[root@localhost ~]# vim /usr/local/apache2/conf/httpd.conf
<IfModule log_config_module>    LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined  # 默认已定义好的日志格式，combined 是日志格式名    LogFormat "%h %l %u %t \"%r\" %>s %b" common                                       # 默认已定义好的日志格式，common 是日志格式名</IfModule>

[root@localhost ~]# vim /usr/local/apache2/conf/extra/httpd-vhosts.conf<VirtualHost *:80>    DocumentRoot "/data/www"    ServerName www.test.com    ErrorLog "logs/test.com_error_log"                   CustomLog "logs/test.com_access_log" combined    # 这里应用 combined 格式的日志</VirtualHost>

[root@localhost ~]# /usr/local/apache2/bin/apachectl -t[root@localhost ~]# /usr/local/apache2/bin/apachectl graceful[root@localhost ~]# ls /usr/local/apache2/logs/    # 生成如下两个日志access_log  error_log  httpd.pid  test.com_access_log  test.com_error_log