# File lib/openshift-origin-controller/lib/openshift/mongo_data_store.rb, line 307
    def activate_district_node(uuid, server_identity)
      Rails.logger.debug "activate_district_node(#{uuid},#{server_identity})\n\n"
      update_district({"_id" => uuid, "server_identities" => {"$elemMatch" => {"name" => server_identity, "active" => false}}}, {"$set" => { "server_identities.$.active" => true}, "$inc" => { "active_server_identities_size" => 1 }})
    end