MySQL 5.5.27安装与以往的MySQL有些不同，如下：
1、下载cmake
 tar
 ./configure
 make && make install
2、groupadd mysql
 useradd -g mysql mysql
 mkdir -pv /usr/local/mysql/data
3、tar mysql
 cd
 cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql - DMYSQL_DATADIR=/usr/local/mysql/data
 make && make install
 chown -R mysql:mysql /usr/local/mysql
 cp mysql-5.5.27/mysql.server /etc/init.d/mysqld
 chmod a x /etc/init.d/mysqld
 chkconfig --add mysqld
 chkconfig --level 35 mysqld on
 cp support-files/my-medium.cnf /etc/my.cnf
 cd /usr/local/mysql
 scripts/mysql_install_db --user=mysql
 service mysqld start
 netstat -nltp | grep :3306
 /usr/local/mysql/bin/mysql -uroot -p

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