MacOS – El Capitan Apache error message AH00526

apachemacos

Yesterday I upgraded my Mac from Mountain Lion to El Capitan. Trying to get apache2 working I get the following error message:

AH00526: Syntax error on line 20 of /private/etc/apache2/extra/httpd-mpm.conf: Invalid command 'LockFile', perhaps misspelled or defined by a module not included in the server configuration.

What might be the remedy?

Best Answer

LockFile is one of the directives of Apache ≤ 2.2. This was replaced by Mutex in Apache 2.4, which is the version of Apache installed with OS X 10.11, El Capitan.

Edit the file /etc/apache2/extra/httpd-mpm.conf to remove this part:

#
# The accept serialization lock file MUST BE STORED ON A LOCAL DISK.
#
<IfModule !mpm_winnt_module>
<IfModule !mpm_netware_module>
  LockFile "/private/var/log/apache2/accept.lock"
</IfModule>
</IfModule>

Then check config apachectl -t and restart sudo apachectl restart.

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