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Running a local centos 7 apache webserver, recently it stopped working. Journalctl don't say anything other then service failed. Only the error_log in /var/log/httpd/ says:

[core:notice] [pid 5026:tid 139693344536768] SELinux policy enabled; httpd running as context system_u:system_r:httpd_t:s0
[suexec:notice] [pid 5026:tid 139693344536768] AH01232: suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[core:emerg] [pid 5026:tid 139693344536768] (13)Permission denied: AH00023: Couldn't create the proxy mutex 
[proxy:crit] [pid 5026:tid 139693344536768] (13)Permission denied: AH02478: failed to create proxy mutex
AH00016: Configuration Failed

However I can't figure out what file is meant nor find on the internet anything to this one.

PauloBoaventura
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Tim
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2 Answers2

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Okay thanks to Permission denied: couldn’t grab the accept mutex I added following to my httpd.conf:

Mutex posixsem

Which did fix the issue.

Tim
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For anyone who stumbles onto this, I'm able to reproduce the issue by running an apache2 docker container on a non-native platform via qemu emulation.

If you're seeing the issue from a Docker image, try changing the platform to match the host system.

bennettp123
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