[Koha] Koha zebra indexing stops every day morning.

[Mark Alexander]

Excerpts from Server Room Thane's message of 2016-12-19 13:38:38 +0530:
> I am using Koha 16.05.04.000 version on Ubuntu 16.04.1 LTS. Problem is
> that, each day morning OPAC searching stops. We checked the status of
> Koha-common service. Its active.

I ran into this problem, too.  It might be this bug:

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=16885

I am running the latest 16.05, and the problem persisted despite the
update having applied the patch described in the bug to
/usr/sbin/koha-stop-zebra.

To work around this problem, I used the suggestion from Radek Siman
to disable anacron (while logged in as root):

    1) open /etc/cron.d/anacron and add a # to turn off the line starting
    with 30 7 * * *  ....anacron...
    2) mv /usr/sbin/anacron /usr/sbin/anacron-temporarily-renamed