Estimated strength of the password: 100
Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : y 确认修改
By default, a MySQL installation has an anonymous user,
allowing anyone to log into MySQL without having to have
a user account created for them. This is intended only for
testing, and to make the installation go a bit smoother.
You should remove them before moving into a production
environment.
Remove anonymous users? (Press y|Y for Yes, any other key for No) : y 移除匿名用户
Success.
Normally, root should only be allowed to connect from
'localhost'. This ensures that someone cannot guess at
the root password from the network.
Disallow root login remotely? (Press y|Y for Yes, any other key for No) : y 不允许root远程登录
Success.
By default, MySQL comes with a database named 'test' that
anyone can access. This is also intended only for testing,
and should be removed before moving into a production
environment.
Remove test database and access to it? (Press y|Y for Yes, any other key for No) : y 删除测试数据库
- Dropping test database...
Success.
- Removing privileges on test database...
Success.
Reloading the privilege tables will ensure that all changes
made so far will take effect immediately.
Reload privilege tables now? (Press y|Y for Yes, any other key for No) : y 刷新权限表
Success.
All done!
说明：MySQL服务要求密码强度及复杂的都十分严格，如果需要使用简单密码可以修改系统配置文件/etc/my.cnf 加入validate_password=off 然后重启mysql服务进行修改就可以使用简单密码（以上步骤主从服务器均要执行）
步骤四、登录MySQL主服务器，创建一个测试数据库及表，并创建一个授权账号进行主从数据同步
[root@mysqlmaster ~]# mysql -uroot -p'zX@987Weqqrd1' 使用新密码登录mysql
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 6
Server version: 5.7.20 MySQL Community Server (GPL)
Copyright (c) 2000, 2017, 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>
mysql> show databases; 查看当前数据库
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
+--------------------+
4 rows in set (0.00 sec)
mysql> create database test; 创建一个名为test的数据库
Query OK, 1 row affected (0.00 sec)
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
| test | 新建数据库
+--------------------+
5 rows in set (0.00 sec)
mysql> use test; 切换到test数据库
Database changed
mysql> show tables; 查询当前数据库表
Empty set (0.00 sec)
mysql> create table test1(id int,name varchar(20)); 创建一个测试表
Query OK, 0 rows affected (0.03 sec)