# Logstash plugin development problem
**URL:** https://discuss.elastic.co/t/logstash-plugin-development-problem/86240
**Category:** Logstash
**Created:** [May 18, 2017, 10:45am UTC](https://discuss.elastic.co/t/logstash-plugin-development-problem/86240 "2017-05-18T10:45:46Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@iheb](https://discuss.elastic.co/u/iheb)
#### Post date: [May 18, 2017, 10:45am UTC](https://discuss.elastic.co/t/logstash-plugin-development-problem/86240/1 "2017-05-18T10:45:46Z")
I'm trying to develop an input plugin for logstash.
i've used this tutorial
> **[How to write a Logstash plugin - EagerElk](http://blog.eagerelk.com/how-to-write-a-logstash-plugin/)**
>
> A short guide on how to write a Logstash plugin.
the problem that i've had when i tried to install "bundle" using "bundle install"
_- this is the error message_
**Your Ruby engine is ruby, but your Gemfile specified jruby**
_- Gemfile:_
**source '[https://rubygems.org](https://rubygems.org)'**
**ruby '2.2.0', :engine =\> 'jruby', :engine\_version =\> '2.3.1'**
**gemspec**
_- ruby -v :_
**ruby 2.2.0p0 (2014-12-25 revision 49005) [x86\_64-darwin16]**
_- jruby -v :_
**jruby 9.1.8.0 (2.3.1) 2017-03-06 90fc7ab Java HotSpot(TM) 64-Bit Server VM 25.92-b14 on 1.8.0\_92-b14 +jit [darwin-x86\_64]**
What am I doing wrong here?
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [June 15, 2017, 10:45am UTC](https://discuss.elastic.co/t/logstash-plugin-development-problem/86240/2 "2017-06-15T10:45:56Z")
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