CentOS 6.5安装Apache、PHP 5.5、MySQL 5.5

配置防火墙，允许80端口通过防火墙（添加到默认的22端口规则的下面）
vi /etc/sysconfig/iptables
-A INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT
#memcached
-A INPUT -m state --state NEW -m tcp -p tcp --dport 11211 -j ACCEPT
/etc/init.d/iptables restart

rpm -Uvh http://mirror.webtatic.com/yum/el6/latest.rpm
yum install mysql.`uname -i` yum-plugin-replace
yum replace mysql --replace-with mysql55w
yum install mysql55w mysql55w-server
chkconfig --levels 235 mysqld on
/etc/init.d/mysqld start
mysql_secure_installation

yum install httpd
chkconfig --levels 235 httpd on
/etc/init.d/httpd start

rpm -Uvh http://mirror.webtatic.com/yum/el6/latest.rpm
yum remove php-common #如果以前安装过其他版本PHP，则需要执行此操作
yum install php55w
yum install php55w-mysql php55w-mysqli php55w-pdo php55w-mbstring php55w-gd php55w-intl php55w-mcrypt php55w-pecl-memcache php55w-pecl-apc php55w-pecl-zendopcache php55w-xml php55w-xmlrpc php55w-imap php55w-ldap php55w-odbc php55w-pear
php --version
/etc/init.d/httpd restart

yum install memcached
chkconfig --levels 235 memcached on
/etc/init.d/memcached start

设置VirtualHost：
vi /etc/httpd/conf.d/xxx.conf
<VirtualHost *:80>
    ServerName xxx.com
    DocumentRoot /var/www/html/xxx.com
    ErrorLog /var/log/xxx.com-error_log
    CustomLog /var/log/xxx.com-access_log common
</VirtualHost>

如果出现：
[warn] _default_ VirtualHost overlap on port 80, the first has precedence
则需将 /etc/httpd/conf/httpd.conf 中的
#NameVirtualHost *:80去掉注释

禁止IP直接访问，防止恶意解析：
vi /etc/httpd/conf.d/default.conf
<VirtualHost *:80>
    <Location />
        Order Allow,Deny
        Deny from all
    </Location>
</VirtualHost>

vi /etc/httpd/conf/httpd.conf
去除 Indexes。
隐藏系统版本：修改ServerTokens OS为ServerTokens Prod

vi /etc/php.ini
date.timezone = PRC
#禁止显示php版本的信息
expose_php = Off