[Koha] [EXTERNAL] Re: Elasticsearch in Debian 12

[King, Fred]

This will not be helpful, but it might be comforting and it might make you chuckle. I'm running my Koha instances on Ubuntu, and I haven't been able to install any Elasticsearch past 6.x, or on anything beyond Koha 22.11. I've gotten the "no nodes" error many times, also error messages about shards. Two instances have a status of green, one is still yellow. It works, which is the important thing.

My experience is that sometimes Elasticsearch installs successfully, sometimes it doesn't. When I tried to install Elasticsearch during a live demo at last month's koha-US conference (https://www.youtube.com/watch?v=sks5Jfb9drQ), it didn't go well at all, despite the fact that I had done a dress rehearsal the week before using THE EXACT SAME IMAGE AND COMMANDS. I didn't make a complete idiot of myself--my pants didn't fall down--but it wasn't one of my better presentations. When I got home I tried it again and it worked perfectly. I actually have a video of it in the works--I just need to add the narration.

I should add that I'm unsupported, and although I have made and broken more instances of Koha than most of you, I'm definitely not an expert in fitting all the parts together. YMMV.

--Fred

Fred King, MSLS, AHIP
Medical Librarian, MedStar Washington Hospital Center
fred.king at medstar.net
202-877-6670
ORCID 0000-0001-5266-0279
MedStar Authors Catalog: http://medstarauthors.org

If a black cat crosses your path, it signifies that the animal is going somewhere.
-- Groucho Marx

-----Original Message-----
From: Koha <koha-bounces at lists.katipo.co.nz> On Behalf Of Thomas Klausner
Sent: Thursday, October 26, 2023 1:34 PM
To: koha at lists.katipo.co.nz
Subject: [EXTERNAL] Re: [Koha] Elasticsearch in Debian 12



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Hi!

On Wed, Oct 25, 2023 at 07:59:36PM -0500, Ricardo Vargas wrote:
 
> The error with the two forms of indexing is as follows:
> 
> *koha-elasticsearch --rebuild -d -v lsbajio* [4119169] Checking state 
> of biblios index [4119169] Dropping and recreating biblios index 
> [NoNodes] ** No nodes are available: 
> [https://urldefense.com/v3/__http://localhost:9200__;!!D7IIWT94AA!9VAT
> hxI0e4HJyPMlE28y3ZwAYLjcmmOIMERMl7pt_hkfF3yZRjoHUxygqMJidWpG2ToGCISVjI
> TyKhY$ ], called from sub 
> Search::Elasticsearch::Role::Client::Direct::__ANON__ at 
> /usr/share/koha/lib/Koha/SearchEngine/Elasticsearch/Indexer.pm line 
> 430.Something went wrong rebuilding indexes for lsbajio
> 
> 
> 
> *koha-elasticsearch --rebuild -r -v lsbajio*[4119198] Checking state 
> of biblios index [4119198] Dropping and recreating biblios index 
> [NoNodes] ** No nodes are available: 
> [https://urldefense.com/v3/__http://localhost:9200__;!!D7IIWT94AA!9VAT
> hxI0e4HJyPMlE28y3ZwAYLjcmmOIMERMl7pt_hkfF3yZRjoHUxygqMJidWpG2ToGCISVjI
> TyKhY$ ], called from sub 
> Search::Elasticsearch::Role::Client::Direct::__ANON__ at 
> /usr/share/koha/lib/Koha/SearchEngine/Elasticsearch/Indexer.pm line 
> 430.Something went wrong rebuilding indexes for lsbajio

This looks exactly like the problem caused by ES clients not wanting to talk to some versions of ES server. David posted this to the koha-devel list in another thread about the same problem:


which ES perl client is installed?

the newest version that still works with ES7 (which we are using) is

https://urldefense.com/v3/__https://metacpan.org/release/EZIMUEL/Search-Elasticsearch-7.717/view/lib/Search/Elasticsearch.pm__;!!D7IIWT94AA!9VAThxI0e4HJyPMlE28y3ZwAYLjcmmOIMERMl7pt_hkfF3yZRjoHUxygqMJidWpG2ToGCISVtOdsL9o$ 

check currently installed version
`perl -MSearch::Elasticsearch\ 9999
Search::Elasticsearch version 9999 required--this is only version 7.717.`

if necessary, downgrade
`cpanm Search::Elasticsearch~"< 8.00"`


For us, downgrading "solved" the ES problems with newer Debians.



-- 
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