下载对应的rpm包:https://dev.mysql.com/downloads/repo/yum/
安装mysql源:yum localinstall mysql80-community-release-el7-2.noarch.rpm
检查 mysql 源是否安装成功:yum repolist enabled | grep?"mysql.*-community.*"
安装mysql:yum install -y mysql-community-server
检查mysql状态:systemctl status mysqld
systemctl daemon-reload
grep 'temporary password' /var/log/mysqld.log
使用默认密码登陆mysql:mysql -u root -p
修改root密码:ALTER USER 'root'@'localhost' IDENTIFIED BY '123456aB_';
flush privileges;
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