1、环境准备
一、配置防火墙，开启80端口、3306端口
CentOS 7.0默认使用的是firewall作为防火墙，这里改为iptables防火墙。
1、关闭firewall并安装iptables防火墙：
#停止firewall服务
systemctl stop firewalld.service
#禁止firewall开机启动
systemctl disable firewalld.service
#安装iptables防火墙
yum install iptables-services
#编辑防火墙配置文件
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -m state –state ESTABLISHED,RELATED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -m state –state NEW -m tcp -p tcp –dport 22 -j ACCEPT
-A INPUT -m state –state NEW -m tcp -p tcp –dport 80 -j ACCEPT
-A INPUT -m state –state NEW -m tcp -p tcp –dport 3306 -j ACCEPT
-A INPUT -j REJECT –reject-with icmp-host-prohibited
-A FORWARD -j REJECT –reject-with icmp-host-prohibited
COMMIT
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -m state –state ESTABLISHED,RELATED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -m state –state NEW -m tcp -p tcp –dport 22 -j ACCEPT
-A INPUT -m state –state NEW -m tcp -p tcp –dport 80 -j ACCEPT
-A INPUT -m state –state NEW -m tcp -p tcp –dport 3306 -j ACCEPT
-A INPUT -j REJECT –reject-with icmp-host-prohibited
-A FORWARD -j REJECT –reject-with icmp-host-prohibited
COMMIT
#最后重启防火墙使配置生效
systemctl restart iptables.service
#设置防火墙开机启动
systemctl enable iptables.service
2、安装apache
执行安装命令
yum install httpd
安装完成之后，打开浏览器，直接在浏览器访问服务器IP地址，如果网页能打开，说明已经安装成功了。
下面这些命令是apache服务器管理几个重要命令：
systemctl start httpd.service #启动apache
systemctl stop httpd.service #停止apache
systemctl restart httpd.service #重启apache
systemctl enable httpd.service #设置apache开机启动
systemctl stop httpd.service #停止apache
systemctl restart httpd.service #重启apache
systemctl enable httpd.service #设置apache开机启动
3、安装mysql
CentOS 7的yum源中貌似没有正常安装mysql时的mysql-sever文件，需要去官网上下载
输入如下命令开始下载
# wget http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm
输入下面命令开始解压
# rpm -ivh mysql-community-release-el7-5.noarch.rpm
输入下面的命令开始安装
# yum install mysql-community-server
成功安装之后重启mysql服务
# service mysqld restart
初次安装mysql是root账户是没有密码的 设置密码的方法是输入如下命令：
首先登录mysql
# mysql -urootmysql
输入命令设置密码，“mypasswd”请替换成您需要设置的新密码
set password for ‘root’@‘localhost’ = password(‘mypasswd’);
至此，mysql的安装已经完成。
4、安装php
执行以下命令进行php的安装
yum install php
安装完成之后，执行以下命令开始安装php常用的组件如mysql等等
yum install php-mysql php-gd libjpeg* php-ldap php-odbc php-pear php-xml php-xmlrpc php-mbstring php-bcmath php-mhash
最后，重新服务器使刚安装的组件生效，下面的命令重启mysql和apache
systemctl restart mysqld.service
systemctl restart httpd.service
systemctl restart httpd.service