我已经在http://example.com上配置了主域，并且想将http://support.example.com与其他文件一起使用。
如何在UNIX或者Linux操作系统下为Lighttpd Web服务器添加子域支持？
您可以按照以下步骤设置lighttpd服务器：

• example.com将使用/home/lighttpd/example.com/http作为文档根目录
• support.example.com将使用/home/lighttpd/support.example.com/http作为文档根目录

两个域都可以指向相同的IP地址或者不同的IP地址。
编辑lighttpd.conf，执行：

# vi /etc/lighttpd/lighttpd.conf

更新/编辑如下：

server.modules              = (
                               "mod_redirect",
                               #"mod_alias",
                               "mod_rewrite",
                               "mod_expire",
                               "mod_access",
                               "mod_auth",
                               "mod_status",
                               "mod_fastcgi",
                               "mod_secdownload",
                               "mod_accesslog",
                               "mod_compress",
                               "mod_setenv",
                               "mod_proxy",
                               "mod_geoip"
)
 
server.errorlog            = "/var/log/lighttpd/error.log"
accesslog.filename         = "/var/log/lighttpd/access.log"
index-file.names            = ( "index.php", "index.html", "index.htm", "default.htm" )
server.tag                 = "lighttpd"
server.document-root = "/home/lighttpd/example.com/http"
server.username = "lighttpd"
server.groupname = "lighttpd"
server.port = "80"
server.bind = "192.54.1.1."  
 
###### Subdomain settings ##############
$HTTP["host"]  == "support.example.com"{
        server.document-root = "/home/lighttpd/support.example.com/http"
        accesslog.filename         = "/var/log/lighttpd/support.example.com/access.log"
}

保存并关闭文件。
创建子域所需的目录：

# mkdir -p /home/lighttpd/support.example.com/http
# mkdir /var/log/lighttpd/support.example.com/

重新加载或者重启lighttpd服务器：

# /etc/init.d/lighttpd reload

您现在可以在/home/lighttpd/support.example.com/http上将所有文件上传到http://support.example.com/