# Using zeromq out put failed due to 'zmq\_ctx\_new' nout found

**URL:** <https://discuss.elastic.co/t/using-zeromq-out-put-failed-due-to-zmq-ctx-new-nout-found/49380>\
**Category:** Logstash\
**Created:** [May 6, 2016, 8:17am UTC](https://discuss.elastic.co/t/using-zeromq-out-put-failed-due-to-zmq-ctx-new-nout-found/49380 "2016-05-06T08:17:50Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![mizeng](https://avatars.discourse-cdn.com/v4/letter/m/85e7bf/32.png) [@mizeng](https://discuss.elastic.co/u/mizeng)\
**Post date:** [May 6, 2016, 8:17am UTC](https://discuss.elastic.co/t/using-zeromq-out-put-failed-due-to-zmq-ctx-new-nout-found/49380/1 "2016-05-06T08:17:50Z")

</div>

Hi dears, I've using logstash config file as below

```auto
output {
 zeromq {
  address => ['tcp://127.0.0.1:2120']
  topology => "pushpull"
 }
}

```

But met error as below:

```auto
FFI::NotFoundError: Function 'zmq_ctx_new' not found in [libzmq.so]
  attach_function at /home/mizeng/logstash-2.3.1/vendor/jruby/lib/ruby/shared/ffi/library.rb:241
           LibZMQ at /home/mizeng/logstash-2.3.1/vendor/bundle/jruby/1.9/gems/ffi-rzmq-core-1.0.4/lib/ffi-rzmq-core/libzmq.rb:76
           (root) at /home/mizeng/logstash-2.3.1/vendor/bundle/jruby/1.9/gems/ffi-rzmq-core-1.0.4/lib/ffi-rzmq-core/libzmq.rb:6
          require at org/jruby/RubyKernel.java:1040
          require at /home/mizeng/logstash-2.3.1/vendor/bundle/jruby/1.9/gems/polyglot-0.3.5/lib/polyglot.rb:65
           (root) at /home/mizeng/logstash-2.3.1/vendor/bundle/jruby/1.9/gems/ffi-rzmq-core-1.0.4/lib/ffi-rzmq-core.rb:1
          require at org/jruby/RubyKernel.java:1040
          require at /home/mizeng/logstash-2.3.1/vendor/bundle/jruby/1.9/gems/polyglot-0.3.5/lib/polyglot.rb:65
           (root) at /home/mizeng/logstash-2.3.1/vendor/bundle/jruby/1.9/gems/ffi-rzmq-core-1.0.4/lib/ffi-rzmq-core.rb:3
          require at org/jruby/RubyKernel.java:1040
          require at /home/mizeng/logstash-2.3.1/vendor/bundle/jruby/1.9/gems/polyglot-0.3.5/lib/polyglot.rb:65
           (root) at /home/mizeng/logstash-2.3.1/vendor/bundle/jruby/1.9/gems/ffi-rzmq-2.0.4/lib/ffi-rzmq.rb:1
           (root) at /home/mizeng/logstash-2.3.1/vendor/bundle/jruby/1.9/gems/ffi-rzmq-2.0.4/lib/ffi-rzmq.rb:66
           (root) at /home/mizeng/logstash-2.3.1/vendor/bundle/jruby/1.9/gems/logstash-output-zeromq-2.0.4/lib/logstash/outputs/zeromq.rb:1
             each at org/jruby/RubyArray.java:1613
         register at /home/mizeng/logstash-2.3.1/vendor/bundle/jruby/1.9/gems/logstash-output-zeromq-2.0.4/lib/logstash/outputs/zeromq.rb:64
         register at /home/mizeng/logstash-2.3.1/vendor/bundle/jruby/1.9/gems/logstash-core-2.3.1-java/lib/logstash/output_delegator.rb:75
    start_workers at /home/mizeng/logstash-2.3.1/vendor/bundle/jruby/1.9/gems/logstash-core-2.3.1-java/lib/logstash/pipeline.rb:181

```

My environment is:  
Ubuntu 12.04  
libzmq-dev 2.1.11-1ubuntu1  
logstash 2.3.2

Is there anything I miss to cause this failure?

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 6, 2017, 4:59am UTC](https://discuss.elastic.co/t/using-zeromq-out-put-failed-due-to-zmq-ctx-new-nout-found/49380/2 "2017-07-06T04:59:04Z")

</div>