我配置了 apache2 的 Ec2 实例运行良好，突然 Web 服务器停止提供页面。我检查了所有日志，但没有帮助，或者我可能遗漏了什么。以下是 apache2 的错误日志
[Mon Jan 12 18:15:49 2015] [error] [client 76.164.202.114] PHP Notice: Undefined index: categoryname in /data/html/judaism.php on line 11
[Mon Jan 12 18:15:49 2015] [error] [client 76.164.202.114] PHP Notice: Undefined index: title in /data/html/judaism.php on line 18
[Mon Jan 12 18:16:29 2015] [error] [client 114.124.39.172] PHP Notice: Undefined variable: link in /data/html/article_emailconfig.php on line 37
[Mon Jan 12 18:16:29 2015] [error] [client 114.124.39.172] PHP Notice: Undefined variable: link in /data/html/article_emailconfig.php on line 37
[Mon Jan 12 18:16:46 2015] [error] [client 5.44.217.87] File does not exist: /data/html/old
[Mon Jan 12 18:16:56 2015] [error] [client 114.124.39.172] PHP Notice: Undefined variable: link in /data/html/article_emailconfig.php on line 37
[Mon Jan 12 18:16:56 2015] [error] [client 114.124.39.172] PHP Notice: Undefined index: urlid in /data/html/friend.php on line 67
[Mon Jan 12 18:16:56 2015] [error] [client 114.124.39.172] PHP Notice: Undefined variable: link in /data/html/article_emailconfig.php on line 37
[Mon Jan 12 18:17:27 2015] [error] [client 188.165.15.117] PHP Notice: Undefined index: categoryname in /data/html/judaism.php on line 11
[Mon Jan 12 18:17:27 2015] [error] [client 188.165.15.117] PHP Notice: Undefined index: title in /data/html/judaism.php on line 18
[Mon Jan 12 18:17:36 2015] [error] [client 120.40.144.203] PHP Notice: Undefined index: categoryname in /data/html/judaism.php on line 11
[Mon Jan 12 18:17:36 2015] [error] [client 120.40.144.203] PHP Notice: Undefined index: title in /data/html/judaism.php on line 18
[Mon Jan 12 18:17:39 2015] [error] [client 12.218.42.6] PHP Notice: Undefined index: categoryname in /data/html/judaism.php on line 11, referer: http://search.pch.com/frontpagesearch?q=shovavim
[Mon Jan 12 18:17:39 2015] [error] [client 12.218.42.6] PHP Notice: Undefined index: title in /data/html/judaism.php on line 18, referer: http://search.pch.com/frontpagesearch?q=shovavim
[Mon Jan 12 18:17:45 2015] [error] [client 66.249.67.27] script '/data/html/go.php' not found or unable to stat
[Mon Jan 12 18:17:57 2015] [error] [client 46.165.222.7] PHP Notice: Undefined index: categoryname in /data/html/judaism.php on line 11
[Mon Jan 12 18:17:57 2015] [error] [client 46.165.222.7] PHP Notice: Undefined index: title in /data/html/judaism.php on line 18
[Mon Jan 12 18:18:31 2015] [error] [client 66.249.67.35] script '/data/html/go.php' not found or unable to stat
[Mon Jan 12 18:18:36 2015] [error] [client 171.113.243.6] PHP Notice: Undefined index: categoryname in /data/html/judaism.php on line 11
[Mon Jan 12 18:18:36 2015] [error] [client 171.113.243.6] PHP Notice: Undefined index: title in /data/html/judaism.php on line 18
[Mon Jan 12 19:05:14 2015] [notice] caught SIGTERM, shutting down
[Mon Jan 12 19:05:33 2015] [notice] Apache/2.2.22 (Ubuntu) PHP/5.3.10-1ubuntu3.14 with Suhosin-Patch configured -- resuming normal operations
[Mon Jan 12 19:05:33 2015] [error] [client 87.253.132.202] script '/data/html/virtualjerusalem_rss.php' not found or unable to stat
[Mon Jan 12 19:05:33 2015] [error] [client 87.253.132.202] script '/data/html/virtualjerusalem_rss.php' not found or unable to stat
[Mon Jan 12 19:05:51 2015] [error] [client 66.249.67.27] script '/data/html/food/MOVED/Soup_minestrone.php' not found or unable to stat
[Mon Jan 12 19:06:09 2015] [error] [client 87.253.132.203] script '/data/html/virtualjerusalem_rss.php' not found or unable to stat
[Mon Jan 12 19:06:10 2015] [error] [client 87.253.132.203] script '/data/html/virtualjerusalem_rss.php' not found or unable to stat
[Mon Jan 12 19:06:10 2015] [error] [client 66.249.67.133] script '/data/html/virtualjerusalem_rss.php' not found or unable to stat
我丢失了将近 45-47 分钟的日志。有人能帮我解决吗？
答案1
看来您的服务器在这 45 分钟内处于宕机状态。尝试重新启动您的服务器：
/etc/init.d/apache2 restart
如果问题仍然存在，请尝试完全重启。
如果问题消失，那么 Apache 可能已经崩溃了 - Apache 2.2 中有一个错误（非常古老，几年前就解决了https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=398223）
如果问题仍然存在，您是否有崩溃前的系统映像？如果有，配置文件的比较可能会告诉我们您的服务器是否被篡改了。如果您在那里有 SSH 服务器，请检查
/var/log/auth.log
可能还有其他文件：
/var/log/auth.log.1
/var/log/auth.log.2.tgz etc
找到包含感兴趣的时间范围的那个，并查看其中是否有任何可疑的东西。