rpm -ivh mysql-community-common-5.7.22-1.el7.x86_64.rpm mysql-community-libs-5.7.22-1.el7.x86_64.rpm

rpm -ivh mysql-community-client-5.7.22-1.el7.x86_64.rpm  mysql-community-server-5.7.22-1.el7.x86_64.rpm

mysqld --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data/  --initialize

service mysqld start

grep 'temporary password' /var/log/mysqld.log

mysql -uroot -p

ALTER USER 'root'@'localhost' IDENTIFIED BY 'cffEx2016!';

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'cffEx2016!' WITH GRANT OPTION;

拷贝my.cnf到/etc/目录下

my.cnf 权限为-rw-r--r--

重启mysql