better error-message needed

[BBQigniter]

I now searched for hours for an error in one of my pipeline configs using the rabbitmq-output plugin, always wondering why I got following error:

[ERROR][logstash.outputs.rabbitmq] RabbitMQ connection error, will retry. {:error_message=>"Connection to localhost:5672 failed", :exception=>"MarchHare::ConnectionRefused"}

I also reconfigured rabbitmq-server to listen on localhost - but nothing helped until I realized that I had a typo in the IP address in the host-parameter :\

For gods sake - why is the output-plugin not logging something like????
[ERROR][logstash.outputs.rabbitmq] RabbitMQ connection error, will retry. {:error_message=>"Connection to 192.168.10.10:5672 failed", :exception=>"MarchHare::ConnectionRefused"}

The error message would have been much much clearer

[robbavey]

@BBQigniter I've opened up an issue in the underlying library that logstash uses for connectivity with rabbitmq.