Hi,
i installed orangepi focal server
apache php mariadb server all ok

i try to install ssl :
sudo a2enmod ssl
sudo a2ensite default-ssl
sudo systemctl restart apache2


i have this error :
Jan 16 07:49:30 orangepizero2 apachectl[4642]: [Sat Jan 16 07:49:30.459936 2021] [core:emerg] [pid 4645] (38)Function not implemented: AH00023: Couldn't create the mpm-accept-mutex
Jan 16 07:49:30 orangepizero2 apachectl[4642]: (38)Function not implemented: could not create accept mutex
Jan 16 07:49:30 orangepizero2 apachectl[4642]: AH00015: Unable to open logs
Jan 16 07:49:30 orangepizero2 apachectl[4642]: Action 'start' failed.
Jan 16 07:49:30 orangepizero2 apachectl[4642]: The Apache error log may have more information.
Jan 16 07:49:30 orangepizero2 systemd[1]: apache2.service: Control process exited, code=exited, status=1/FAILURE
-- Subject: Unit process exited
-- Defined-By: systemd
-- Support: https://www.debian.org/support
--
-- An ExecStart= process belonging to unit apache2.service has exited.


thanks for any help

Have a look in  /var/log/apache for any clues.

What do you get if you execute:


in the terminal,
Do you see a message:
"Eanabling site default-ssl" ?

yes :

in /var/log/apache2/error.log :

This looks like a mutex permission. You may have to add yourself to group www
Run this command and see if your output is different:



My output:
www-data:x:33:

If you have an output of www  then apache has created this group.
From your user ID type



This will show you  what groups you are a member of. If apache needs
to be a member of group www then run



This will add user "pi" to group "www" change pi to your username but
will only work if apache requires group www.