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From Ole Tange <...@tange.dk>
Subject os-linux/1940: httpd children dies for no apparent reason
Date Fri, 13 Mar 1998 12:18:25 GMT

>Number:         1940
>Category:       os-linux
>Synopsis:       httpd children dies for no apparent reason
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    apache
>State:          open
>Class:          sw-bug
>Submitter-Id:   apache
>Arrival-Date:   Fri Mar 13 04:20:00 PST 1998
>Last-Modified:
>Originator:     ole@tange.dk
>Organization:
apache
>Release:        1.2.5
>Environment:
Linux ns.above.tange.org 2.0.32 #1 Wed Nov 19 00:46:45 EST 1997 i586 unknown
RedHat 5.0
apache-1.2.5-1.i386.rpm
>Description:
PR#1072 and PR#1893 seems to address the same problem. But do not come up with a solution.

I restart httpd every minute if less than 5 servers are running.

/var/log/messages contains a lot of:
Warning: possible SYN flood from ...

grep -B 5 configured /var/log/httpd/error_log gives:
[Sun Mar  8 12:18:58 1998] accept: (client socket): Connection reset by peer
[Sun Mar  8 12:18:58 1998] accept: (client socket): Connection reset by peer
[Sun Mar  8 12:18:58 1998] accept: (client socket): Connection reset by peer
[Sun Mar  8 12:19:00 1998] httpd: caught SIGTERM, shutting down
[Sun Mar  8 12:19:07 1998] created shared memory segment #384
[Sun Mar  8 12:19:07 1998] Server configured -- resuming normal operations
--
[Sun Mar  8 14:12:52 1998] accept: (client socket): Connection reset by peer
[Sun Mar  8 14:12:52 1998] accept: (client socket): Connection reset by peer
[Sun Mar  8 14:12:52 1998] accept: (client socket): Connection reset by peer
[Sun Mar  8 14:13:01 1998] httpd: caught SIGTERM, shutting down
[Sun Mar  8 14:13:07 1998] created shared memory segment #512
[Sun Mar  8 14:13:07 1998] Server configured -- resuming normal operations
--
[Sun Mar  8 15:17:27 1998] accept: (client socket): Connection reset by peer
[Sun Mar  8 15:17:27 1998] accept: (client socket): Connection reset by peer
[Sun Mar  8 15:18:00 1998] accept: (client socket): Connection reset by peer
[Sun Mar  8 15:18:00 1998] httpd: caught SIGTERM, shutting down
[Sun Mar  8 15:18:09 1998] created shared memory segment #640
[Sun Mar  8 15:18:09 1998] Server configured -- resuming normal operations

>How-To-Repeat:

>Fix:
It would be nice to have httpd print some debug info. Especially concerning
spawning processes
>Audit-Trail:
>Unformatted:
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