Try to establish connection to the Geo DB only if config file is present

app/models/geo/base_registry.rb

 class Geo::BaseRegistry < ActiveRecord::Base
   self.abstract_class = true
 
-  if Gitlab::Geo.secondary_role_enabled?
+  if Gitlab::Geo.secondary_role_enabled? && Gitlab::Geo.geo_database_configured?
     establish_connection Rails.configuration.geo_database
   end
 end

lib/gitlab/geo.rb

@@ -50,6 +50,10 @@ module Gitlab
       Gitlab.config.geo_secondary_role['enabled']
     end
 
+    def self.geo_database_configured?
+      Rails.configuration.respond_to?(:geo_database)
+    end
+
     def self.license_allows?
       ::License.feature_available?(:geo)
     end

lib/gitlab/geo/health_check.rb

@@ -6,7 +6,7 @@ module Gitlab
 
         return '' unless Gitlab::Geo.secondary?
         return 'The Geo secondary role is disabled.' unless Gitlab::Geo.secondary_role_enabled?
-        return 'The Geo database configuration file is missing.' unless self.geo_database_configured?
+        return 'The Geo database configuration file is missing.' unless Gitlab::Geo.geo_database_configured?
         return 'The Geo node has a database that is not configured for streaming replication with the primary node.' unless self.database_secondary?
 
         database_version  = self.get_database_version.to_i
@@ -61,10 +61,6 @@ module Gitlab
           .first
           .fetch('pg_is_in_recovery') == 't'
       end
-
-      def self.geo_database_configured?
-        Rails.configuration.respond_to?(:geo_database)
-      end
     end
   end
 end