Apache-Solr-Add-Core.md

Apache Solr : Add Core

Apache Solr works with multiple core's as indexing instances. This describes how to create a new core.

Create new core

Adding a new core to Solr is simple.

Run the following command to add a new core:

solr create -c CORE_NAME

The command line output will indicate that the new core is added:

Created new core 'CORE_NAME'

The new core will be located at:

$(brew --prefix)/var/lib/solr/CORE_NAME

Note : Solr must be running to create a core through command line because it uses the web API for it.

Example creating new core 'my_site' using command:

Request: http://localhost:8983/solr/admin/cores?action=CREATE&name=my_site&instanceDir=my_site

Response:

{
  "responseHeader":{
    "status":0,
    "QTime":1017
  },
  "core":"my_site"
}

The new core will be available at: http://localhost:8983/solr/my_site.

Update the configuration

The new core has the default Solr schema and configuration. We need a different configuration for Drupal.

The configuration depends on the used Drupal search modules:

search_api_solr

The Search API Solr module contains a folder with sets of configuration files depending on the Solr version. Those files are located at: /path/to/sites/all/modules/contrib/search_api_solr/solr-conf-templates.

Note : Search api Solr 3.x generates the config files based on the solr configuration. Download these files trough the UI and put those in the proper Solr core directory.

Copy all those files to the configuration.

cp -r /path/to/sites/all/modules/contrib/search_api_solr/solr-conf-templates/8.x/* $(brew --prefix)/var/lib/solr/CORE_NAME/conf/

Restart Solr to pick up the new configuration.

solr restart