因为我们目前只有root，所以只能先用root登陆mysql，再新增用户：
$ bin/mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is
Server version: 5.7. MySQL Community Server (GPL) Copyright (c) , , 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> insert into mysql.user(Host,User,ssl_cipher,x509_issuer,x509_subject) values('localhost', 'wlf','','','');
Query OK, row affected (0.00 sec) mysql> flush privileges;
Query OK, rows affected (0.00 sec)
接着我们给新用户wlf设置密码：
mysql> set password for 'wlf'@'localhost' = password('wlf123');
Query OK, rows affected, warning (0.00 sec)
mysql> flush privileges;
Query OK, rows affected (0.00 sec)然后我们新建数据库，并给wlf用户赋予权限，登陆口令跟wlf的密码一致：
mysql> create database nacos_config;
Query OK, row affected (0.00 sec) mysql> grant all privileges on nacos_config.* to wlf@localhost identified by 'wlf123';
Query OK, rows affected, warning (0.00 sec) mysql> flush privileges;
Query OK, rows affected (0.00 sec)
用wlf登陆后查看数据库，发现nacos_config已经建好了
[wlf@zjhz-cmread-test188 mysql]$ bin/mysql -u wlf -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is
Server version: 5.7. MySQL Community Server (GPL) Copyright (c) , , 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 |
| nacos_config |
+--------------------+
rows in set (0.00 sec)