mysql安装（5.7）
解压程序包
tar xf mysql-5.7.17-linux-glibc2.5-x86_64.tar.gz
mv mysql-5.7.17-linux-glibc2.5-x86_64 /application/ mysql-5.7.17
授权
chown -R mysql.mysql /application/mysql-5.7.17
初始化
/application/mysql-5.7.17/bin/mysqld --initialize --user=mysql --basedir=/application/mysql-5.7.17 --datadir=/application/mysql-5.7.17/data
记录初始密码（一定要记录）
A temporary password is generated for root@localhost: );xf/h%lm6iR
拷贝配置文件和启动文件
cp /application/mysql-5.7.17/support-files/my-default.cnf /etc/my.cnf
cp /application/mysql-5.7.17/support-files/mysql.server /etc/init.d/mysqld
修改启动文件内容
sed 's#/usr/local#/application#g' /application/mysql-5.7.17/bin/mysqld_safe /etc/init.d/mysqld -i
启动
/etc/init.d/mysqld start
修改root密码
mysqladmin -uroot -p password '123456'
