一.准备环境
1.安装gcc
[root@localhost /]# yum install gcc gcc-c++
2.安装apr,apr-util
下载apr-1.4.6.tar.gz与apr-util-1.5.1.tar.gz，
地址：http://apr.apache.org
上传至/usr/local，
安装目录分别为/usr/local/apr 与/usr/local/apr-util
a.安装apr-1.4.6.tar.gz
[root@localhost local]# mkdir -p apr
[root@localhost local]# tar -zxf apr-1.4.6.tar.gz
[root@localhost local]# cd apr-1.4.6
[root@yahoo apr-1.4.6]# ./configure --prefix=/usr/local/apr
[root@yahoo apr-1.4.6]# make
[root@yahoo apr-1.4.6]# make install
b.安装apr-util-1.5.1.tar.gz
[root@localhost local]# mkdir -p apr-util
[root@localhost local]# tar -zxf apr-util-1.5.1.tar.gz
[root@localhost local]# cd apr-util-1.5.1
[root@yahoo apr-util-1.5.1]# ./configure --prefix=/usr/local/apr-util
--with-apr=/usr/local/apr/bin/apr-1-config
[root@yahoo apr-util-1.5.1]# make
[root@yahoo apr-util-1.5.1]# make install
3.安装pcre-8.20.tar.gz
下载地址：http://sourceforge.net/projects/pcre/files/pcre/ ，
上传至/usr/local，
安装目录为/usr/local/pcre[root@localhost local]# mkdir -p pcre[root@localhost local]# tar -zxf pcre-8.20.tar.gz[root@localhost local]# cd pcre-8.20[root@yahoo pcre-8.20]# ./configure --prefix=/usr/local/pcre[root@yahoo pcre-8.20]# make[root@yahoo pcre-8.20]# make install
二.安装apache
1.下载httpd-2.4.3.tar.gz，
地址是：http://httpd.apache.org/ ，
上传至/usr/local，
安装目录为/usr/local/apache2
2.安装
[root@localhost local]# mkdir -p /usr/local/apache2
[root@localhost local]# tar zxvf httpd-2.4.3.tar.gz
[root@localhost local]# cd httpd-2.4.3
[root@localhost httpd-2.4.3]# ./configure --prefix=/usr/local/apache2
--with-pcre=/usr/local/pcre
--with-apr=/usr/local/apr
--with-apr-util=/usr/local/apr-util
[root@localhost httpd-2.4.3]# make
[root@localhost httpd-2.4.3]# make install
用浏览器访问http:localhost，看到It works!，说明CentOS Apache安装成功了，恭喜您！
3.启动第一种方法
[root@localhost apache2]# /usr/local/apache2/bin/apachectl start
第二种方法
[root@localhost apache2]#service httpd start
第三种方法
[root@localhost apache2]#/etc/init.d/httpd start
第三种方法：
[root@localhost httpd-2.4.43]# sysytemctl start httpd
三.安装出现的问题.
1.configure: error: no acceptable cc found in $PATH
解决办法：yum install gcc gcc-c++
2.configure: error: APR not found. Please read the documentation.
解决方法：安装Apache的关联软件如上安装apr-1.4.6.tar.gz
3.configure: error: APR-util not found. Please read the documentation
解决方法：安装apr-util如上安装apr-util-1.5.1.tar.gz
4.configure: error: APR version 1.3.0 or later is required
主要是因为apr版本过低造成的，应该卸载相关旧版本
5. 启动时报错：AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1. Set the 'ServerName' directive globally to suppress this message
解救办法：绝对路径即可：/usr/local/apache2/bin/apachectl start
6.AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using localhost.localdomain. Set the 'ServerName' directive globally to suppress this message98)Address already in use: AH00072: make_sock: could not bind to address [::]:80(98)Address already in use: AH00072: make_sock: could not bind to address 0.0.0.0:80no listening sockets available, shutting downAH00015: Unable to open logs
解救办法：端口被占用：停止之前的服务或占用端口的服务，再次执行启动即可
四.重要配置文件目录/etc/httpd/conf/httpd.conf
[root@localhost httpd-2.4.43]# sysytemctl stop httpd
最主要的配置文件
/usr/lib/httpd/modules:apache
支持很多的模块，所以你想要使用的模块默认都放置在此目录/var/log/httpd
apache默认的log/var/www/html
cenos默认的首页所在目录
五.配置apache
最后修改httpd.conf，
使apache能使用php增加如下参数
AddType application/x-httpd-php .php
AddType application/x-httpd-php-source .phps
AddType image/x-icon .ico
DirectoryIndex index.php index.html index.html.var