I had this problem on the docker image I pulled 2 weeks ago.
I didn't specify a version and docker pulled the latest.
It took me many hours to debug until I saw the error using 'docker logs -f logstash' and saw right away the 'UDP listener died' error message. I thought I had a corrupt logstash.conf file, but it looked ok.
Then, I found this thread.
As of 2018/05/08, the 'docker pull logstash' still pulls down 5.6.9. And it still has the problem.
To workaround, I pulled logstash:5.6.8 (docker pull logstash:5.6.8) and run it. It works fine.
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.