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Configuring Apache Solr Search and Facets in CLAW.md

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(Note that these instructions are outdated as some of the modules have been enabled in CLAW by default and the default CLAW solr instance has the right configurations.)

Configuring Apache Solr Search and Facets in CLAW

Required Modules

Steps

Step 1 - Install Apache Solr Search module

  • Go to ubuntu@claw:/var/www/html/drupal$
  • Download search_api_solr module
  • Issue the following command composer require drupal/search_api_solr to install the required dependencies
  • Enable search_api_solr module
  • Optionally, also enable Solr Search Defaults submodule to make the configuration process easier

Step 2 - Configuring Apache Solr Core on the server

The default core that comes with the current vagrant does not have the configuration expected by Drupal, thus for now we will create a new Apache core and copy the expected configurations.

  • Verify that solr is available here: http://localhost:8983/solr/
  • Go to Cores Admin http://localhost:8983/solr/#/~cores
  • Add a core called CLAW2. It will produce an error with message similar to the following message, you can ignore that message for now: Error CREATEing SolrCore 'CLAW2': Unable to create core [new_core] Caused by: Can't find resource 'solrconfig.xml' in classpath or '/opt/solr-6.2.1/server/solr/CLAW2'
  • Go to cd /opt/solr-6.2.1/server/solr/
  • Create a directory with the same name as the new core mkdir CLAW2
  • Inside CLAW2, create a config directory and a data directory
  • Go into the config directory and copy solr 6.x configuration from the module: cp -R /var/www/html/drupal/web/modules/contrib/search_api_solr/solr-conf/6.x/* ./
  • Go to the bin directory: /opt/solr-6.2.1/bin and restart the server by issuing the following commands:
./solr stop -p 8983 
./solr start -p 8983

Step 3 - Configure the Apache Solr server in Drupal

  • Go to search api configuration page: http://localhost:8000/admin/config/search/search-api
  • Click the Add server button
  • Provide a name, select solr back end
  • Under the field set titled "Configure Solr backend", check Standard option for Solr Connection
  • Verify the values in the standard connection fields, ensure to set the Solr core name with the value of the newly created/configured core
  • Save. If the configuration is working as expected, you should see a checkmark status for server.

Step 4 - Configure the Apache Solr index in Drupal

  • Go to search api configuration page: http://localhost:8000/admin/config/search/search-api
  • CLAW vagrant does come with a default index called "Default Solr content index"
  • Edit the default solr content index
  • Chose the required data sources that need to be index
  • Ensure to select the above configured Apache Server as the server.
  • Also chose to Index items immediately
  • Save. If the configuration is working as expected, you should see a checkmark for status for index.
  • Once you save it, it will immediately index the current content.

Step 5 - Searching

  • Go to http://localhost:8000/search/node to search the index content

Step 6 - Setting up Faceted search

  • To get faceted search, enable the facets module
  • Follow the steps here under the section of "Make a Faceted Solr Search View" to configure a Facet

References