL
root accounts. The instructions assume that you will start the server so that it runs using the Unix login account that you normally use for running the server. For example, if you run the server using the
mysql login account, you should log in as
mysql before using the instructions. Alternatively, you can log in as
root, but in this case you must start mysqld with the
--user=mysql option. If you start the server as
root without using
--user=mysql, the server may create
root-owned files in the data directory, such as log files, and these may cause permission-related problems for future server startups. If that happens, you will need to either change the ownership of the files to
mysql or remove them.
- Log on to your system as the Unix user that the mysqld server runs as (for example,
- Locate the
.pidfile that contains the server’s process ID. The exact location and name of this file depend on your distribution, host name, and configuration. Common locations are
/usr/local/mysql/data/. Generally, the file name has an extension of
.pidand begins with either
mysqldor your system’s host name.
You can stop the MySQL server by sending a normal
kill -9) to the mysqld process, using the path name of the
.pidfile in the following command:
kill `cat /mysql-data-directory/host_name.pid`
Use backticks (not forward quotation marks) with the
catcommand. These cause the output of
catto be substituted into the
- Create a text file containing the following statements. Replace the password with the password that you want to use.
UPDATE mysql.user SET Password=PASSWORD('MyNewPass') WHERE User='root'; FLUSH PRIVILEGES;
FLUSHstatements each on a single line. The
UPDATEstatement resets the password for all
rootaccounts, and the
FLUSHstatement tells the server to reload the grant tables into memory so that it notices the password change.
- Save the file. For this example, the file will be named
/home/me/mysql-init. The file contains the password, so it should not be saved where it can be read by other users.
- Start the MySQL server with the special
mysqld_safe --init-file=/home/me/mysql-init &
The server executes the contents of the file named by the
--init-fileoption at startup, changing each
- After the server has started successfully, delete
You should now be able to connect to the MySQL server as
root using the new password. Stop the server and restart it normally.