MySQL安装客户端

yum install mysql

MySQL安装服务端

yum install mysql-server
yum install mysql-devel

MySQL启动、停止、重启、查看状态、开机自启

systemctl start mysqld
systemctl stop mysqld
systemctl restart mysqld
systemctl status mysqld
systemctl enable --now mysqld

查看监听的端口

netstat -lnpt
//PS:CentOS默认没有netstat命令，需要安装net-tools工具，yum install -y net-tools

打开MySQL命令行

mysql -uroot -p

修改MySQL密码

use mysql; //应用mysql数据库
update user set authentication_string='' where user='root'; //将字段置空
alter user 'root'@'localhost' identified by 'root'; //修改密码为root
flush privileges; //将当前user和privilige表中的用户信息，权限设置从mysql库(MySQL数据库的内置库)中提取到内存里