cd /usr/local/
tar -zxvf mysql-5.7.27-el7-x86_64.tar.gz
mv mysql-5.7.27-el7-x86_64 mysql
groupadd mysql
useradd -r -g mysql mysql
groups mysql
mkdir /usr/local/mysql/data
chown -R mysql:mysql /usr/local/mysql
chmod -R 755 /usr/local/mysql
cd /usr/local/mysql/bin
./mysqld --defaults-file=/etc/my.cnf --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --user=mysql --initialize
/usr/local/mysql/support-files/mysql.server start
ln -s /usr/local/mysql/support-files/mysql.server /etc/init.d/mysql
ln -s /usr/local/mysql/bin/mysql /usr/bin/mysql
service mysql restart
mysql -u root -p"+RceJiHfg7(k"