下载
wget https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm
安装 mysql 源
yum localinstall mysql57-community-release-el7-11.noarch.rpm
检查 mysql 源是否安装成功，如果没找到需要更新一下软件包yum update
yum repolist enabled | grep "mysql.-community."
安装mysql
yum install -y mysql-community-server
启动mysql
systemctl start mysqld
查询mysql状态
systemctl status mysqld
查看默认的root密码
grep 'temporary password' /var/log/mysqld.log
用默认密码登录后修改密码
mysql -uroot -p
ALTER USER 'root'@'localhost' IDENTIFIED BY 'guogr@1234#';
重启mysql
systemctl restart mysqld
设置连接编码
set names utf8;
设置全局编码，文件路径/etc/my.cnf
[mysqld]
character-set-server=utf8
[client]
default-character-set=utf8
[mysql]
default-character-set=utf8
重启
systemctl restart mysqld
查看编码
show variables like 'character%';
更多
配置文件：/etc/my.cnf
日志文件：/var/log/mysqld.log
服务启动脚本：/usr/lib/systemd/system/mysqld.service
socket文件：/var/run/mysqld/mysqld.pid
