Thanks and Regards,
Amar Londhe

Hello,

We've recently installed Koha (version 22.05.06) and are attempting to enable Elasticsearch for our system. However, we've encountered some difficulties during the configuration process.

The problem arises when we attempt to rebuild or perform searches in the OPAC (Online Public Access Catalog).
The error message we encounter is as follows:

$ export KOHA_CONF=/etc/pnvmkoha/koha-conf.xml
$ export PERL5LIB=/usr/share/pnvmkoha/lib
$ /usr/share/pnvmkoha/bin/search_tools/rebuild_elasticsearch.pl -v -d

[NoNodes] ** No nodes are available: [localhost:9200], called from sub Search::Elasticsearch::Role::Client::Direct::ANON at /usr/share/koha_inst/lib/Koha/SearchEngine/Elasticsearch/Indexer.pm line 421.


Here are some key details:

Elastic search :

root@server1:~# curl localhost:9200
{
  "name" : "YKwcLd8",
  "cluster_name" : "elasticsearch",
  "cluster_uuid" : "kKKWjSXJTPeRCCMYDVNdTw",
  "version" : {
    "number" : "6.8.23",
    "build_flavor" : "default",
    "build_type" : "deb",
    "build_hash" : "4f67856",
    "build_date" : "2022-01-06T21:30:50.087716Z",
    "build_snapshot" : false,
    "lucene_version" : "7.7.3",
    "minimum_wire_compatibility_version" : "5.6.0",
    "minimum_index_compatibility_version" : "5.0.0"
  },
  "tagline" : "You Know, for Search"
}

Java version :

root@server1:~# java --version
openjdk 11.0.20.1 2023-08-24
OpenJDK Runtime Environment (build 11.0.20.1+1-post-Ubuntu-0ubuntu122.04)
OpenJDK 64-Bit Server VM (build 11.0.20.1+1-post-Ubuntu-0ubuntu122.04, mixed mode, sharing)


koha-conf.xml  :

<elasticsearch>
     <server>localhost:9200</server>
     <index_name>KOHA__INST</index_name>
     <!-- See https://metacpan.org/pod/Search::Elasticsearch#cxn_pool -->
     <cxn_pool>Static</cxn_pool>
     <!-- See https://metacpan.org/pod/Search::Elasticsearch#trace_to -->
     <!-- <trace_to>Stderr</trace_to> -->
 </elasticsearch>

<elasticsearch_index_mappings>/etc/koha_inst/searchengine/elasticsearch/mappings.yaml</elasticsearch_index_mappings>


Server Details :

Distributor ID:    Ubuntu
Description:    Ubuntu 22.04.3 LTS
Release:    22.04
Codename:    jammy

Note : We have tried to enabled ES on koha v20.11.06 and its working fine without any error.

Please let me know if you need any additional information or if you have any suggestions to resolve this Elasticsearch configuration problem.

-- 
Thanks and Regards,
Amar Londhe