System.out %d [%t] %-5p %C{25}:%L - %m %n utf-8 ERROR UTF-8 ${IOTDB_HOME}/logs/log_backup.log ${IOTDB_HOME}/logs/log-backup-%d{yyyyMMdd}.log.gz 30 true %d [%t] %-5p %C{25}:%L - %m %n utf-8 INFO