Occasionally, you must override the auto switching behavior in Acquia Search for specific reasons (which can include the following):
You are implementing a single search page returning results from several Drupal websites. For this approach, all websites must read and write to a single Solr index and use a module such as the Apache Solr Multisite Search module to power your search pages.
Your subscription level isn’t entitled to several Acquia Search Solr indexes, and you must write into your single, available index from several environments.
You must read/write access from a local- or non-Acquia-hosted website.
Important
Sharing a single Solr index across websites has risks. For more information, see Sharing Solr indexes in read/write mode.
To stop Acquia Search from enabling auto switching, use one of the following methods:
Using code overrides to set the Acquia Search Solr connection for Acquia Search
Using code overrides to set the Acquia Search Solr connection
Acquia Search subscribers can choose to manually configure the connections in
the settings.php file by overriding variables. For non-hosted subscribers,
setting these variables is the only available method to use multiple
Acquia Search Solr indexes.
Code override procedure
Note for Site Factory subscribers
Site Factory subscribers must modify the following provided code examples to
use $GLOBALS['gardens_site_settings']['env'] instead of
$_ENV['AH_SITE_ENVIRONMENT'], as the value of
$_ENV['AH_SITE_ENVIRONMENT'] changes during the code deployment
process.
Select the code override to use based on your installed Drupal version and the module in use, from the following tabs:
Disabling auto switching
Note for Site Factory subscribers
Site Factory subscribers must modify the following provided code examples to
use $GLOBALS['gardens_site_settings']['env'] instead of
$_ENV['AH_SITE_ENVIRONMENT'], as the value of
$_ENV['AH_SITE_ENVIRONMENT'] changes during the code deployment
process.
Code Override for Acquia Search
Setting $settings['acquia_search']['read_only'] to FALSE avoids auto
switching, causing the production Solr index to enforce read/write mode as
shown in the following code example:
$settings['acquia_search']['read_only'] = FALSE;