The solution was to add

AcceptMutex flock

to my Apache config.  Hope that helps someone else in the same
situation.

We've seen this on two RHEL5 machines now, so I suspect other folks
will see it as well.

Chris St. Pierre
Unix Systems Administrator
Nebraska Wesleyan University
----------------------------
LOPSA Sysadmin Days: Professional Training for Professional SysAdmins
August 6-7, Cherry Hill, NJ
http://lopsa.org/SysadminDays

On Fri, 29 Jun 2007, Chris St. Pierre wrote:

Anyone have any ideas on this?  It appears to be happening more than
once a week, with the most recent time being this morning.

Chris St. Pierre
Unix Systems Administrator
Nebraska Wesleyan University

On Wed, 27 Jun 2007, Chris St. Pierre wrote:

 We have a pair of web servers running RHEL5, and httpd crashes on them
 about once a week (not on a regular schedule) with the following
 errors in the error log:

 [Wed Jun 27 08:02:06 2007] [notice] suEXEC mechanism enabled (wrapper:
 /usr/sbin/suexec)
 [Wed Jun 27 08:02:06 2007] [error] (28)No space left on device: Cannot
 create SSLMutex
 Configuration Failed

 The immediate solution is simple enough, and can be found at
 
http://carlosrivero.com/fix-apache---no-space-left-on-device-couldnt-create-accept-lock
 for those curious.  However, rather than setting up a cron job to
 remove the semaphores and restart apache every night (ick!), I'd like
 to figure out what the root of the problem is so I can prevent it from
 happening in the first place.

 Anyone have any ideas where I could start to look?  Thanks!

 Chris St. Pierre
 Unix Systems Administrator
 Nebraska Wesleyan University
 ----------------------------
 LOPSA Sysadmin Days: Professional Training for Professional SysAdmins
 August 6-7, Cherry Hill, NJ
 http://lopsa.org/SysadminDays

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