安裝Mysql的命令：
wget http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm
rpm -ivh mysql-community-release-el7-5.noarch.rpm
yum install mysql-community-server
安裝完之后重啟一下mysql服務(wù)：
?service mysqld restart
會輸出：Redirecting to /bin/systemctl restart ?mysqld.service
連接Mysql：
mysql
此時直接連接mysql即可，msyql默認(rèn)密碼為空，需要自己設(shè)置密碼
設(shè)置Mysql密碼：
set password for 'root'@'localhost' = password('xxx');
遠(yuǎn)程連接Mysql：
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'root' WITH GRANT OPTION;
flush privileges;
