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From Konstantin Boyandin <>
Subject [users@httpd] Apache 2.4.18 (Ubuntu 16.04): run user must be lock directory owner, or Apache falls back to default run user id
Date Thu, 19 Jan 2017 04:14:00 GMT

Apache: 2.4.18 (last available from Ubuntu 16.04 standard repository).

If Apache run-time user (APACHE_RUN_USER var) is changed to anything but 
default (www-data, I am using Ubuntu), Apache lock directory 
(APACHE_LOCK_DIR var) should first be chown'ed by that new user, 
otherwise Apache silently uses lock directory's current owner's UID (by 
default, www-data).

I checked the docs, including Debian-specific README, the above behavior 
isn't mentioned. Is it Debian/Ubuntu-specific? If not, it should, as I 
understand, be clearly documented and warning should be posted either 
when 'apache2ctl -t' runs, and/or when Apache2 process starts.

As I understand it, when the software ignores user-defined settings due 
to some inconsistency, that should be logged somewhere, or warned about 
at startup.



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