input { kafka { id => "input_kafka" bootstrap_servers => "source1:9092,source2:9092" group_id => "logstash-consumer" topics_pattern => "^test_topic" partition_assignment_strategy => "cooperative_sticky" auto_offset_reset => "latest" codec => json decorate_events => true } } filter{ mutate{ remove_field => ["@version","@timestamp"] //@version, timestamp 제거 } } output { kafka { bootstrap_servers =..