说明：
Apache版本：httpd-2.2.31
Apache安装目录：/usr/local/apache
目的：
配置Apache虚拟主机
具体操作：
1、修改Apache主配置文件
cp /usr/local/apache/conf/httpd.conf /usr/local/apache/conf/httpd.conf-bak #修改之前先备份
vi /usr/local/apache/conf/httpd.conf #修改
找到# Virtual hosts这一行，添加以下两行：
Include conf/error/*.conf
Include conf/vhost/*.conf
找到# Server-pool management (MPM specific)这一行，取消下面一行的注释
Include conf/extra/httpd-mpm.conf
找到#ErrorDocument 404 /404.html这一行，取消前面的注释
ErrorDocument 404 /404.html #404.html需要创建好放在网站根目录下面
找到# ErrorLog: The location of the error log file.这一段，添加
ErrorLog "/usr/local/apache/logs/error_log" #Apache错误日志记录，需要创建好目录文件
#ErrorLog "/dev/null" #表示不记录Apache错误日志
LogLevel crit #日志级别，致命情况才记录
找到# The location and format of the access logfile (Common Logfile Format).这一段，添加
CustomLog "|/usr/local/apache/bin/rotatelogs /usr/local/apache/logs/access_log%Y%m%d.log 86400 480" combined #按天保存Apache访问日志记录
:wq! #保存退出
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2、创建虚拟主机配置文件存放目录
cd /usr/local/apache/conf
mkdir vhost #创建虚拟主机存放目录
mkdir error #创建空主机头存放目录
3、禁止Apache空主机头设置
cd /usr/local/apache/conf/error
vi error.osyunwei.com.conf #编辑
NameVirtualHost *:80
<VirtualHost *:80>
ServerAdmin yourmail@mail.com
DocumentRoot /tmp
ServerName error
</VirtualHost>
:wq! #保存退出
4、添加虚拟主机配置文件
cd /usr/local/apache/conf/vhost
vi bbs.osyunwei.com.conf #编辑
<VirtualHost *:80>
# ServerAdmin webmaster@dummy-host.example.com
DocumentRoot /home/web/osyunwi.com/bbs.osyunwei.com/
ServerName bbs.osyunwei.com
ServerAlias bbs.osyunwei.com
# ErrorLog logs/dummy-host.example.com-error_log
# CustomLog logs/dummy-host.example.com-access_log common
CustomLog "|/usr/local/apache/bin/rotatelogs /usr/local/apache/logs/osyunwei.com/bbs.osyunwei.com/access_log%Y%m%d.log 86400 480" combined #访问日志，目录文件需要提前创建好
DirectoryIndex index.htm index.html index.php
<Directory "/home/web/osyunwi.com/bbs.osyunwei.com/">
php_admin_value open_basedir "/home/web/osyunwi.com/bbs.osyunwei.com/:/tmp/" #防止php木马跨站
Options Includes ExecCGI FollowSymLinks
AllowOverride All
Order allow,deny
Allow from all
</Directory>
</VirtualHost>
:wq! #保存退出
vi sns.osyunwei.com.conf #编辑
<VirtualHost *:80>
# ServerAdmin webmaster@dummy-host.example.com
DocumentRoot /home/web/osyunwi.com/sns.osyunwei.com/
ServerName sns.osyunwei.com
ServerAlias sns.osyunwei.com
# ErrorLog logs/dummy-host.example.com-error_log
# CustomLog logs/dummy-host.example.com-access_log common
CustomLog "|/usr/local/apache/bin/rotatelogs /usr/local/apache/logs/osyunwei.com/sns.osyunwei.com/access_log%Y%m%d.log 86400 480" combined #访问日志，目录文件需要提前创建好
DirectoryIndex index.htm index.html index.php
<Directory "/home/web/osyunwi.com/sns.osyunwei.com/">
php_admin_value open_basedir "/home/web/osyunwi.com/sns.osyunwei.com/:/tmp/" #防止php木马跨站
Options Includes ExecCGI FollowSymLinks
AllowOverride All
Order allow,deny
Allow from all
</Directory>
</VirtualHost>
:wq! #保存退出
5、重启Apache
service httpd restart #重启
至此，Linux下Apache虚拟主机配置教程完成。