./scripts/mysql_install_db --user=mysql --datadir=/usr/local/mysql/data/mysql

如果执行报错

[root@dc1atmpapp12 mysql]# ./scripts/mysql_install_db --user=mysql --datadir=/usr/local/mysql/data/mysql FATAL ERROR: please install the following Perl modules before executing ./scripts/mysql_install_db: Data::Dumper

解决方法是安装autoconf库

执行命令：yum -y install autoconf

正确执行上面命令以后

cp support-files/mysql.server /etc/init.d/mysqld

chmod 755 /etc/init.d/mysqld

cp support-files/my-default.cnf /etc/my.cnf

2.4.修改启动脚本

vi /etc/init.d/mysqld

2.4.1修改项：

basedir=/usr/local/mysql/

datadir=/usr/local/mysql/data/mysql

2.5.启动服务

service mysqld start

2.6加入环境变量，编辑 /etc/profile，这样可以在任何地方用mysql命令了

export PATH=$PATH:/usr/local/mysql//bin

source /etc/profile

2.7.测试连接

./mysql/bin/mysql -uroot

2.8.启动mysql

service mysqld start

service mysqld status

2.9.创建用户修改root密码并授权

Mysql -uroot -p

set password=password('root');

FLUSH PRIVILEGES;

grant all privileges on *.* to root@"%" identified by 'root' with grant option;

FLUSH PRIVILEGES;