Trying to run:
sudo apachectl restart
Are you getting:
/usr/sbin/apachectl: line 82: ulimit: open files: cannot modify limit: Invalid argument
Edit your /usr/sbin/apachectl on line 65 from:
ULIMIT_MAX_FILES="ulimit -S -n ulimit -H -n"
to:
ULIMIT_MAX_FILES=""
and try again. It should now be working agian
For more information checkout Deversus