How to set root password to null

Question

How can I change the password for root user of MySQL to null -- meaning no password or '' -- from the MySQL command line client?

Answer 1

You can recover MySQL database server password with following five easy steps.

Step # 1: Stop the MySQL server process.

Step # 2: Start the MySQL (mysqld) server/daemon process with the --skip-grant-tables option so that it will not prompt for password.

Step # 3: Connect to mysql server as the root user.

Step # 4: Setup new mysql root account password i.e. reset mysql password.

Step # 5: Exit and restart the MySQL server.

Here are commands you need to type for each step (login as the root user):

Step # 1 : Stop mysql service

# /etc/init.d/mysql stop

Output:

Stopping MySQL database server: mysqld.

Step # 2: Start to MySQL server w/o password:

# mysqld_safe --skip-grant-tables &

Output:

[1] 5988
Starting mysqld daemon with databases from /var/lib/mysql
mysqld_safe[6025]: started

Step # 3: Connect to mysql server using mysql client:

# mysql -u root

Output:

Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1 to server version: 4.1.15-Debian_1-log
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
mysql>

Step # 4: Setup new MySQL root user password

mysql> use mysql;
mysql> update user set password=PASSWORD("NEW-ROOT-PASSWORD") where User='root';
mysql> flush privileges;
mysql> quit

Step # 5: Stop MySQL Server:

# /etc/init.d/mysql stop

Output:

Stopping MySQL database server: mysqld
STOPPING server from pid file /var/run/mysqld/mysqld.pid
mysqld_safe[6186]: ended
[1]+  Done                    mysqld_safe --skip-grant-tables

Step # 6: Start MySQL server and test it

# /etc/init.d/mysql start
# mysql      
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO) 
# mysql -u root -p

Source: http://www.cyberciti.biz/tips/recover-mysql-root-password.html

Answer 2

Worked for me and "5.7.11 MySQL Community Server":

use mysql;
update user set authentication_string=password(''), plugin='mysql_native_password' where user='root';

I had to change the 'plugin' field as well because it was set to 'auth_socket'.

After that I could connect as mysql -u root without a password.

Answer 3

If you want an empty password, you should set the password to null and not use the Password hash function, as such:

On the command line:

sudo service mysql stop
sudo mysqld_safe --skip-grant-tables --skip-networking &
mysql -uroot

In MySQL:

use mysql;
update user set password=null where User='root';
flush privileges;
quit;

Answer 4

• connect to mysql as user root (use one of the two following methods)
  • login as root and start mysql using mysql -p, enter current root password
  • login as self and start mysql using mysql -u root -p, enter current root password
• mysql> set password = password('');

Done! No root password.

Answer 5

SET PASSWORD FOR 'root'@'localhost' = PASSWORD('');

Answer 6

This worked for me on Ubuntu 16.04 with v5.7.15 MySQL:

First, make sure you have mysql-client installed (sudo apt-get install mysql-client).

Open terminal and login:

mysql -uroot -p

(then type your password)

After that:

use mysql;
update user set authentication_string=password(''), plugin='mysql_native_password' where user='root';

(tnx @Stanislav Karakhanov)

And the very last important thing is to reset mysql service:

sudo service mysql restart

You should now be able to login (without passsword) also by using MySQL Workbench.

Answer 7

It's not a good idea to edit mysql database directly.

I prefer the following steps:

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY ''; 
mysql> flush privileges;

Answer 8

For MySQL 8.0 just:

SET PASSWORD FOR 'root'@'localhost' = '';

Answer 9

The answer by user64141

use mysql;
update user set password=null where User='root';
flush privileges;
quit;

didn't work for me in MariaDB 10.1.5 (supposed to be a drop in replacement for MySQL). While didn't tested it in MySQL 5.6 to see if is an upstream change, the error I got was:

ERROR 1048 (23000): Column 'Password' cannot be null

But replacing the null with empty single or double quotes worked fine.

update user set password='' where User='root';

or

update user set password="" where User='root';

Answer 10

It works for me.

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'password'

Answer 11

This is from MySQL 8.0.13:

use mysql;

update user set authentication_string=null  where user='root';

quit;

Answer 12

If you know your Root Password and just wish to reset it then do as below:

• Start MySQL Service from control panel > Administrative Tools > Services. (only if it was stopped by you earlier ! Otherwise, just skip this step)

• Start MySQL Workbench

• Type in this command/SQL line

  ALTER USER 'root'@'localhost' PASSWORD EXPIRE;

To reset any other user password... just type other user name instead of root.

Answer 13

For connect to mysql without password:

mysql -p SET PASSWORD = ""

https://dev.mysql.com/doc/refman/5.7/en/set-password.html

Answer 14

I am using nodejs and windows 10. A combination of two answers worked for me.

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY ''; 
mysql> flush privileges;

followed by:

restart;

Hope this helps for others who still have an issue with this.

Answer 15

The syntax is slightly different depending on version. From the docs here: https://dev.mysql.com/doc/refman/5.7/en/resetting-permissions.html

MySQL 5.7.6 and later:

ALTER USER 'root'@'localhost' IDENTIFIED BY '';

MySQL 5.7.5 and earlier:

SET PASSWORD FOR 'root'@'localhost' = PASSWORD('');

Answer 16

My variant for MySQL 5.7:

Stop service mysql:

$ sudo service mysql stop

Running in Safe Mode:

$ sudo mysqld_safe --skip-grant-tables --skip-networking

(above line is the whole command)

Open a new terminal window:

$ mysql -u root

$ mysql use mysql;

$ mysql update user set authentication_string=password('password') where user='root';

$ mysql update user set plugin="mysql_native_password" where User='root';

$ mysql flush privileges;
$ mysql quit;

Run the mysql service:

$ sudo service mysql start

Answer 17

Wanted to put my own 2cents in here bcuz the above answers did not work for me. On centos 7, mysql community v8, shell is bash.

The correct commands would be as follows:

# start mysql without password checking
systemctl stop mysqld 2>/dev/null
systemctl set-environment MYSQLD_OPTS="--skip-grant-tables" &&
systemctl start mysqld

# set default password to nothing
mysql -u root mysql <<- 'EOF'
    FLUSH PRIVILEGES;
    UNINSTALL COMPONENT 'file://component_validate_password';
    ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '';
    FLUSH PRIVILEGES;
    INSTALL COMPONENT 'file://component_validate_password';
EOF

# restart mysql normally
systemctl restart mysqld

then you can login without password:

mysql -u root

Answer 18

its all because you installed greater then 5.6 version of the mysql

Solutions

1.you can degrade mysql version solution

2 reconfigure authentication to native type or legacy type authentication using
configure option

Answer 19

I noticed a few of these solutions above are now deprecated.

To set an empty password simply follow these steps:

mysql -u root -p

use mysql

SET PASSWORD FOR 'root'@'localhost' = '';

\q (to quit)

now run: mysql -u root

You should be able to start mysql up without a password now.