我在 Ubuntu 上运行 Apache，它工作得很好。但是，如果我发出“shutdown -r now”并等到服务器成功启动，则该网站将不会显示在浏览器中。然后，如果我发出： service apache2 start，它将显示：
[Thu Jun 14 11:08:38 2012] [error] (EAI 2)Name or service not known: Could not resolve host name *.443 -- ignoring!
[Thu Jun 14 11:08:38 2012] [warn] The ScriptAlias directive in /etc/apache2/sites-enabled/default2 at line 18 will probably never match because it overlaps an earlier ScriptAlias.
[Thu Jun 14 11:08:38 2012] [warn] The Alias directive in /etc/apache2/sites-enabled/default2 at line 34 will probably never match because it overlaps an earlier Alias.
[Thu Jun 14 11:08:38 2012] [warn] _default_ VirtualHost overlap on port 443, the first has precedence
(98)Address already in use: make_sock: could not bind to address [::]:80
(98)Address already in use: make_sock: could not bind to address 0.0.0.0:80
no listening sockets available, shutting down
Unable to open logs
Action 'start' failed.
The Apache error log may have more information.
* Starting web server apache2 FAIL
但是，当我发出 service apache2 stop 时，它会显示：
[Thu Jun 14 11:09:34 2012] [error] (EAI 2)Name or service not known: Could not resolve host name *.443 -- ignoring!
[Thu Jun 14 11:09:34 2012] [warn] The ScriptAlias directive in /etc/apache2/sites-enabled/default2 at line 18 will probably never match because it overlaps an earlier ScriptAlias.
[Thu Jun 14 11:09:34 2012] [warn] The Alias directive in /etc/apache2/sites-enabled/default2 at line 34 will probably never match because it overlaps an earlier Alias.
[Thu Jun 14 11:09:34 2012] [warn] _default_ VirtualHost overlap on port 443, the first has precedence
* Stopping web server apache2 OK
但是，之后 netstat -tulpn| grep :80 仍然显示：
tcp6 0 0 :::80 :::* LISTEN 23561/apache2
无论如何，当我杀死上面显示的进程时，例如，kill -9 23561，我可以使用 service apache2 start 成功启动 apache2 并在浏览器中再次看到我的网站。所以，对我来说，看起来有另一个 apache2 正在运行，它使用完全不同的配置。顺便说一句，我已经保证我只有一个 apache2 安装。你能帮我解决这个问题吗？提前谢谢了！！！:-)