RubyMine remote debug breakpoint not working for 2.4.7, but works for 2.5.7



RubyMine 2020.1 remote debug works well with Rails app on 2.5.7, but it is not stopping at breakpoints for an App using 2.4.7 below are the versions of RubyMine, ruby-debug-ide and debase.If I pause randomly I do see the variables.

RubyMine 2020.1

bundle exec rdebug-ide --host --port 1234 --keep-frame-binding -d -- bin/rails s
Fast Debugger (ruby-debug-ide 0.7.2, debase, file filtering is supported) listens on




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could you please specify what kind of remote SDK you're using? Is it Docker, Vagrant or SSH based one? Which files are you debugging (Ruby scripts, Rails server, templates)? Do you have experimental debugger option turned on (Help - Find Action - Experimental Features)?

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Thanks for replying Olga, please find answers to your questions below:


1) Its a Docker image running on Kubernetes, I am using "kubectl port-forward" to forward port localhost:1234 to container on pod. This works for fine the using Ruby-2.5.7. The breakpoints work fine for sample_app. But breakpoints do not work for the 2.4.7 App using Puma. Pausing works fine.

2) ruby.use.experimental.debugger is enabled



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Also Olga, breakpoints works fine if I run rdebug-ide on the local machine, but on the remote Kubernetes machine it throws the following error. It does not throw this error if I omit the --despatcher-port 26162 argument.

Exception: Connection refused - connect(2) for "" port 26162
/usr/local/bundle/ruby/2.4.0/gems/socksify-1.7.1/lib/socksify.rb:178:in `initialize'
/usr/local/bundle/ruby/2.4.0/gems/socksify-1.7.1/lib/socksify.rb:178:in `initialize'
/usr/local/bundle/ruby/2.4.0/gems/ruby-debug-ide-0.7.2/lib/ruby-debug-ide.rb:201:in `open'
/usr/local/bundle/ruby/2.4.0/gems/ruby-debug-ide-0.7.2/lib/ruby-debug-ide.rb:201:in `block in notify_dispatcher_if_needed'
/usr/local/bundle/ruby/2.4.0/gems/ruby-debug-ide-0.7.2/lib/ruby-debug-ide.rb:199:in `times'
/usr/local/bundle/ruby/2.4.0/gems/ruby-debug-ide-0.7.2/lib/ruby-debug-ide.rb:199:in `notify_dispatcher_if_needed'
/usr/local/bundle/ruby/2.4.0/gems/ruby-debug-ide-0.7.2/lib/ruby-debug-ide.rb:146:in `block in _start_control_common'

/usr/local/bundle/ruby/2.4.0/gems/ruby-debug-ide-0.7.2/lib/ruby-debug-ide.rb:160:in `block in _start_control_common'

9241: Processing in control: detach
[9241] - Worker 0 (pid: 9451) booted, phase: 0

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Phew! finally fixed, did the following to fix it:

  • disabled puma threads
  • removed byebug from Gemlock

Loving it! being a long time Eclipse/IntellJ Java/Python developer, RubyMine is the saving grace for developers like me in Ruby Env :)

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Hi Olga,

I am facing the same issue, I am trying to run a rake task using bundle exec with ssh based ruby

RUBY VERSION: 2.2.10 (2018-03-28 patchlevel 489) [x86_64-linux-gnu]

Could you please help me with this

I don't have puma or bybug in my environment though


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Raviteja2200 hello,

just to be sure, do you mean remote debug or running rake tasks with a remote Ruby SDK?

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Olga Kuvardina Yes I am using remote ruby sdk connected over SSH.

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Raviteja2200 could you please specify what doesn't work and what kind of error you get?


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