There is a search subsystem and it can be used to connect to Search Services (which is based on Solr 6).
Just like all previous versions of Solr, the activation and configuration of the Search Services subsystem can be done by using either the alfresco-global.properties file or the Admin Console (see Configure using the Admin Console).
Note: The Admin Console is only available for users who are using Alfresco
Content Services Enterprise.
If you haven’t set the following Solr-related properties in the TOMCAT_HOME>/shared/classes/alfresco-global.properties file, add these:
### Solr indexing ### index.subsystem.name=solr6 solr.secureComms=https solr.port=8983 solr.host=<hostname> [The host name where the Solr instance is located] solr.baseUrl=/solr
These configuration properties are used by Alfresco Content Services to talk to Search Services.