public int getConsensusPort() {
    return Integer.parseInt(systemProperties.getProperty(IoTDBConstant.CN_CONSENSUS_PORT));
  }
config_node_list of confignode-system.properties

@throws BadNodeUrlException loadConfigNodeList()
@throws IOException loadConfigNodeList()
iotdb-core/confignode/src/main/java/org/apache/iotdb/confignode/conf/ConfigNodeRemoveCheck.java