本文为大家介绍一下centos6.2下安装与配置mysql5.5的实例，供大家学习参考。
一、安装cmake
# 安装所需依赖包
yum -y install gcc libxml2-dev curl screen
libpng12-dev autoconf libpcre3-dev make bzip2
libevent-dev patch libjpeg62-dev libcurl4-openssl-dev
libfreetype6-dev g++ libtool libncurses5-dev psmisc lrzsz openssl* bison ncurses*
# 下载文件
wget http://www.cmake.org/files/v2.8/cmake-2.8.5.tar.gz
# 编译安装
tar zxvf cmake-2.8.5.tar.gz
cd cmake-2.8.5
./boostarp
make
make install
cmake –version
二、 安装配置mysql
# 下载源文件
wget http://dev.mysql.com/get/Downloads/MySQL-5.5/mysql-5.5.17.tar.gz/from/ftp://ftp.ntu.edu.tw/pub/MySQL/
# 或
wget ftp://ftp.ntu.edu.tw/pub/MySQL/Downloads/MySQL-5.5/mysql-5.5.17.tar.gz
# 创建用户和组
groupadd mysql
useradd -g mysql -s /usr/sbin/nologin mysql
# 创建安装目录
mkdir /usr/local/ mysql
# 创建数据库目录
mkdir /usr/local/ mysql/data
# 解压
tar -zxvf mysql-5.5.17.tar.gz
cd mysql-5.5.17
# 编译及安装mysql
# cmake编译：
cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql
-DMYSQL_DATADIR=/usr/local/mysql/data
-DDEFAULT_CHARSET=utf8
-DDEFAULT_COLLATION=utf8_unicode_ci
-DWITH_READLINE=1
-DWITH_SSL=system
-DWITH_EMBEDDED_SERVER=1
-DENABLED_LOCAL_INFILE=1
-DDEFAULT_COLLATION=utf8_general_ci
-DWITH_myisam_STORAGE_ENGINE=1
-DWITH_INNOBASE_STORAGE_ENGINE=1
-DWITH_DEBUG=0
# 安装mysql
make && make install
# 复制配置文件
cp support-files/my-medium.cnf /etc/my.cnf
# 设置权限
chmod +x /usr/local/mysql
chown -R mysql.mysql /usr/local/mysql
chown -R mysql:mysql /usr/local/mysql/data
# 配置开机自启动
cp support-files/mysql.server /etc/init.d/mysqld
chmod +x /etc/init.d/mysqld
chkconfig –add mysqld
chkconfg mysqld on
# 修改my.cnf配置
vim /etc/my.cnf
# [mysqld] 添加：
datadir=/usr/local/mysql/data
default-storage-engine=MyISAM
# 以下可选：
log-error =/usr/local/mysql/data/error.log
pid-file = /usr/local/mysql/data/mysql.pid
user = mysql
tmpdir = /tmp
# 初始化数据库
/usr/local/mysql/scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data &
# 启动MySQL
/usr/local/mysql/bin/mysqld_safe –defaults-file=/etc/my.cnf &
或者：
/etc/init.d/mysql start （service mysql start）
# 测试MySQL是否启动
# 1）查看是否有进程mysql
ps -ef | grep mysql
# 2）查看端口是否运行
netstat -tnl | grep 3306
# 3）读取mysql版本信息
/usr/local/mysql/bin/mysqladmin version
# 4 ) 设置root密码
mysqladmin -uroot password '123456'
# 至此，MySQL安装完成