THIS REPOSITORY IS NOT SUPPORTED: https://www.drupal.org/project/elasticsearch_connector/issues/3077463
Elasticsearch Connector is a set of modules designed to build a full Elasticsearch eco system in Drupal.
Download this module with the following command:
cd /path/to/drupal
composer require drupal/elasticsearch_connector
Then, either install it with Drush using drush en elasticsearch_connector or via
the administration interface.
For setting up Drupal to index content into Elasticsearch, follow the steps at https://www.lullabot.com/articles/indexing-content-from-drupal-8-to-elasticsearch.