[Koha] Zebra indexing question

Fri Nov 20 03:26:02 NZDT 2009

Thanks for the advice. When we run rebuild zebra manually we had been
running it as root through Webmin. I can set up the manual job to run
under Koha user.

Now that things are working with no errors we will make the changes
necessary so that we don't lose ownership again.

John

________________________________

From: Biblioteca Casa Balthasar [mailto:biblioteca at casabalthasar.org] 
Sent: Thursday, November 19, 2009 2:43 AM
To: Chadwick, John, DCA; koha koha
Subject: Re: [Koha] Zebra indexing question

It seems like a lot of folks have had similar problems, and we have as
well, and maybe it would help to explain why these problems occur.
Rebuild_zebra.pl -r deletes all of the files in the Zebra db directories
(such as reci-0.mf) and then recreates them.  Thus, permissions will be
lost, and the files will be owned by the user who ran rebuild_zebra.pl.
If one rebuilds the zebra indexes as root, the daemons, which typically
run under the user koha, will not be able to update the indexes.  Thus,
it's important then that the zebra rebuilds are put in the cronjob file
of the user koha, and not root.  Also important is that other users,
such as root, don't manually execute rebuilds.

If one desires that another user be able to execute rebuild_zebra.pl, he
should be given the permission to execute 'sudo -u Koha
.../rebuild_zebra.pl,' (if you want to do this, you also have to edit
the sudoers file to pass the PERL5LIB variable with the env_keep option
as by default sudo strips away almost all environment variables).  Or,
as root user, one can use a simple 'su koha' and then the
rebuild_zebra.pl command.

I've also tried to set the sticky bit on rebuild_zebra.pl, but for
whatever reason it didn't seem to work due to some problem with the
PERL5LIB variable that I wasn't able to figure.  That seems to me the
easiest thing to do, if anybody has any idea how to make it work.  If it
worked and were the default, I think it would help folks to avoid a
great deal of the problems that come up with zebra.

Best regards to all,

Patrick Redmon

2009/11/18 Chadwick, John, DCA <john.chadwick at state.nm.us>

Looks like the issue was ownership, not permissions. 

As a test I deleted the log files and restarted the server. The files in
the directory remained with the koha user and group, but the permissions
got set back down.

-rw-r--r-- 1 koha koha     8192 2009-11-18 15:40 reci-0.mf

John

+-----------------------------------------------------------------------
-----+

John Chadwick, Ed.D. Information Technology Manager

New Mexico State Library

1209 Camino Carlos Rey

Santa Fe, NM 87507

Phone: 505-476-9740  Cell: 505-629-8116 Fax: 505-476-9761

john.chadwick at state.nm.us

http://www.nmstatelibrary.org

________________________________

From: Joe Atzberger [mailto:ohiocore at gmail.com] 
Sent: Wednesday, November 18, 2009 3:11 PM
To: Chadwick, John, DCA
Cc: Koha at lists.katipo.co.nz
Subject: Re: [Koha] Zebra indexing question

The recommended configuration is to run rebuild_zebra out of crontab
(See the example crontab file) but I'm not sure if this error is
related.  

2009/11/18 Chadwick, John, DCA <john.chadwick at state.nm.us>

I am noticing some errors in the koha-zebradaemon-output.log file. When
new records are added it takes a bit longer to index than we think they
should. Running rebuild zebra is often faster.

The log file shows the following:

14:31:44-18/11 zebrasrv(55) [warn] Failed to open
/var/lib/bbmkoha/zebradb/biblios/register/reci-0.mf [Permission denied]

14:31:44-18/11 zebrasrv(55) [fatal] mf_write: reci error (1)

14:31:44-18/11 zebrasrv(55) [fatal] write commit block

14:31:44-18/11 zebrasrv(55) [warn] zebra_commit: failed

Zebra ends up indexing and search works, but I am concerned about the
errors. Any ideas?

OK, baseline question: does
/var/lib/bbmkoha/zebradb/biblios/register/reci-0.mf exist?  What are the
owner:group and permissions?

--joe

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