cd /usr/local/mysql
mkdir data

---新建一个msyql组
groupadd mysql

useradd -r -s /sbin/nologin -g mysql mysql -d /usr/local/mysql 

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

bin/mysql_ssl_rsa_setup
 --datadir=/usr/local/mysql/data

cd /usr/local/mysql/support-files

[mysqld]
user = mysql
port = 3306
server_id = 1
socket=/tmp/mysql.sock
basedir =/usr/local/mysql
datadir =/usr/local/mysql/data
character-set-server=utf8
[client]
socket=/tmp/mysql.sock

--复制一下两个文件cp
 my-default.cnf /etc/my.cnf
cp mysql.server /etc/init.d/mysqld
chmod
 755 /etc/init.d/mysqld 
vim /etc/init.d/mysql

basedir
 =/usr/local/mysqldatadir =/usr/local/mysql/data

/etc/init.d/mysqld
 start 或service mysqld start
mysql -uroot -p
　　--如果出现：-bash: mysql: command not found
　　--就执行： # ln -s /usr/local/mysql/bin/mysql /usr/bin --没有出现就

--修改密码
mysql> set password=password('root');
--设置root账户的host地址（修改了才可以远程连接）
mysql>grant all privileges on *.* to 'root'@'%' identified by 'root' 
with grant option ; 
mysql>flush privileges;