一、下载地址
https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.19-1.el6.x86_64.rpm-bundle.tar
二、查询mariadb的版本号
rpm -qa|grep mariadb
如显示出：mariadb-libs-5.5.56-2.el7.x86_64，则说明系统使用的是该版本，可以对该版本进行卸载
三、卸载mariadb
sudo rpm -e mariadb-libs-5.5.56-2.el7.x86_64 --nodeps
四、解压mysql
tar xvf mysql-5.7.19-1.el6.x86_64.rpm-bundle.tar
五、安装mysql
建议按顺序安装：common --> libs --> clients --> server
m -ivh mysql-community-libs-compat-5.7.19-1.el6.x86_64.rpm --nodeps rpm -ivh mysql-community-common-5.7.19-1.el6.x86_64.rpm --nodeps rpm -ivh mysql-community-libs-5.7.19-1.el6.x86_64.rpm --nodeps rpm -ivh mysql-community-client-5.7.19-1.el6.x86_64.rpm --nodeps rpm -ivh mysql-community-server-5.7.19-1.el6.x86_64.rpm --nodeps# 查看mysql安装到哪里了 which mysqld
六、关闭防火墙
setenforce 0 systemctl stop firewalld.service systemctl disable firewalld.service
七、启动mysql
service mysqld start
八、查看root初始密码
more /var/log/mysqld.log |grep password
[Note] A temporary password is generated for root@localhost: OgoSH?xjg1hb
九、登录
mysql -uroot -p
十、修改密码规则以及修改密码
mysql>set global validate_password_length=4;
mysql>set global validate_password_policy=0;
mysql>set password = password('root');
十一、给任意IP授权
mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'root' WITH GRANT OPTION; mysql>FLUSH PRIVILEGES;