[Fri Aug 05 05:54:44 2011] [error] [client 88.190.231.199] client sent HTTP/1.1 request without hostname (see RFC2616 section 14.23): /w00tw00t.at.ISC.SANS.DFind:)
[Fri Aug 05 06:20:14 2011] [error] [client 72.14.176.176] File does not exist: /var/www/connect.facebook.net, referer: http://www.mysite.com/
[Fri Aug 05 06:24:44 2011] [error] [client 69.171.229.246] File does not exist: /var/www/images
[Fri Aug 05 06:35:04 2011] [error] [client 173.29.117.113] File does not exist: /var/www/Fforum
[Fri Aug 05 06:38:57 2011] [error] [client 91.194.219.139] client sent HTTP/1.1 request without hostname (see RFC2616 section 14.23): /w00tw00t.at.ISC.SANS.DFind:)
[Fri Aug 05 06:39:41 2011] [error] [client 91.194.219.139] client sent HTTP/1.1 request without hostname (see RFC2616 section 14.23): /w00tw00t.at.ISC.SANS.DFind:)
[Fri Aug 05 06:49:41 2011] [error] [client 119.92.155.52] File does not exist: /var/www/...
[Fri Aug 05 07:01:14 2011] [error] [client 91.194.219.139] client sent HTTP/1.1 request without hostname (see RFC2616 section 14.23): /w00tw00t.at.ISC.SANS.DFind:)
[Fri Aug 05 07:03:35 2011] [warn] child process 24958 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24694 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24978 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24227 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 25007 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 23427 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24633 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24854 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 25008 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24796 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24644 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24824 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24697 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24277 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 25009 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24645 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24554 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24178 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 25010 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24698 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 23553 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24557 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 25067 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24799 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 25079 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 23626 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24650 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24699 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24652 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 25085 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24595 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 25087 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24904 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24598 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 25088 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 25094 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24905 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 23252 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24906 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 25095 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 23253 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24602 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24830 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24911 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24912 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24605 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24915 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 24917 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 25103 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 25110 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 25111 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 25112 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 25115 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 25118 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 25124 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 25127 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 25129 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 25130 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 25133 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:13 2011] [warn] child process 25134 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:15 2011] [warn] child process 25166 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:16 2011] [error] child process 25140 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25142 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25150 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25152 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25154 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25156 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25159 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25160 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25161 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25162 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25163 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25166 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25167 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25169 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25170 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25178 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25179 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25182 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25183 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25187 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25192 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25195 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25196 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25204 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25206 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25207 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25212 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25213 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25214 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25217 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25219 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25229 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25230 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25231 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25232 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:16 2011] [error] child process 25234 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24958 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24694 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24978 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24227 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25007 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 23427 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24633 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24796 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24644 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24824 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24697 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24277 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25009 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24645 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24554 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24178 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25010 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 23553 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24557 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25067 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24799 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25079 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 23626 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24650 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24699 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24652 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25085 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24595 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25087 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24904 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24598 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25088 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25094 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24905 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 23252 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24906 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25095 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 23253 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24602 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24830 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24911 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24912 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24915 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 24917 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25103 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25111 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25112 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25115 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25118 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25124 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25127 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25129 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25130 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25162 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25163 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25166 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25167 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25169 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25170 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25178 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25187 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25192 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25195 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25196 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25204 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25206 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25207 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25212 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25213 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25214 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25217 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25219 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25230 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25231 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25232 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25234 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [notice] caught SIGTERM, shutting down
SIGTERM 错误还有很多，由于字符限制，不得不删除其中一半。有人能告诉我这个警告是什么意思，以及如何避免服务器崩溃吗？
答案1
[Fri Aug 05 05:54:44 2011] [error] [client 88.190.231.199] client sent HTTP/1.1 request without hostname (see RFC2616 section 14.23): /w00tw00t.at.ISC.SANS.DFind:)
[Fri Aug 05 06:38:57 2011] [error] [client 91.194.219.139] client sent HTTP/1.1 request without hostname (see RFC2616 section 14.23): /w00tw00t.at.ISC.SANS.DFind:)
[Fri Aug 05 06:39:41 2011] [error] [client 91.194.219.139] client sent HTTP/1.1 request without hostname (see RFC2616 section 14.23): /w00tw00t.at.ISC.SANS.DFind:)
好像有人正在探测你的服务器查找。但是 Apache 拒绝了该请求，因为缺少主机名。
您可以使用iptables模块string来删除它：
iptables -A INPUT -d <your_server_IP> -p tcp --dport 80 -m string -algo bm --string '/w00tw00t.at.ISC.SANS.' -j DROP
您应该将偏移量限制为使用--from和进行搜索（在服务器上--to执行并使用 Wireshark 打开）。tcpdump
[warn] child process 24958 still did not exit, sending a SIGTERM
这意味着子进程尚未终止并且已发送 SIGnal TERMinate。error_log 中还有其他错误吗？？
[error] child process 25140 still did not exit, sending a SIGKILL
立即强制终止子进程。
[error] could not make child process 25234 exit, attempting to continue anyway
该进程由于某种原因挂起且无法被终止。
答案2
如果进程无法被杀死，即使是通过SIGKILL，也意味着它们被挂在某些不可中断的 I/O 上。这些进程越来越少（NFS 曾经是其中之一，但现在不再是了），所以您真的应该跟踪挂起的进程并检查 dmesg 以了解可能发生了什么。它们都不是所谓的“正常操作”。
答案3
这些消息看起来像是系统正在故意关闭：
[Fri Aug 05 07:03:35 2011] [warn] child process 24958 still did not exit, sending a SIGTERM
[Fri Aug 05 07:04:16 2011] [error] child process 25170 still did not exit, sending a SIGKILL
[Fri Aug 05 07:04:17 2011] [error] could not make child process 25234 exit, attempting to continue anyway
[Fri Aug 05 07:04:17 2011] [notice] caught SIGTERM, shutting down
当系统关闭时，它会终止每个进程，首先尝试使用 TERM，然后尝试 KILL，然后继续；最后一项显示 syslog 已被终止。
这不是过热或内存不足或文件系统挂载锁定的情况 - 某些特定原因导致了关闭。