1.下载MySQL mysql-5.7.24-1.el7.x86_64.rpm-bundle.tar

链接：https://pan.baidu.com/s/1o1ZSVPKtA3xj2jEw0HlIQQ
提取码：2fwi

2.在/usr创建文件夹

mkdir mysql

3.解压

tar -xvf mysql-5.7.24-1.el7.x86_64.rpm-bundle.tar -C mysql

4.安装

cd mysql 
rm -f mysql-community-server-minimal-5.7.24-1.el7.x86_64.rpm 
yum install mysql-community-{server,client,common,libs}-* mysql-5.*

5.启动

systemctl start mysqld

6.获取零时密码

grep 'temporary password' /var/log/mysqld.log

7.修改root用户密码，用上面提取到的密码登录：

mysql -uroot -p

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass4!';

8.创建使用用户

mysql> grant all privileges on *.* to 'mike'@'%' identified by 'Mike666!';

mysql> flush privileges;

9.对数据库授权

mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION;

10.FirewallD防火墙开放3306端口

firewall-cmd --zone=public --add-port=3306/tcp --permanent

11.连接

12.本人安装过程的错误集

1.Linux：useradd: group ‘mysql’ does not exist

解决措施：

groupadd mysql

useradd -r -g mysql mysql

查看用户组# groups mysql

查看是否存在mysql
rpm -qa |grep -i mysql

2.执行systemctl start mariadb.service后终端控制台报如下错误：

Job for mariadb.service failed because the control process exited with error code. See “systemctl status mariadb.service” and “journalctl -xe” for details.

解决方法如下：

cp /usr/share/mysql/my-huge.cnf /etc/my.cnf
cp: overwrite ‘/etc/my.cnf’? y

之后执行

systemctl start mariadb.service

mariadb服务启动成功

3.unknown variable ‘thread_concurrency=8’

vi /etc/my.cn

注释掉thread_concurrency=8

4.安装mysql后在/var/log/mysqld.log 中找不到临时密码

1.删除原来安装过的mysql残留的数据（这一步非常重要，问题就出在这）

rm -rf /var/lib/mysql

2.重启mysqld服务

systemctl restart mysqld

3.再去找临时密码

grep 'temporary password' /var/log/mysqld.log

参考链接：防火墙配置
获取不到临时密码