我正在使用Liferay 6.2 EE和Apache Tomcat 7.我不得不重新IP我的服务器，现在每当我点击我的Liferay门户网站时，我都会收到404页面找不到错误。我重新启动了Apache httpd并重新启动了Apache Tomcat 7.两者都启动并运行。我的猜测是Apache httpd无法将我的请求重定向到Tomcat。我的初始配置工作正常，除了重新IP服务器之外，我还没有改变任何配置。我的server.xml，worker.properties和httpd.conf文件保持不变。我的mod_jk模块已加载，我在mod_jk.log文件中收到的错误是这样的：
[info] Connect to 127.0.0.1:8009 failed
[info] Failed opening socket to (127.0.0.1:8009)
[error] connecting to backend failed. Tomcat is probably not started or is listening on the wrong port
[info] (liferay) sending request to tomcat failed (recoverable), because of error during request sending
[error] (liferay) connecting to tomcat failed
为什么重新ping服务器，但保持配置相同的任何想法会导致这样的事情？