得到503错误，但Apache日志似乎没有提供任何线索

Question

每当我尝试请求任何页面时，我都会收到503错误。我真的不知道如何解决这个问题。我检查了error.log，这是它包含的内容：

[Fri Jan 13 19:03:41 2012] [notice] caught SIGWINCH, shutting down gracefully
[Fri Jan 13 19:03:51 2012] [notice] Apache/2.2.8 (Ubuntu) PHP/5.2.4-2ubuntu5.17 with     Suhosin-Patch configured -- resuming normal operations
[Fri Jan 13 19:08:59 2012] [notice] caught SIGWINCH, shutting down gracefully
[Fri Jan 13 19:09:41 2012] [notice] Apache/2.2.8 (Ubuntu) PHP/5.2.4-2ubuntu5.17 with Suhosin-Patch configured -- resuming normal operations
[Fri Jan 13 19:11:59 2012] [notice] caught SIGWINCH, shutting down gracefully
[Fri Jan 13 19:12:45 2012] [notice] Apache/2.2.8 (Ubuntu) PHP/5.2.4-2ubuntu5.17 with Suhosin-Patch configured -- resuming normal operations
[Fri Jan 13 19:13:03 2012] [notice] caught SIGWINCH, shutting down gracefully
[Fri Jan 13 19:13:14 2012] [notice] Apache/2.2.8 (Ubuntu) PHP/5.2.4-2ubuntu5.17 with Suhosin-Patch configured -- resuming normal operations
[Sat Jan 14 11:25:28 2012] [notice] caught SIGWINCH, shutting down gracefully
[Sat Jan 14 11:26:10 2012] [notice] Apache/2.2.8 (Ubuntu) PHP/5.2.4-2ubuntu5.17 with Suhosin-Patch configured -- resuming normal operations
[Sat Jan 14 11:34:34 2012] [notice] caught SIGWINCH, shutting down gracefully

我认为这只是报告我已从AWS控制台重新启动服务器。

Answer 1

P，修好了！为了他人的利益，503错误似乎是由于我的弹性负载均衡器没有任何健康的实例来路由请求。这是因为我用来检查健康状况的URL导致了一些数据库错误。我只是将运行状况检查ping目标更改为一个正常工作的路径，一切都重新开始工作。