I just downloaded the new logstash version (5.2.1), and after starting it I noticed a warning message saying that log4j needs to be initialized properly. I also noticed that plugins like kafka, beats, etc, were not emitting any output log... I used this very simple command to reproduce the problem…

Carlos_Alexandre (Carlos Alexandre) February 22, 2017, 12:54pm 5

Any news on this?

I was hoping to hear from the logstash team...

WARN No appenders could be found for logger (org.apache.kafka.clients.consumer.ConsumerConfig)

Error regarding log4j: well worn topic

Elasticsearch is a trademark of Elasticsearch BV, registered in the U.S. and in other countries
Trademarks
Terms
Privacy
Brand
Code of Conduct

Apache, Apache Lucene, Apache Hadoop, Hadoop, HDFS and the yellow elephant logo are trademarks of the Apache Software Foundation in the United States and/or other countries.

Fresh logstash 5.2 install gives log4j warnings and no logging from plugins