https://bz.apache.org/bugzilla/show_bug.cgi?id=62277

            Bug ID: 62277
           Summary: mod_slotmem_shm is causing error in apache2.4.33
                    loading
           Product: Apache httpd-2
           Version: 2.4.33
          Hardware: Sun
                OS: Solaris
            Status: NEW
          Severity: critical
          Priority: P2
         Component: mod_slotmem_plain / mod_slotmem_shm
          Assignee: bugs@httpd.apache.org
          Reporter: tan...@i2cinc.com
  Target Milestone: ---

I am in process of upgrading from apache 2.2 to 2.4.33, while everything is
working fine without ssl and ssl. But when I try to use proxy modules along
with slotmem_shm modules, which is according to my understanding is mandatory
now while using load balancers modules, I am getting following errors in
error_log :

[Fri Mar 16 17:52:12.073931 2018] [lbmethod_heartbeat:notice] [pid 15571:tid 1]
AH02282: No slotmem from mod_heartmonitor
[Fri Mar 16 17:52:12.275257 2018] [slotmem_shm:error] [pid 15571:tid 1]
(17)File exists: AH02611: create:
apr_shm_create(/usr/local/apache_QA_New/logs/slotmem-shm-p9cbf72c_check.shm)
failed
[Fri Mar 16 17:52:12.275543 2018] [proxy_balancer:emerg] [pid 15571:tid 1]
(17)File exists: AH01185: worker slotmem_create failed
[Fri Mar 16 17:52:12.275721 2018] [:emerg] [pid 15571:tid 1] AH00020:
Configuration Failed, exiting

I have been brainstorming for last 5 weeks. I have tried different solutions
like increasing kernel semaphores memory, they were about 128K which I have
increased to 16384K, but this solution still does not seem to work and it does
not seem to be proper solution either.

There are almost 30 balancers entries in my balancer file and more than 70
virtual hosts entries in httpd-vhosts.conf and at each restart apache creates
some file for shm and then go down and it keeps doing so until creation of all
files for which I have to restart it again and again.



Moreover, this is work on QA and I am not proceeding to prod to due to this
issue

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