转载自 https://www.cnblogs.com/caoxb/p/9405323.html
看到很多文章安装都出现问题,这个亲测可行!

CentOS7 安装mysql(YUM方式)
1.下载mysql源安装包

shell> wget http://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm

2.安装mysql源
shell> yum localinstall mysql57-community-release-el7-8.noarch.rpm

3.检查mysql源是否安装成功
shell> yum repolist enabled | grep “mysql.-community.

4.修改 vim /etc/yum.repos.d/mysql-community.repo源 ,改变默认安装的mysql版本。比如要安装5.6版本,将5.7源的enabled=1改成enabled=0。然后再将5.6源的enabled=0改成enabled=1即可。

5.安装MySQL
shell> yum install mysql-community-server

6.启动MySQL服务
shell> systemctl start mysqld

7.开机启动
shell> systemctl enable mysqld
shell> systemctl daemon-reload

8.修改root本地登录密码
1)查看mysql密码
shell> grep ‘temporary password’ /var/log/mysqld.log

2)连接mysql
shell> mysql -uroot -p
3)修改密码[注意:后面的分号一定要跟上]
mysql> ALTER USER ‘root’@‘localhost’ IDENTIFIED BY ‘MyNewPass4!’;
或者:
mysql> set password for ‘root’@‘localhost’=password(‘MyNewPass4!’);

mysql> show variables like ‘%password%’;

9.添加远程登录用户
mysql> GRANT ALL PRIVILEGES ON . TO ‘caoxiaobo’@’%’ IDENTIFIED BY ‘Caoxiaobo0917!’ WITH GRANT OPTION;

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