OpenSearch Version?

[mallongstoaf62]

Could someone confirm what version of OpenSearch Magento ver. 2.4.3-p2 uses?
I have installed a local copy of our site on my Mac, the live site uses ElasticSearch7.
 
But brew had a wobble when installing ElasticSearch, and wouldn't install it...
so I installed OpenSearch 2.x.x I can see it up and running on localhost:9200
I have the following in my env file

 'catalog' => [
        'search' => [
            'engine' => 'opensearch',
            'opensearch_server_hostname' => 'localhost',
            'opensearch_server_port' => '9200',
            'opensearch_index_prefix' => 'magento2'
        ]
    ],

Then in my admin under Store>Configuration>Catalog>Catalog>Catalog Search 
I can only select Elasticsearch7 no option to select OpenSearch or no Idea where to add this?
Host: localhost
Port: 9200
Prefix: magento2
HTTP Auth: No
Timeout: 15
Connection Is successful

When I run 

php bin/magento indexer:reindex

I get the following results, with the error of not indexing the Catalog Search

Design Config Grid index has been rebuilt successfully in 00:00:00
Customer Grid index has been rebuilt successfully in 00:00:00
Product Flat Data index has been rebuilt successfully in 00:00:11
Category Flat Data index has been rebuilt successfully in 00:00:07
Category Products index has been rebuilt successfully in 00:00:11
Product Categories index has been rebuilt successfully in 00:00:00
Catalog Rule Product index has been rebuilt successfully in 00:00:05
Product EAV index has been rebuilt successfully in 00:00:11
Stock index has been rebuilt successfully in 00:00:05
Inventory index has been rebuilt successfully in 00:00:15
Catalog Product Rule index has been rebuilt successfully in 00:00:00
Product Price index has been rebuilt successfully in 00:00:05
Catalog Search index process error during indexation process:
{"error":"no handler found for uri [/magento2_product_1_v4/document/_mapping] and method [PUT]"}
Amasty Product Label index has been rebuilt successfully in 00:03:37
Amasty Product Label index has been rebuilt successfully in 00:00:00
Amasty: Product Grid - Qty Sold index has been rebuilt successfully in 00:00:00

When I run the following

php bin/magento config:set catalog/search/engine OpenSearch

I get Value was saved.

And no matter what I try I can't get the indexer to work??

Does anyone have any ideas or steps to take to get it to work, as I can't see any products on the front end?

Thanks in advance

Mal

[Mukesh Tiwari · Accepted solution]

Hi @mallongstoaf62 

The OpenSearch 1.2 version is required for the Magento ver. 2.4.3-p2.

Please read following article System requirements 

Thanks