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Created attachment 1033646 [details]
Example configuration that will lead to a crash on graceful reload

Description of problem:

Defined variables in Apache HTTP server version 2.4.x in RHEL 7 are not properly handled during graceful restarts, leading to variables suddenly becoming undefined or other unpredictable behaviour.

Version-Release number of selected component (if applicable):

Reproduced with httpd-2.4.6-31.el7.x86_64

How reproducible:

Every time.

Steps to Reproduce:
1. Define a certain set of variables (Example configuration attached)
2. Make the variable a part of a configuration item
3. Reload Apache

Actual results:

The variables apparently get undefined and any configuration using the value of the variable will result in a syntax error.

Expected results:

No errors.

Additional info:

The problem is discussed at https://bz.apache.org/bugzilla/show_bug.cgi?id=57328, and was fixed in 2.4.10.

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