安装MySQL

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安装mysql vim /etc/yum.repos.d/mysql-community.repo   [mysql57-community] name=MySQL 5.7 Community Server baseurl=http://repo.mysql.com/yum/mysql-5.7-community/el/7/$basearch/ enabled=1 gpgcheck=0 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql     wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm   yum -y install mysql57-community-release-el7-10.noarch.rpm   systemctl start  mysqld.service   grep "password" /var/log/mysqld.log   mysql -uroot -p   mysql> set global validate_password_policy=0; mysql> set global validate_password_length=1; mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY '123456';   yum -y remove mysql57-community-release-el7-10.noarch