How to set root password to null - mysql

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

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.

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;

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.

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

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.

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

For MySQL 8.0 just:
SET PASSWORD FOR 'root'#'localhost' = '';

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;

This is from MySQL 8.0.13:
use mysql;
update user set authentication_string=null where user='root';
quit;

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.

It works for me.
ALTER USER 'root'#'localhost' IDENTIFIED WITH mysql_native_password BY 'password'

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';

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.

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.

For connect to mysql without password:
mysql -p
SET PASSWORD = ""
https://dev.mysql.com/doc/refman/5.7/en/set-password.html

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('');

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

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

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

On ubuntu 19.10, mysql 8, this is what worked for me:
$ sudo mysqld --skip-grant-tables &
$ mysql
> use mysql
> alter user set authentication_string='', plugin='mysql_native_password' where user = 'root';
> quit
$ sudo mysqladmin shutdown
$ sudo systemctl start mysql
If you get errors trying to run mysqld_safe, in particular: /var/run/mysqld for UNIX socket file don't exists, you can try creating the dir and running mysqld_safe again.
$ sudo mkdir /var/run/mysqld
$ sudo chown mysql /var/run/mysqld
$ sudo chgrp mysql /var/run/mysqld

After searching for hours i found it . just Change the password to something contains Upper case numeric and special characters in it.

Related

How to recovery password in MySQL workbench? [duplicate]

I have actually lost my root password and I need to change it. I follow these 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 a password.
Step # 3: Connect to the MySQL server as the root user.
that we can found on these website : https://www.howtoforge.com/setting-changing-resetting-mysql-root-passwords#recover-mysql-root-password
mysql> use mysql;
mysql> SET PASSWORD FOR 'root'#'localhost' = PASSWORD("TOOR");
mysql> flush privileges;
mysql> quit
First error, so I tried :
mysql> use mysql;
mysql> update user set password=PASSWORD("TOOR") where User='root';
mysql> flush privileges;
mysql> quit
Always the same error said :
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that
corresponds to your MySQL server version for the right syntax to use near '("TOO
R") WHERE User='root'' at line 1
How can I resolve this?
as here says:
This function was removed in MySQL 8.0.11
1.if you in skip-grant-tables mode
in mysqld_safe:
UPDATE mysql.user SET authentication_string=null WHERE User='root';
FLUSH PRIVILEGES;
exit;
and then, in terminal:
mysql -u root
in mysql:
ALTER USER 'root'#'localhost' IDENTIFIED WITH caching_sha2_password BY 'yourpasswd';
2.not in skip-grant-tables mode
just in mysql:
ALTER USER 'root'#'localhost' IDENTIFIED WITH caching_sha2_password BY 'yourpasswd';
Jus login to mysql with sudo
Sudo mysql
Then
ALTER USER 'root'#'localhost' IDENTIFIED WITH caching_sha2_password BY 'yourpasswd';
exit;
Test it
mysql -u root -p
Try this:
ALTER USER 'root'#'localhost' IDENTIFIED BY 'newPasswd';
If you are on Windows you can try following steps
Reset MySQL 8.0 root Password in Windows
Stop the MySQL 8.0service from services
Go to path C:\Program Files\MySQL\MySQL Server 8.0\bin and open cmd
Run mysqld --console --skip-grant-tables --shared-memory
Open new cmd in the same path
Run following commands
mysql -u root
select authentication_string,host from mysql.user where user='root';
UPDATE mysql.user SET authentication_string='' WHERE user='root';
Now close both the cmd.
Try to start the MySQL 8.0 service.
Connect using username as root & password as blank.
Change the password from the user management.
Found this at https://gist.github.com/pishangujeniya/0f839d11a7e692dadc49821c274a2394
Step 1: Create a new file in your root directory( e.g C:)
Step 2: Write this ALTER USER 'root'#'localhost' IDENTIFIED BY 'abc' and save it
Step 3: If your Mysql service is already running, please stop this and open your CMD
Step 4: Go to your Mysql installation directory (e.g C:\Program Files\MySQL\MySQL Server 8.0\bin) and type this command
mysql --init-file=C:/init.sql
Step 5: Execute this command and you are good to go :)
Refer this video for more clarification : https://www.youtube.com/watch?v=LsdV-7dFOhk
I am using 8.0.23 but had multiple issues. Here are the issues and solutions.
I followed the mysql docs and was able to do the reset, though I had isues. I have provided my solutions and a sample reset script.
Issues
following steps outlined by others had various failures
user running daemon is mysql and I cannot su to mysql id
getting error can't create lock file /var/run/mysqld/mysqlx.sock.lock , mysqld folder is getting deleted by the mysql service.
had to kill -9 mysql process after running, very ugly
Solutions
use steps from https://dev.mysql.com/doc/refman/8.0/en/resetting-permissions.html
use --user=mysql when running mysql commands
Create folder /var/run/mysqld and chown for mysql:mysql before runing comamnds
use mysqladmin shutdown to stop sql after starting it for reset
In the script, I will reset root to New%Password
# create password reset file
cat << EOF >/tmp/deleteme
ALTER USER 'root'#'localhost' IDENTIFIED WITH mysql_native_password BY 'New%Password';
EOF
# create /var/run/mysqld
mkdir /var/run/mysqld
chown mysql:mysql /var/run/mysqld
# start mysqld and run the command
mysqld --init-file=/tmp/deleteme --user=mysql &
# wait for sql to start
while [ ! -f /var/run/mysqld/mysqlx.sock.lock ]; do sleep 1; done
sleep 3
# stop sql
mysqladmin -u root -pNew%Password shutdown
while [ -f /var/run/mysqld/mysqlx.sock.lock ]; do sleep 1; done
#clean up temp file
rm /tmp/deleteme
Using SQLYog you can execute commands
User Creation
CREATE USER 'tester'#'localhost' IDENTIFIED BY 'Pass123#d'
Authorization
GRANT ALL PRIVILEGES ON sakila.* TO 'tester'#'localhost'
Changing Password in MySQL 8.0
ALTER USER 'tester'#'localhost' IDENTIFIED BY 'Pass123#d';
or if u know the authentication_string directly set it to update
UPDATE mysql.user
SET authentication_string='*F9B62579F38BE95639ACB009D79427F2D617158F'
WHERE USER='root'
Changing password in lower versions of mysql
GRANT USAGE ON *.\* TO 'tester'#'localhost' IDENTIFIED BY 'Pass123#d'
SET PASSWORD FOR 'tester'#'localhost' = PASSWORD('Pass123#d');

How to reset the root password in MySQL 8.0.11?

I have actually lost my root password and I need to change it. I follow these 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 a password.
Step # 3: Connect to the MySQL server as the root user.
that we can found on these website : https://www.howtoforge.com/setting-changing-resetting-mysql-root-passwords#recover-mysql-root-password
mysql> use mysql;
mysql> SET PASSWORD FOR 'root'#'localhost' = PASSWORD("TOOR");
mysql> flush privileges;
mysql> quit
First error, so I tried :
mysql> use mysql;
mysql> update user set password=PASSWORD("TOOR") where User='root';
mysql> flush privileges;
mysql> quit
Always the same error said :
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that
corresponds to your MySQL server version for the right syntax to use near '("TOO
R") WHERE User='root'' at line 1
How can I resolve this?
as here says:
This function was removed in MySQL 8.0.11
1.if you in skip-grant-tables mode
in mysqld_safe:
UPDATE mysql.user SET authentication_string=null WHERE User='root';
FLUSH PRIVILEGES;
exit;
and then, in terminal:
mysql -u root
in mysql:
ALTER USER 'root'#'localhost' IDENTIFIED WITH caching_sha2_password BY 'yourpasswd';
2.not in skip-grant-tables mode
just in mysql:
ALTER USER 'root'#'localhost' IDENTIFIED WITH caching_sha2_password BY 'yourpasswd';
Jus login to mysql with sudo
Sudo mysql
Then
ALTER USER 'root'#'localhost' IDENTIFIED WITH caching_sha2_password BY 'yourpasswd';
exit;
Test it
mysql -u root -p
Try this:
ALTER USER 'root'#'localhost' IDENTIFIED BY 'newPasswd';
If you are on Windows you can try following steps
Reset MySQL 8.0 root Password in Windows
Stop the MySQL 8.0service from services
Go to path C:\Program Files\MySQL\MySQL Server 8.0\bin and open cmd
Run mysqld --console --skip-grant-tables --shared-memory
Open new cmd in the same path
Run following commands
mysql -u root
select authentication_string,host from mysql.user where user='root';
UPDATE mysql.user SET authentication_string='' WHERE user='root';
Now close both the cmd.
Try to start the MySQL 8.0 service.
Connect using username as root & password as blank.
Change the password from the user management.
Found this at https://gist.github.com/pishangujeniya/0f839d11a7e692dadc49821c274a2394
Step 1: Create a new file in your root directory( e.g C:)
Step 2: Write this ALTER USER 'root'#'localhost' IDENTIFIED BY 'abc' and save it
Step 3: If your Mysql service is already running, please stop this and open your CMD
Step 4: Go to your Mysql installation directory (e.g C:\Program Files\MySQL\MySQL Server 8.0\bin) and type this command
mysql --init-file=C:/init.sql
Step 5: Execute this command and you are good to go :)
Refer this video for more clarification : https://www.youtube.com/watch?v=LsdV-7dFOhk
I am using 8.0.23 but had multiple issues. Here are the issues and solutions.
I followed the mysql docs and was able to do the reset, though I had isues. I have provided my solutions and a sample reset script.
Issues
following steps outlined by others had various failures
user running daemon is mysql and I cannot su to mysql id
getting error can't create lock file /var/run/mysqld/mysqlx.sock.lock , mysqld folder is getting deleted by the mysql service.
had to kill -9 mysql process after running, very ugly
Solutions
use steps from https://dev.mysql.com/doc/refman/8.0/en/resetting-permissions.html
use --user=mysql when running mysql commands
Create folder /var/run/mysqld and chown for mysql:mysql before runing comamnds
use mysqladmin shutdown to stop sql after starting it for reset
In the script, I will reset root to New%Password
# create password reset file
cat << EOF >/tmp/deleteme
ALTER USER 'root'#'localhost' IDENTIFIED WITH mysql_native_password BY 'New%Password';
EOF
# create /var/run/mysqld
mkdir /var/run/mysqld
chown mysql:mysql /var/run/mysqld
# start mysqld and run the command
mysqld --init-file=/tmp/deleteme --user=mysql &
# wait for sql to start
while [ ! -f /var/run/mysqld/mysqlx.sock.lock ]; do sleep 1; done
sleep 3
# stop sql
mysqladmin -u root -pNew%Password shutdown
while [ -f /var/run/mysqld/mysqlx.sock.lock ]; do sleep 1; done
#clean up temp file
rm /tmp/deleteme
Using SQLYog you can execute commands
User Creation
CREATE USER 'tester'#'localhost' IDENTIFIED BY 'Pass123#d'
Authorization
GRANT ALL PRIVILEGES ON sakila.* TO 'tester'#'localhost'
Changing Password in MySQL 8.0
ALTER USER 'tester'#'localhost' IDENTIFIED BY 'Pass123#d';
or if u know the authentication_string directly set it to update
UPDATE mysql.user
SET authentication_string='*F9B62579F38BE95639ACB009D79427F2D617158F'
WHERE USER='root'
Changing password in lower versions of mysql
GRANT USAGE ON *.\* TO 'tester'#'localhost' IDENTIFIED BY 'Pass123#d'
SET PASSWORD FOR 'tester'#'localhost' = PASSWORD('Pass123#d');

How to find out the MySQL root password

I cannot figure out my MySQL root password; how can I find this out? Is there any file where this password is stored?
I am following this link but I do not have directadmin directory in local.
thanks to #thusharaK I could reset the root password without knowing the old password.
On ubuntu I did the following:
sudo service mysql stop
sudo mysqld_safe --skip-grant-tables --skip-syslog --skip-networking
Then run mysql in a new terminal:
mysql -u root
And run the following queries to change the password:
UPDATE mysql.user SET authentication_string=PASSWORD('password') WHERE User='root';
FLUSH PRIVILEGES;
In MySQL 5.7, the password field in mysql.user table field was removed, now the field name is 'authentication_string'.
Quit the mysql safe mode and start mysql service by:
mysqladmin shutdown
sudo service mysql start
You can't view the hashed password; the only thing you can do is reset it!
Stop MySQL:
sudo service mysql stop
or
$ sudo /usr/local/mysql/support-files/mysql.server stop
Start it in safe mode:
$ sudo mysqld_safe --skip-grant-tables
(above line is the whole command)
This will be an ongoing command until the process is finished so open another shell/terminal window, log in without a password:
$ mysql -u root
mysql> UPDATE mysql.user SET Password=PASSWORD('password') WHERE User='root';
MySQL 5.7 and over:
mysql> use mysql;
mysql> update user set authentication_string=password('password') where user='root';
Exit the MySQL CLI:
mysql> exit
Restart MySQL in normal mode, first stopping the safe mode instance:
$ mysqladmin -u root -p shutdown # (when prompted, enter the new password just set)
$ sudo service mysql start
or
$ sudo /usr/local/mysql/support-files/mysql.server start
Your new password is 'password'.
MySQL 5.7 and above saves root in MySQL log file.
Please try this:
sudo grep 'temporary password' /var/log/mysqld.log
One thing that tripped me up on a new install of MySQL and wondering why I couldn't get the default password to work and why even the reset methods where not working.
Well turns out that on Ubuntu 18 the most recent version of MySQL server does not use password auth at all for the root user by default. So this means it doesn't matter what you set it to, it won't let you use it. It's expecting you to login from a privileged socket.
mysql -u root -p
This will not work, even if you are using the correct password.
Instead, you need to use:
sudo mysql
that will work with out any password.
then once you in you need type in
ALTER USER 'root'#'localhost' IDENTIFIED WITH mysql_native_password BY 'Password you want to use';
Then log out and now it will accept your password.
Follow these steps to reset password in Windows system
Stop Mysql service from task manager
Create a text file and paste the below statement
MySQL 5.7.5 and earlier:
SET PASSWORD FOR 'root'#'localhost' = PASSWORD('yournewpassword');
MySQL 5.7.6 and later:
ALTER USER 'root'#'localhost' IDENTIFIED BY 'yournewpassword';
Save as mysql-init.txt and place it in 'C' drive.
Open command prompt and paste the following
C:\> mysqld --init-file=C:\\mysql-init.txt
You cannot find it. It is stored in a database, which you need the root password to access, and even if you did get access somehow, it is hashed with a one-way hash. You can reset it: How to Reset the Root Password
This worked for me:
On terminal type the following
$ sudo mysql -u root -p
Enter password://just press enter
mysql>
Unless the package manager requests you to type the root password during installation, the default root password is the empty string. To connect to freshly installed server, type:
shell> mysql -u root --password=
mysql>
To change the password, get back the unix shell and type:
shell> mysqladmin -u root --password= password root
The new password is 'root'. Now connect to the server:
shell> mysql -u root --password=
ERROR 1045 (28000): Access denied for user 'root'#'localhost' (using password: NO)
Oops, the password has changed. Use the new one, root:
shell> mysql -u root --password=root
...
blah, blah, blah : mysql welcome banner
...
mysql>
Bingo! New do something interesting
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
+--------------------+
3 rows in set (0.00 sec)
Maurycy
As addition to the other answers, in a cpanel installation, the mysql root password is stored in a file named /root/.my.cnf. (and the cpanel service resets it back on change, so the other answers here won't help)
you can view mysql root password , well i have tried it on mysql 5.5 so do not know about other new version well work or not
nano ~/.my.cnf
The default password which worked for me after immediate installation of mysql server is : mysql
The procedure changes depending the version of MySql. Follow the procedure exactly as described for your version:
HINTS - Read before the instructions page for your version of MySql*
In step 5: Instead of run CMD, create a shortcut on your desktop calling CDM.exe. Then right-click on the shortcut and select "Execute as Administrator".
In step 6: Skip the first proposed version of the command and execute the second one, the one with the --defaults-file parameter
Once you execute the command, if everything is ok, the CMD window remains open and the command of step 6 continues executing. Simply close the window (click 'x'), and then force close MySQl from the Task Manager.
Delete the file with the SQL commands, and start again MySQL. The password must be changed now.
5.0
http://dev.mysql.com/doc/refman/5.0/en/resetting-permissions.html
5.1
http://dev.mysql.com/doc/refman/5.1/en/resetting-permissions.html
... just change the version in the link (5.5, 5.6, 5.7)
In your "hostname".err file inside the data folder MySQL works on, try to look for a string that starts with:
"A temporary password is generated for roor#localhost "
you can use
less /mysql/data/dir/hostname.err
then slash command followed by the string you wish to look for
/"A temporary password"
Then press n, to go to the Next result.
I solved this a different way, this may be easier for some.
I did it this way because I tried starting in safe mode but cannot connect with the error:
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
What I did was to connect normally as root:
$ sudo mysql -u root
Then I created a new super user:
mysql> grant all privileges on *.* to 'myuser'#'%' identified by 'mypassword' with grant option;
mysql> quit
Then log in as myuser
$ mysql -u myuser -p -h localhost
Trying to change the password gave me no errors but did nothing for me so I dropped and re-created the root user
mysql> drop user 'root'#'localhost;
mysql> mysql> grant all privileges on *.* to 'root'#'localhost' identified by 'mypassword' with grant option;
The root user is now working with the new password
Using Debian / Ubuntu mysql packages, you can login with user debian-sys-maint, which has all the expected privileges, the password is stored in the file /etc/mysql/debian.cnf
Answers provided here did not seem to work for me, the trick turned out to be:
ALTER USER 'root'#'localhost' IDENTIFIED WITH mysql_native_password BY 'test';
(complete answer here: Change user password in MySQL 5.7 with “plugin: auth_socket”)
System:
CentOS Linux 7
mysql Ver 14.14 Distrib 5.7.25
Procedure:
Open two shell sessions, logging in to one as the Linux root user
and the other as a nonroot user with access to the mysql command.
In your root session, stop the normal mysqld listener and start a
listener which bypasses password authentication (note: this is a
significant security risk as anyone with access to the mysql
command may access your databases without a password. You may want
to close active shell sessions and/or disable shell access before
doing this):
# systemctl stop mysqld
# /usr/sbin/mysqld --skip-grant-tables -u mysql &
In your nonroot session, log in to mysql and set the mysql root password:
$ mysql
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> SET PASSWORD FOR 'root'#'localhost' = PASSWORD('MyNewPass');
Query OK, 0 rows affected, 1 warning (0.01 sec)
mysql> quit;
In your root session, kill the passwordless instance of mysqld and restore the normal mysqld listener to service:
# kill %1
# systemctl start mysqld
In your nonroot session, test the new root password you configured above:
$ mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
...
mysql>
I was stuck with this problem for a couple of minutes and the following was the only solution that actually worked:
https://phoenixnap.com/kb/access-denied-for-user-root-localhost
sudo mysql
ALTER USER 'root'#'localhost' IDENTIFIED WITH mysql_native_password BY 'insert_password';
mysql -u root -p
In case you already set a password in the past the mysql -uroot -p solution will not work,
In my case I used some of the answers above to solve this (Ubuntu 16). The result was:
sudo service mysql stop
sudo mysqld_safe --skip-grant-tables &
if you see this text in the screen:
mysqld_safe Directory '/var/run/mysqld' for UNIX socket file don't exists.
then do:
sudo mkdir -p /var/run/mysqld
sudo chown mysql:mysql /var/run/mysqld
sudo mysqld_safe --skip-grant-tables & # Look at the & at the end!
Enter other terminal to set your password like this:
sudo mysql -u root
mysql> use mysql;
mysql> SET PASSWORD FOR 'root'#'localhost'=PASSWORD('__NEW__PASSWORD__');
mysql> flush privileges;
mysql> quit;
then restart the service and login
# end mysqld_safe in the other terminal
sudo service mysql start
sudo mysql -h 127.0.0.1 -uroot -p
For MySQL 5.5 on Windows 10
You can't find the password as it is hashed in the table, so resetting it is the only option.
The solution of importing the new password script by .txt file, as offered by Lokesh kumar Chippada, didn't work for me. I found that the command prompt just froze after initiating the import.
I added skip-grant-tables to the my.ini file as per the top the answer on this SO post by tonycoupland.
I was then able to login to mysql from the command line
$> mysql
and then in mysql
mysql> FLUSH PRIVILEGES;
mysql> SET PASSWORD FOR 'root'#'localhost' = PASSWORD('MyNewPass');
See 'B.3.3.2.3 Resetting the Root Password: Generic Instructions' on mysql dev page. I have now removed skip-grant-tables from the my.ini file, and I can login as a root user using the new password I created.
Go to phpMyAdmin > config.inc.php > $cfg['Servers'][$i]['password'] = '';

mysql root password forgotten

I did not use PHP MySQL for quite a while and now I need to use it again. But the problem is I forget the password for the MySQL console. and getting error #1045 when trying to login in to PHPMyAdmin.
In the MySQL site I saw an article how to reset root password( http://dev.mysql.com/doc/refman/5.0/en/resetting-permissions.html#resetting-permissions-windows)
Steps are
create a mysql-init.txt file containing UPDATE mysql.user SET Password=PASSWORD('newpass') WHERE User='root';
FLUSH PRIVILEGES;
I saved it as C:\me\mysql-init
and in command prompt I wrote--
C:\wamp\bin\mysql\mysql5.5.8\bin\mysqld --init-file=C:\me\mysql-init.txt
I tried with double backslashes also..but it is not working. MySQL console is asking for a password and it's not taking the new-one. What am I doing wrong? I have several tables there.what to do?
Thanks in advance.
Here are the steps to be followed:
Locate the MySQL configuration file using: $ mysql --help | grep -A 1 "Default options"
On Ubuntu 16, the file location is typically /etc/mysql/mysql.conf.d/mysqld.cnf
Edit the configuration file using: $ sudo nano /etc/mysql/mysql.conf.d/mysqld.cnf
Add skip-grant-tables under [mysqld] block and save the changes.
Restart MySQL service using: sudo service mysql restart
Check MySQL service status: sudo service mysql status
Login to mysql with: $ mysql -u root
And change the root password:
mysql> FLUSH PRIVILEGES;
mysql> ALTER USER 'root'#'localhost' IDENTIFIED WITH
mysql_native_password BY 'MyNewPass';
Revert back the MySQL configuration file changes by removing skip-grant-tables line or commenting it with a # (hash).
Finally restart the MySQL service and you are good to go.
I couldn't get mysqld in Adelave's answer to work. But this worked for me instead
stop and start mysql with --skip-grant-tables
service mysql.server stop
service mysql.server start --skip-grant-tables
then connect to your mysqld without username/password
mysql
then update the password on mysql command line
mysql> UPDATE mysql.user SET Password=PASSWORD('MyNewPass') WHERE User='root';
mysql> FLUSH PRIVILEGES;
mysql> \q
then restart mysql normally
service mysql.server restart
try to start mysql with --skip-grant-tables
mysqld --skip-grant-tables
then connect to your mysqld without username/password using mysql command line
shell> mysql
then issue command
> mysql> UPDATE mysql.user SET Password=PASSWORD('MyNewPass')
> WHERE User='root'; mysql> FLUSH PRIVILEGES;
If other answer could not help, you can try to uninstall/re-install mysql. It works on my ubuntu server:
$sudo apt-get purge mysql*
$sudo apt-get autoremove
$sudo apt-get autoclean
Update distribution
$sudo apt-get dist-upgrade
And re-install
$sudo apt-get install mysql-server
Mac OS Mojave
$ brew services stop mysql
$ pkill mysqld
// warning: deletes all tables
$ rm -rf /usr/local/var/mysql/
$ brew postinstall mysql
$ brew services restart mysql
$ mysql -u root
Welcome to the MySQL monitor. Commands end with ; or \g.
mysql> ALTER USER 'root'#'localhost' IDENTIFIED BY 'p4ssword';
Query OK, 0 rows affected (0.04 sec)
mysql> exit
Bye
Then you are back to normal for dev.
$ sudo mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
I don't like to see the word root in my .env files, so I usually do this after, if making a site such as www.hockeysticks.net:
#
CREATE DATABASE hockeysticks;
CREATE USER 'hockeysticks'#'localhost' IDENTIFIED BY 'hockeysticks';
GRANT ALL PRIVILEGES ON hockeysticks.* TO 'hockeysticks'#'localhost';
Then your localdev .env file is simple:
DB_DATABASE=hockeysticks
DB_USERNAME=hockeysticks
DB_PASSWORD=hockeysticks
Note: If you need to retain your databases, use the skip-grant-tables method. That has 3 hard parts:
Make sure MySQL is stopped, so you can restart it with skip-grant-tables
Make sure your password update SQL syntax is correct for your MySQL version
Make sure you append the end of the query with FLUSH PRIVELEGES;
Using windows command prompt you can change the password
Go to windows+R and run services.msc and then stop the MySQL services and see the properties of MySQL by right click and copy the path --defaults-file="C:\ProgramData\MySQL\MySQL Server 8.0\my.ini" as it required later.
Create text file reset.txt with the text ALTER USER 'root'#'localhost' IDENTIFIED BY 'Your New Password'; and save in C drive.
open the command prompt as administrator then change the directory where your MySQL is installed "C:\Program Files\MySQL\MySQL Server 8.0\bin".
Type the command mysqld --defaults-file="C:\ProgramData\MySQL\MySQL Server 8.0\my.ini" --init-file=C:\\reset.txt
Using SQLYog you can execute commands
User Creation
CREATE USER 'tester'#'localhost' IDENTIFIED BY 'Pass123#d'
Authorization
GRANT ALL PRIVILEGES ON sakila.* TO 'tester'#'localhost'
Changing Password in MySQL 8.0
ALTER USER 'tester'#'localhost' IDENTIFIED BY 'Pass123#d'
(or if u know the authentication_string directly set it to update)
UPDATE mysql.user
SET authentication_string='*F9B62579F38BE95639ACB009D79427F2D617158F'
WHERE USER='root'***
Changing password in lower versions of mysql
GRANT USAGE ON *.\* TO 'tester'#'localhost' IDENTIFIED BY 'Pass123#d'
SET PASSWORD FOR 'tester'#'localhost' = PASSWORD('Pass123#d');**

Setting the MySQL root user password on OS X

I just installed MySQL on Mac OS X. The next step was setting the root user password, so I did this next:
Launch the terminal app to access the Unix command line.
Under the Unix prompt I executed these commands:
cd /usr/local/mysql/bin
./mysqladmin -u root password 'password'
But, when I execute the command
./mysql -u root, this is the answer:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 224
Server version: 5.5.13 MySQL Community Server (GPL)
Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>
I can get into the mysql command line without any password!
Why is this?
Try the command FLUSH PRIVILEGES when you log into the MySQL terminal. If that doesn't work, try the following set of commands while in the MySQL terminal
mysql -u root
mysql> USE mysql;
mysql> UPDATE user SET password=PASSWORD("NEWPASSWORD") WHERE User='root';
mysql> FLUSH PRIVILEGES;
mysql> quit
Change out NEWPASSWORD with whatever password you want. Should be all set!
Update: As of MySQL 5.7, the password field has been renamed authentication_string. When changing the password, use the following query to change the password. All other commands remain the same:
mysql> UPDATE user SET authentication_string=PASSWORD("NEWPASSWORD") WHERE User='root';
for MySQL 8.0+ Don't use
mysql> UPDATE mysql.user SET authentication_string='password' WHERE User='root';
as it overwrites the authentication_string, which is supposed to be a hash and not plain text, instead use:
mysql> `ALTER USER 'root'#'localhost' IDENTIFIED BY 'MyNewPass';`
If you don't remember the password you set for root and need to reset it, follow these steps:
Stop the mysqld server, this varies per install
Run the server in safe mode with privilege bypass
sudo mysqld_safe --skip-grant-tables;
In a new window connect to the database, set a new password and flush the permissions & quit:
mysql -u root
For MySQL older than MySQL 5.7 use:
UPDATE mysql.user SET Password=PASSWORD('your-password') WHERE User='root';
For MySQL 5.7+ use:
USE mysql;
UPDATE mysql.user SET authentication_string=PASSWORD("your-password") WHERE User='root';
Refresh and quit:
FLUSH PRIVILEGES;
\q
Stop the safe mode server and start your regular server back. The new password should work now. It worked like a charm for me :)
Note
Run
UPDATE mysql.user SET authentication_string=null WHERE User='root';
if you don't want to set a password for root user. Or if PASSWORD() function doesn't work for you.
Once you've installed MySQL, you'll need to establish the "root" password. If you don't establish a root password, then, well, there is no root password, and you don't need a password to log in.
So, that being said, you need to establish a root password.
Using terminal enter the following:
Installation: Set root user password:
/usr/local/mysql/bin/mysqladmin -u root password NEW_PASSWORD_HERE
If you've made a mistake, or need to change the root password use the following:
Change root password:
cd /usr/local/mysql/bin/
./mysql -u root -p
> Enter password: [type old password invisibly]
use mysql;
update user set password=PASSWORD("NEW_PASSWORD_HERE") where User='root';
flush privileges;
quit
The instructions provided in the mysql website is so clear, than the above mentioned
$ sudo /usr/local/mysql/support-files/mysql.server stop
$ sudo /usr/local/mysql/support-files/mysql.server start --skip-grant-tables
/usr/local/mysql/bin/mysql
mysql> FLUSH PRIVILEGES;
mysql> ALTER USER 'root'#'localhost' IDENTIFIED BY 'MyNewPass';
mysql> exit or Ctrl + z
$ sudo /usr/local/mysql/support-files/mysql.server stop
$ sudo /usr/local/mysql/support-files/mysql.server start
/usr/local/mysql/support-files/mysql -u root -p
Enter the new password i.e MyNewPass
Reference: http://dev.mysql.com/doc/refman/5.7/en/resetting-permissions.html
Stop the mysqld server.
Mac OS X: System Preferences → MySQL → Stop MySQL Server
Linux (From Terminal): sudo systemctl stop mysqld.service
Start the server in safe mode with privilege bypass
From Terminal: sudo /usr/local/mysql/bin/mysqld_safe --skip-grant-tables
In a new terminal window:
sudo /usr/local/mysql/bin/mysql -u root
This will open the MySQL command-line client. From here enter:
UPDATE mysql.user SET authentication_string=PASSWORD('NewPassword') WHERE User='root';
FLUSH PRIVILEGES;
quit
Stop the mysqld server again and restart it in normal mode.
Mac OS X (From Terminal): sudo /usr/local/mysql/support-files/mysql.server restart
Linux Terminal: sudo systemctl restart mysqld
For the new MySQL 5.7, for some reason the binary commands of MySQL aren't attached to the shell, and you have to do:
Restart the Mac after the installation.
Start MySQL:
System Preferences → MySQL → Start button
Go to MySQL install folder in the terminal:
cd /usr/local/mysql/bin/
Access to MySQL:
./mysql -u root -p
And enter the initial password given to the installation.
In the MySQL client, change the password:
mysql> ALTER USER 'root'#'localhost' IDENTIFIED BY 'MyNewPassword';
In the terminal, write mysql -u root -p and hit Return.
Enter the current MySQL password that you must have noted down.
And set the password:
SET PASSWORD = PASSWORD('new_password');
Please refer to this documentation here for more details.
If you have forgot the MySQL root password, can’t remember or want to break in….. you can reset the MySQL database password from the command line in either Linux or OS X as long as you know the root user password of the box you are on:
(1) Stop MySQL
sudo /usr/local/mysql/support-files/mysql.server stop
(2) Start it in safe mode:
sudo mysqld_safe --skip-grant-tables
(3) This will be an ongoing command until the process is finished so open another shell/terminal window, log in without a password:
mysql -u root
UPDATE mysql.user SET Password=PASSWORD('password') WHERE User='root';
In the UPDATE command above just replace the 'password' with your own new password, make sure to keep the quotation marks
(4) Save and quite
FLUSH PRIVILEGES;
\q
(5) Start MySQL
sudo /usr/local/mysql/support-files/mysql.server start
I solved this by:
Shutting down my MySQL server: mysql.server stop
Running MySQL in safe mode: mysqld_safe --skip-grant-tables
In another terminal, login with mysql -u root
In the same terminal, run UPDATE mysql.user SET authentication_string=null WHERE User='root';, then FLUSH PRIVILEGES; and then exit with exit;
Stop the safe mode server with mysql.server stop and then start the normal one; mysql.server start
Now you can set your new password with
ALTER USER 'root'#'localhost' IDENTIFIED WITH caching_sha2_password BY 'yourpasswd';
None of the previous comments solved the issue on my Mac.
I used the commands below and it worked.
brew services stop mysql
pkill mysqld
rm -rf /usr/local/var/mysql/ # NOTE: this will delete your existing database!!!
brew postinstall mysql
brew services restart mysql
mysql -u root
When I installed OS X v10.10 (Yosemite), I got a problem with MySQL. I tried lot of methods, but none worked. I actually found a quite easy way. Try this out.
First log in to a terminal from super user (su) privileges.
sudo su
Stop MySQL
sudo /usr/local/mysql/support-files/mysql.server stop
Start in safe mode:
sudo mysqld_safe --skip-grant-tables
Open another terminal, log in as su privileges, and then, log in to the MySQL client (mysql) without a password
mysql -u root
Change the password
UPDATE mysql.user SET Password=PASSWORD('new_password') WHERE User='root';
Flush privileges
FLUSH PRIVILEGES;
You are done now.
The methods mentioned in existing answers don't work for MySQL 5.7.6 or later. According the MySQL documentation, this is the recommended way.
B.5.3.2.3 Resetting the Root Password: Generic Instructions
MySQL 5.7.6 and later:
mysql> ALTER USER 'root'#'localhost' IDENTIFIED BY 'MyNewPass';
Reference: https://dev.mysql.com/doc/refman/5.7/en/resetting-permissions.html
If you can't remember your password, #radtek's answer worked for me except in my case I had set up MySQL using brew which meant that steps 1 and 2 of his answer had to be changed to:
/usr/local/bin/mysql.server stop
/usr/local/bin/mysqld_safe --skip-grant-tables
Note: the lack of sudo.
I think this should work:
ALTER USER 'root'#'localhost' IDENTIFIED BY 'YOURNEWPASSWORD'
(Note that you should probably replace root with your username if it isn't root.)
This is what exactly worked for me:
Make sure no other MySQL process is running. To check this do the
following:
From the terminal, run this command:
lsof -i:3306
If any PID is returned, kill it using kill -9 PID
Go to System Preferences → MySQL → check if any MySQL instances are running, stop them.
Start MySQL with the command:
sudo /usr/local/mysql/bin/mysqld_safe --skip-grant-tables
The password for every user is stored in the mysql.user table under columns User and authentication_string respectively. We can update the table as:
UPDATE mysql.user SET authentication_string='your_password' where User='root'
Stopping MySQL Server
sudo /usr/local/mysql/support-files/mysql.server stop
Starting MySQL in safe mode
sudo /usr/local/mysql/bin/mysqld_safe --skip-grant-tables &
Changing the root password
/usr/local/mysql/bin/mysql -u root
use mysql;
UPDATE user SET authentication_string=PASSWORD('NEW_PASSWORD') WHERE user='root';
FLUSH PRIVILEGES;
exit
Testing
Run /usr/local/mysql/bin/mysql -u root
Now enter the new password to start using MySQL.
To reference MySQL 8.0.15 + , the password() function is not available. Use the command below.
Kindly use
UPDATE mysql.user SET authentication_string='password' WHERE User='root';
You can manually turn-off MySQL on Mac, by clicking on  Apple menu and open System Preferences. Choose the “MySQL” preference panel, and then click on the “Stop MySQL Server” button to stop MySQL Server on Mac.
After you stop your MySQL, you'll need to follow these steps.
You'll need to start MySQL in skip-grant-tables mode
sudo /usr/local/mysql/support-files/mysql.server start --skip-grant-tables
In your terminal itself, enter this command to flush existing privileges
/usr/local/mysql/bin/mysql mysql> FLUSH PRIVILEGES;
Now you need to alter the user password
mysql> ALTER USER 'root'#'localhost' IDENTIFIED BY 'newpassword';
mysql> exit
Then you can go to  Apple menu and open System Preferences. Choose the “MySQL” preference panel, then click on the “Stop MySQL Server” button to stop MySQL Server on Mac.
Finally you can again go to  Apple menu and open System Preferences. Choose the “MySQL” preference panel, then click on the “Start MySQL Server” button to start MySQL Server on Mac.
This workaround works on my laptop!
Mac with macOS v10.14.5 (Mojave).
MySQL 8.0.17 was installed with Homebrew.
I run the following command to locate the path of MySQL
brew info mysql
Once the path is known, I run this:
/usr/local/Cellar/mysql/8.0.17/bin/mysqld_safe --skip-grant-table
In another terminal I run:
mysql -u root
Inside that terminal, I changed the root password using:
update mysql.user set authentication_string='NewPassword' where user='root';
and to finish I run:
FLUSH PRIVILEGES;
And voilà, the password was reset.
References
Try this in a terminal:
/usr/local/bin/mysql_secure_installation
macOS v10.14 (Mojave) and later with 5.7.26 installed from the Mac OS X DMG installer.
When attempting to use the UPDATE command posted by other users, it results in the following error:
ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.
Copy the password that was presented to you by the installer, open a terminal, and do the following:
mysql -uroot -p
ALTER USER 'root'#'localhost' IDENTIFIED BY 'YOURPASSWORDHERE';
For MySQL 8
Shutdown MySQL server
Go to System Preferences -> MySQL
Click Stop MySQL Server button
Open two terminal [command-line] windows
In the first terminal window run the following:
mysqld_safe --skip-grant-tables
In the second terminal window do the following:
4.1. Login to MySQL
mysql -u root
4.2. Run the following in the MySQL prompt:
FLUSH PRIVILEGES;
ALTER USER 'root'#'localhost' IDENTIFIED BY 'NEWPASSWORD';
4.3. Exit MySQL
exit;
Go back to the first terminal window and shutdown mysqld_safe
5.1. Press CTRL + Z
5.2. Run the following command
mysqladmin -u root -p shutdown
5.3. Enter the new password you set in 4.2. when prompted.
Start MySQL Server [see 1.]
If you forgot your password or want to change it to your MySQL:
Start your terminal and enter:
sudo su
Enter the password for you system
Stop your MySQL server:
sudo /usr/local/mysql/support-files/mysql.server stop
Leave this window open, run second terminal window and enter here:
mysql -u root
And change your password for MySQL:
UPDATE mysql.user SET authentication_string=PASSWORD('new_password') WHERE User='root';
where "new_password" - your new password. You don't need old password for MySQL.
Flush, quit and check your new password:
FLUSH PRIVILEGES;
Close all windows and check your new password for MySQL.
Much has changed for MySQL 8. I've found the following modification of the MySQL 8.0 "How to Reset the Root Password" documentation works with Mac OS X.
Create a temporary file, $HOME/mysql.root.txt, with the SQL to update the root password:
ALTER USER 'root'#'localhost' IDENTIFIED WITH mysql_native_password BY '<new-password>';
This uses mysql_native_password to avoid the Authentication plugin 'caching_sha2_password' cannot be loaded error, which I get if I omit the option.
Stop the server, start with an --init-file option to set the root password, and then restart the server:
mysql.server stop
mysql.server start --init-file=$HOME/mysql.root.txt
mysql.server stop
mysql.server start
mysqld_safe --skip-grant-tables
mysql -u root
UPDATE mysql.user SET authentication_string='yourpasswd' WHERE User='root';
FLUSH PRIVILEGES;
ALTER USER 'root'#'localhost' IDENTIFIED WITH caching_sha2_password BY 'yourpasswd';
I somehow need to do this every time my MacBook restarts.
$ export PATH=$PATH:/usr/local/mysql/bin
now,to make this permanent:
$ echo 'export PATH=$PATH:/usr/local/mysql/bin' >> ~/.bash_profile
next, start mysql in safe mode:
$ sudo mysqld_safe --skip-grant-tables;
If this does not work, go to System Preferences and stop MySQL server.
next, On the **other** terminal, you may use the below:
$ mysql -u root
mysql> USE mysql;
mysql> UPDATE mysql.user SET authentication_string=null WHERE
User='root';
mysql> FLUSH PRIVILEGES;
mysql> exit;
$ mysql -u root
mysql> ALTER USER 'root'#'localhost' IDENTIFIED WITH
caching_sha2_password BY 'yourpassword';
$ mysql -u root -p
Enter password:
mysql> SELECT user();
next, start the mysql server in normal mode. and you're done with resetting your root password. this worked for mysql 8.0.17 ver. for me.
thanks to everyone on top, https://stackoverflow.com/questions/36099028/error-1064-42000-you-have-an-error-in-your-sql-syntax-want-to-configure-a-pa,
https://www.houseninetytwo.com/how-to-use-mysql-in-terminal-on-mac-os-high-sierra/#:~:text=You%20may%20have%20gotten%20something,%2Fmysql%2Fbin%2Fmysql.&text=It%20should%20execute%20the%20right,return%20your%20version%20of%20MySQL.
Read more here.
As of Dec 2022, the following works for MySQL 8.0.26 on macOS Big Sur 11.2.3 :
Go to system preferences > mysql > stop server
Open terminal and run: mysqld_safe --skip-grant-tables
Open a new terminal and run: mysql -u root
Run: ALTER USER 'root'#'localhost' IDENTIFIED BY 'ROOT';
ROOT will be your new password.
Run: FLUSH PRIVILEGES;
Run: exit
Go to system preferences > mysql > start server