# 日志文件路径 log-error       = /var/log/mysql/error.log

ALTER user 'root'@'localhost' IDENTIFIED BY 'Tinywan123456'

mysql> use mysql
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -ADatabase changed
mysql> create user user001@'localhost' identified by '112233';
Query OK, 0 rows affected (0.01 sec)mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)mysql> create user user002@'%' identified by '112233';
Query OK, 0 rows affected (0.01 sec)mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)

$ mysql -u user001 -p112233 -h 159.11.213.20
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 35
Server version: 8.0.12 MySQL Community Server - GPLCopyright (c) 2000, 2018, 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> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
+--------------------+
1 row in set (0.00 sec)mysql>

mysql -h localhost -uroot -pTinywan123456

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'password' PASSWORD EXPIRE NEVER;
Query OK, 0 rows affected (0.10 sec)

mysql> ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'password';
Query OK, 0 rows affected (0.35 sec)

mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.28 sec)