Tomcat的重定向到维护页面时下降

我使用的tomcat6与ubuntu9.10 mod_jk的设置（在80端口都在运行）和8.10服务器。我部署在/ usr /共享/ tomcat的/ webapps中的战争文件。在部署期间，我重新启动Tomcat，我会当tomcat的应用程序在浏览器访问进入以下页面：

I'm using tomcat6 with mod_jk setup(both running at port 80) on ubuntu9.10 and 8.10 servers. I deploy war files under /usr/share/tomcat/webapps. During deployment, as I restart the tomcat, I will get the following page when the tomcat application is accessed on the browser:

Service Temporarily Unavailable

The server is temporarily unable to service your request due to maintenance downtime or capacity problems. Please try again later.
Apache/2.2.11 (Ubuntu) mod_jk/1.2.15 Server at 192.168.2.54 Port 80

我

怎么可能这个网页重定向到其他一些自创建维护页面，而Tomcat服务器宕机？

How could I redirect this page to some other self created maintenance page while the tomcat server is down?.