原始碼包安裝mysql5.1

shell> groupadd mysql

shell> useradd -g mysql mysql

shell> tar zxvf mysql-5.0.40.tar.gz

shell> cd mysql-5.0.40

shell> ./configure --prefix=/usr/local/mysql 

shell> make

shell> make install

shell> cp support-files/my-medium.cnf /etc/my.cnf

修改my.cnf的內容
[mysqld]
datadir=/usr/local/mysql/demo             -------編輯datadir的路徑
basedir=/usr/local/mysql
port            = 3306
socket          = /tmp/mysql.sock

shell> cd /usr/local/mysql

shell> bin/mysql_install_db --user=mysql   --datadir=/usr/local/mysql/demo    ----安裝初始資料庫

shell> chown -R root mysql

shell> chown -R mysql :mysql   demo

shell>cp    ******/mysql.server  /etc/init.d/mysql       -----方便啟動mysqld服務

shell> /etc/init.d/mysql   start     

-----mysq沒密碼可以這樣解決

# /etc/init.d/mysql stop
# mysqld_safe --user=mysql --skip-grant-tables --skip-networking &
# mysql -u root mysql
mysql> UPDATE user SET Password=PASSWORD(’newpassword’) where USER=’root’;
mysql> FLUSH PRIVILEGES;
mysql> quit
# /etc/init.d/mysql restart
# mysql -uroot -p
Enter password: