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Description of problem:

The legacy HTTPD variable defined in /etc/sysconfig/httpd, which should be ignored according to the documentation, is actually taken into account when doing a graceful restart. When adding the following line to /etc/sysconfig/httpd...

HTTPD=/usr/sbin/httpd.event

...graceful restart fails because of being unable to locate the binary:

# systemctl start httpd
# apachectl reload
/usr/sbin/apachectl: line 137: /usr/sbin/httpd.event: No such file or directory

Version-Release number of selected component (if applicable):
httpd-2.4.6-31.el7.x86_64

My apologies, now I see that 'reload' is not a valid apachectl command, so I am not quite sure whether to consider this behaviour a bug or a feature. Strictly speaking, the HTTPD variable should be ignored under any circumstances. Also, the output could surely be more informative when a nonexistent apachectl command is run. On the other hand, whoever enters meaningless commands can hardly expect a meaningful answer.

Devel, the decision upon this bug's fate is yours.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-2194.html