wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.19-1.el7.x86_64.rpm-bundle.tar

tar zxvf mysql-5.7.19-1.el7.x86_64.rpm-bundle.tar

#将 mysql 和 mariadb 相关的包卸载干净rpm -qa|grep * #查询包rpm -e *#卸载rpm -e --nodeps *

rpm -ivh mysql-community-libs-5.7.19-1.el7.x86_64.rpmrpm -ivh mysql-community-libs-5.7.19-1.el7.x86_64.rpmrpm -ivh mysql-community-client-5.7.19-1.el7.x86_64.rpmrpm -ivh mysql-community-server-5.7.19-1.el7.x86_64.rpm

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#默认密码/var/log/mysqld.log#初始化mysqld --initialize#将mysql数据库目录的所属用户及其所属组，然后启动mysql数据库chown mysql:mysql /var/lib/mysql -Rsystemctl start mysqld.service #mysql -uroot -p