Drupal Solr connector

Install modules search_api and search_api_solr

cd /var/www/siteDir

# sudo -u www-data composer require drupal/search_api
# sudo -u www-data vendor/drush/drush/drush en search_api

# sudo -u www-data composer require drupal/search_api_solr
# sudo -u www-data vendor/drush/drush/drush en search_api_solr

Configure server

Browse to admin/config/search/search-api and click Add server

Server name			solr_server_name
Enabled				YES

Backend				Solr
Configure Solr backend		Standard
Configure Standard Solr connector
	HTTP protocol		http
	Solr host		solrVM.domain.com
	Solr port		8983
	Solr path		/solr
	Solr core		archipelago

Advanced
Retrieve result data from Solr	YES
Retrieve highlighted snippets	YES

Configure index

Browse to admin/config/search/search-api and click Add index

Index name			solr_index_name
Data sources
	Content			YES
Server				solr_server_name
Enabled				YES
Description			Basic Content

Check server conf

Browse to admin/config/search/search-api/server/solr_server_name

Status 	enabled 	(disable)
Backend class 		Solr
Search indexes 		solr_index_name
Solr connector plugin 	Standard
Solr server URI 	http://solrVM.domain.com:8983/solr/
Solr core URI 		http://solrVM.domain.com:8983/solr/#/archipelago
Server Connection 	The Solr server could be reached.
Core Connection 	The Solr core could be accessed (latency: 7.0372091064453 ms).
Configured Solr Version 7.6.0
Detected Solr Version 	7.6.0
Indexed 		0 items (69 bytes on disk)
Delay 			10 sec before updates are processed.
Schema 			drupal-6.0-solr-7.x
Solr Core Name 		archipelago
Targeted content domain generic

Check index conf

Browse to admin/config/search/search-api/index/solr_index_name

Status 			enabled (disable)
Datasource 		Content (0/0 indexed)
Tracker 		Default
Server 			solr_server_name
Server index status 	There are 0 items indexed on the server for this index. (More information)
Cron batch size 	During cron runs, 50 items will be indexed per batch.

Update search_api_solr to 3.x-dev

cd /var/www/siteDir

sudo -u www-data composer require "drupal/search_api_solr:3.x-dev" --dev "solarium/solarium:^4.3.0-alpha.2" --dev
sudo -u www-data composer update "strawberryfield/strawberryfield"
sudo -u www-data vendor/drush/drush/drush cr
sudo -u www-data vendor/drush/drush/drush updatedb
sudo -u www-data vendor/drush/drush/drush cr
sudo -u www-data vendor/drush/drush/drush search-api-clear
sudo -u www-data vendor/drush/drush/drush search-api-index