Trouble with using Logstash for the first time

I'm trying to use Logstash for the first time and I'm following the Docs in
After installing the latest 2.2 release (on Ubuntu 14.04 with Java >= 1.8.0_65 I use the command
bin/logstash -e 'input { stdin { } } output { stdout {} }'

to run a first test. I get the following exceptions
LoadError: load error: jopenssl/load -- java.lang.VerifyError: class org.bouncycastle.asn1.ASN1Primitive overrides final method equals.(Ljava/lang/Object;)Z
require at org/jruby/
(root) at /home/swissbib/Downloads/logstash/vendor/bundle/jruby/1.9/gems/jruby-openssl-0.9.13-java/lib/openssl.rb:1
require at org/jruby/
(root) at /home/swissbib/Downloads/logstash/vendor/bundle/jruby/1.9/gems/logstash-core-2.2.0-java/lib/logstash/patches/stronger_openssl_defaults.rb:1
require at org/jruby/
(root) at /home/swissbib/Downloads/logstash/vendor/bundle/jruby/1.9/gems/logstash-core-2.2.0-java/lib/logstash/patches/stronger_openssl_defaults.rb:2
require at org/jruby/
(root) at /home/swissbib/Downloads/logstash/vendor/bundle/jruby/1.9/gems/logstash-core-2.2.0-java/lib/logstash/patches.rb:1
require at org/jruby/
(root) at /home/swissbib/Downloads/logstash/vendor/bundle/jruby/1.9/gems/logstash-core-2.2.0-java/lib/logstash/patches.rb:5
require at org/jruby/
(root) at /home/swissbib/Downloads/logstash/lib/bootstrap/environment.rb:66

Same happens with using a simple configuration file as documented in

Any ideas what's going wrong?

Thanks for any hint


I solved the problem by myself. The CLASSPATH variable on my used laptops running on Ubuntu 14.04 referenced a customer jar with additional external jars where a not compatible version of class org.bouncycastle.asn1.ASN1Primitive is used. Unfortunately this was the case on two different devices I used for my first test case with Logstash.

Removing the jar in question from the classpath solved the problem.

While I needed some time to get the trick I saw a lot of other people describing nearly the similar problem. Maybe it would help if you include a note in your documentation.

The exception was thrown when I made my first steps with the tar version of Logstash (running my user shell) and of course didn't appear when I installed the deb package version. But for a newbie on the field of Logstash it's not obvious what might be the problem because I followed the documented steps to be done when Logstash is installed with the tar file.