centos安装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
yum -y install mysql-community-server
启动
systemctl start mysqld.service
得到密码
grep "password" /var/log/mysqld.log
mysql -uroot -p
改密码
ALTER USER 'root'@'localhost' IDENTIFIED BY 'new password';
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'youpassword' WITH GRANT OPTION;
flush privileges;
exit
firewall-cmd --zone=public --add-port=3306/tcp --permanent
firewall-cmd --reload