# File lib/openshift-origin-controller/lib/openshift/mongo_data_store.rb, line 295
    def remove_district_node(uuid, server_identity)
      Rails.logger.debug "remove_district_node(#{uuid},#{server_identity})\n\n"
      hash = find_and_modify_district({
        :query => { "_id" => uuid, "server_identities" => {"$elemMatch" => {"name" => server_identity, "active" => false}}}, 
        :update => { "$pull" => { "server_identities" => {"name" => server_identity }}} })
      return hash != nil
    end