Several ways to modify the root password in ubuntu MySQL

View, modify MySQL user name and password

The first step:

Then you need to go into the/etc/mysql directory, then sudo vim/vi debian.cnf to view the username and password inside, then use the username and password in this file to enter MySQL, If the user name in DEBIAN.CNF is Debian-sys-maint, then:

Mysql-u Debian-sys-maint-p Press ENTER, you need to enter the password, copy the password in debian.cnf (do not enter manually, because it is prone to error).

Now you can get into MySQL.

Step Two:

Change person root password

Log in to the MySQL client as per the previous step

mysql> use MySQL;
Database changed
mysql> Update user Set Password=password (' New password ') where user= ' root '; "or: SET PASSWORD for ' root ' @ ' localhost ' = PASSWORD (' Newpass ');"
Query OK, 4 rows Affected (0.00 sec)
Rows matched:4  changed:4  warnings:0
mysql> flush Privileges;
Query OK, 0 rows Affected (0.00 sec)
Mysql> quit

Step Three:

Login with the newly changed root and password to view.

Multiple ways to modify the root password in Ubuntu