[Koha-bugs] [Bug 14774] New: Task Scheduler not working on Ubuntu/Apache2.4

[bugzilla-daemon at bugs.koha-community.org]

http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=14774

            Bug ID: 14774
           Summary: Task Scheduler not working on Ubuntu/Apache2.4
 Change sponsored?: ---
           Product: Koha
           Version: master
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P5 - low
         Component: Task Scheduler
          Assignee: gmcharlt at gmail.com
          Reporter: liz at catalyst.net.nz
        QA Contact: testopia at bugs.koha-community.org

The task scheduler uses At to schedule reports to be run later. It's doing
something weird in Ubuntu 14, Apache 2.4.

Scheduling a task on Debian/Apache 2.2 results in the job being added, and it
showing up in the web page. This doesn't happen on Ubuntu/Apache 2.4, it
returns a "Failed to add job."

It looks like Koha is asking atq for the list of current jobs (through
Schedule::At) and it's not getting a list back when run on Ubuntu/2.4. This all
works just fine in Debian/2.2.

in /var/spool/cron/atjobs we can see where jobs are added:

Failing job "Failed to add job", Ubuntu, Apache 2.4:
---------- 1 daemon daemon 2.9K Sep  2 15:19 a0004a016e87ae

Successful job displays in the web page, Debian, Apache 2.2
-rwx------ 1 library-koha daemon 2.8K Sep  2 16:15 a00014016f1f52

When we ask for the euid/gid of the user when trying to add these failed jobs,
it seems like it should be OK:

uid: 1005, euid: 1005

Which corresponds to the uid given in /etc/passwd:
library-koha:x:1005:1005

As far as I can tell, those daemon:daemon no permissions jobs aren't actually
run - how could they, they have no executable permissions.

Pretty sure this bug isn't in Koha proper (the scheduler actually works just
fine in Debian/2.2), but some interaction or security thing in Ubuntu/Apache
2.4. It might be nice to figure out why it happens, so we can end run the
problem (or decide to scrap the At reliant scheduler, which is probably a
"should do" anyway).

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