1.1. 介绍
主要用来记录mysql的安装，以及使用workbench连接。
1.2. 环境
阿里云 centos 8
1.3. 安装 MySql
- 运行以下命令更新YUM源。
rpm -Uvh https://dev.mysql.com/get/mysql57-community-release-el7-9.noarch.rpm - 运行以下命令安装MySQL。
yum module disable mysql #先禁止mysql，[参考](https://www.cnblogs.com/heyongboke/p/14034688.html) yum -y install mysql-community-server - 运行以下命令查看MySQL版本号。
mysql -V
1.4. 配置 MySQL
- 运行以下命令启动MySQL服务。
systemctl start mysqld - 运行以下命令设置MySQL服务开机自启动。
systemctl enable mysqld - 运行以下命令查看/var/log/mysqld.log文件，获取并记录root用户的初始密码。
grep 'temporary password' /var/log/mysqld.log - 执行命令结果示例如下。
2020-04-08T08:12:07.893939Z 1 [Note] A temporary password is generated for root@localhost: xvlo1lZs7>uI
1.5. 运行下列命令对 MySQL 进行安全性配置。
mysql_secure_installation
# 重置root用户的密码。
Enter password for user root: #输入上一步获取的root用户初始密码
The 'validate_password' plugin is installed on the server.
The subsequent steps will run with the existing configuration of the plugin.
Using existing password for root.
Estimated strength of the password: 100
Change the password for root ? ((Press y|Y for Yes, any other key for No) : Y #是否更改root用户密码，输入Y
New password: #输入新密码，长度为8至30个字符，必须同时包含大小写英文字母、数字和特殊符号。特殊符号可以是()` ~!@#$%^&*-+=|{}[]:;‘<>,.?/
Re-enter new password: #再次输入新密码
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 #是否继续操作，输入Y
# 删除匿名用户账号。
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 #是否删除匿名用户，输入Y
Success.
# 禁止root账号远程登录。
Disallow root login remotely? (Press y|Y for Yes, any other key for No) : Y #禁止root远程登录，输入Y
Success.
# 删除test库以及对test库的访问权限。
Remove test database and access to it? (Press y|Y for Yes, any other key for No) : Y #是否删除test库和对它的访问权限，输入Y
- Dropping test database...
Success.
# 重新加载授权表。
Reload privilege tables now? (Press y|Y for Yes, any other key for No) : Y #是否重新加载授权表，输入Y
Success.
All done!
1.6. 创建用户，并赋予权限
mysql -uroot -p
mysql> grant all on *.* to 'your_username'@'%' IDENTIFIED BY 'your_password'; #使用root替换dms，可设置为允许root账号远程登录。
mysql> flush privileges;