1、卸载命令:# rpm -qa |grep -i mysql
# yum remove mysql-community mysql-community-server mysql-community-libs mysql-community-common
2、安装:# wget http://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm
# yum localinstall mysql57-community-release-el7-8.noarch.rpm
# yum install mysql-community-server
3、启动 :# systemctl start mysqld
重启:# systemctl restart mysqld
关闭:# systemctl stop mysqld
设置开机自启 # systemctl enable mysqld
# systemctl daemon-reload
4、查看默认密码:# grep 'temporary password' /var/log/mysqld.log
注:可修改密码策略(不然密码需要包括大小写、数字、特殊符号)
# vim /etc/my.cnf
添加:validate_password = off
# systemctl restart mysqld
5、登录:# mysql -uroot -p
修改密码:mysql> set password for 'root'@'localhost'=password('123123');
添加远程账号:mysql> GRANT ALL PRIVILEGES ON *.* TO 'home'@'%' IDENTIFIED BY '123123' WITH GRANT OPTION;
7、配置默认编码utf-8:# vim /etc/my.cnf
添加: character_set_server=utf8
init_connect='SET NAMES utf8'
8、默认配置文件路径:
配置文件:/etc/my.cnf
日志文件:/var/log//var/log/mysqld.log
服务启动脚本:/usr/lib/systemd/system/mysqld.service
socket文件:/var/run/mysqld/mysqld.pid