[Koha] Batch check outs timing out after upgrade and migration

Lennon Mazonde lennon at kohasupport.com
Tue Sep 14 19:10:18 NZST 2021

Hi Matthew,

1. To enable Plack you need to run

     sudo koha-plack --enable instancename


     sudo koha-plack --start  instancename

2. To resolve the admin email warning, go to Home  > Administration  > 
System preferences > Interface options > KohaAdminEmailAddress and enter 
your admin email. You may have to do some additional configuration on 
your back-end server to setup an email server such as Postfix to enable 
your Koha instance to send out emails.

I hope this helps!

Lennon Mazonde
lennon at kohasupport.com
WhatsApp @ (+1) 717.489.0195

On 9/14/21 8:55 AM, Matthew Lindfield Seager wrote:
> Hi Katrin,
> Memcached is installed and running according to the About Koha page.
> Following the second lot of instructions at
> https://wiki.koha-community.org/wiki/Troubleshooting_memcached I can see
> that it has been handling requests. I also compared the old server (post
> upgrade to 21.05) with the new server and both have the same configuration
> in `/etc/memcached.conf`. According to the about page configuration is
> coming from koha-conf.xml but I'm not sure where to find that file (and it
> doesn't seem like Memcached is the culprit so I didn't bother installing
> mlocate to find it).
> The only mentions of Plack I can see are on the Perl Modules info page:
>     - Plack::Middleware::ReverseProxy (0.14) - 0.16
>     - Plack::Middleware::LogWarn (0.001002) - 0.001002
> I could not find any info in the Wiki about Plack other than the ~2017 Plack
> page <https://wiki.koha-community.org/wiki/Plack> and a brief mention on
> the Performance page <https://wiki.koha-community.org/wiki/Performance>. Is
> there anything I need to do to enable it?
> Both old and new server have a single warning on the System information tab:
> "System preference 'KohaAdminEmailAddress' does not contain a valid email
> address. Emails will not be sent."
> Comparing the Server Information page for the old server (which is super
> slow after the 21.05 upgrade but doesn't time out) with the new server
> (which is super slow AND times out), the only differences are:
>     - Minor Koha version (old server is, new server is
>     - Slightly different kernel release and version (old is
>     5.4.0-84-generic, #94-Ubuntu; new is 5.4.0-81-generic, #91-Ubuntu)
>     - Different MySQL versions (old is "mysql Ver 15.1 Distrib
>     10.3.31-MariaDB, for debian-linux-gnu (x86_64) using readline 5.2", new is
>     "mysql Ver 8.0.26-0ubuntu0.20.04.2 for Linux on x86_64 ((Ubuntu))"
> Thanks so much for some additional places to look for issues! If something
> in there gives a clue or if anyone has any other suggestions for things to
> check I'm all ears!
> Matt
> On Mon, 13 Sept 2021 at 07:01, <koha-request at lists.katipo.co.nz> wrote:
>> Date: Sun, 12 Sep 2021 12:46:57 +0200
>> From: Katrin Fischer <katrin.fischer.83 at web.de>
>> To: koha at lists.katipo.co.nz
>> Subject: Re: [Koha] Batch check outs timing out after upgrade and
>>          migration
>> Message-ID: <219ecc3c-ed9a-d27c-7074-962422505f80 at web.de>
>> Content-Type: text/plain; charset=utf-8; format=flowed
>> Hi Matthew,
>> is there anything on the "About Koha" page that might give a clue?
>> * Is Memcached running?
>> * Is Plack configured and running?
>> * Is there any error or warning displayed on the System information tab?
>> Hope this helps,
>> Katrin
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