On 10/4/05, Craig White craigwhite@azapple.com wrote:
On Tue, 2005-10-04 at 17:45 -0700, Fong Vang wrote:
One of our systems run Apache 2.0.52 (httpd-2.0.52-12.2.ent.centos4 rpm). The kernel we're running is 2.6.9-11.ELsmp. After a few weeks of uptime, Apache refuses to start with the following error in error.log:
[crit] (28)No space left on device: mod_jk: could not create jk_log_lockWith Apache not running, there're a lot of semaphores left behind by Apache, e.g.:
------ Semaphore Arrays -------- key semid owner perms nsems 0x00000000 98304 root 600 1 0x00000000 131073 apache 600 1 0x00000000 163842 apache 600 1 0x00000000 196611 apache 600 1 0x00000000 229380 apache 600 1 0x00000000 786437 root 600 1 ... ... ... /proc/sys/kernel/sem has the following settings: 250 32000 32 128
Is this an Apache issue or is this a kernel issue? Why is Apache not releasing the semaphores?
my guess is that you are out of space on partition containing /var
try command line...
df -h
see what 'No space on device' actually means
Space is not the issue. That's the first thing I checked. It's definitely because the system ran out of semaphores. After I cleared out the semaphores belonging to Apache, it started again.
I need to understand why Apache is not releasing the semaphores on shutdown (or why the system does not release the semaphore if Apache is no longer running).
Craig
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