mysql is set as a network database, that is, remote access to mysql, modify the root password

1MySQL change the password

update mysql.user set password=password('newpassword') where user='root' #Change
the newpassword character in password() to your own password.

For example change it to 123456:
update mysql.user set password=password ('123456') where user='root'

2 mysql is set as a network database, that is, the

first method of remote access to mysql: directly enter the account name and password to enter the database. Find the user table of the mysql database, update the root user's Host directly, change Host: localhost, user: root to Host: %, user: root
and then mysql> flush privileges; (run this sentence to take effect, or restart MySQL). Because the permissions of mysql are all in the cache, it needs to be refreshed.
After changing to %, any IP can access the mysql server, which is very insecure. You can replace the % will with an IP address, that is, only allow access from that IP address.

The second method: directly enter the account name and password to enter the database.
mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'youpassword' WITH GRANT OPTION;
mysql> flush privileges;


The root user's authority is too large. It is recommended to create a new user and give it some authority to a database

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I used the first method.

MariaDB [mysql]> update user set host='%' where host='localhost' and user='root';
Query OK, 1 row affected (0.02 sec)
Rows matched: 1 Changed: 1 Warnings: 0

MariaDB [mysql] > flush privileges;
Query OK, 0 rows affected (0.00 sec)

MariaDB [mysql]> select * from user;

The database server can now be connected to the MySQL client.