使用 RubyMine 在 Kubernetes 上远程调试 Rails 应用程序

问题描述

我正在尝试调试在 k8s 集群中运行的 rails 应用程序。

使用的堆栈如下：Ruby '2.6.6' - Docker Engine v20.10.2 - Kubernetes v1.19.3 - Skaffold v1.17.2 - MacOS BigSur 11.1

Skaffold 正在运行 skaffold dev --port-forward

在 Dockerfile 中，我有 CMD ["rdebug-ide","--debug","--host","0.0.0.0","--port","1234","--dispatcher-port","5884","--","bin/bundle","exec","rails","s"]

这个应用的服务 yaml 是这样的：

apiVersion: v1
kind: Service
Metadata:
  name: system-management-srv
spec:
  selector:
    app: system-management
  ports:
    - name: system-management
      port: 3000
    - name: debug
      port: 1234

当我启动“RemoteDebug”配置时，它可以检测到断点，但输出错误是：

[system-management] Connected from local client
[system-management] 1: Starting control thread
[system-management] 1: Processing in control: b /project/app/controllers/api/v1/services_controller.rb:25
[system-management] 1: <breakpointAdded no="1" location="/project/app/controllers/api/v1/services_controller.rb:25"/>
[system-management] 1: Processing in control: b /project/app/controllers/api/v1/services_controller.rb:28
[system-management] 1: <breakpointAdded no="2" location="/project/app/controllers/api/v1/services_controller.rb:28"/>
[system-management] 1: Processing in control: b /project/app/controllers/api/v1/services_controller.rb:29
[system-management] 1: <breakpointAdded no="3" location="/project/app/controllers/api/v1/services_controller.rb:29"/>
[system-management] 1: Processing in control: b /project/app/controllers/api/v1/services_controller.rb:27
[system-management] 1: <breakpointAdded no="4" location="/project/app/controllers/api/v1/services_controller.rb:27"/>
[system-management] 1: Processing in control: b /project/app/controllers/api/v1/services_controller.rb:7
[system-management] 1: <breakpointAdded no="5" location="/project/app/controllers/api/v1/services_controller.rb:7"/>
[system-management] 1: Processing in control: b /project/app/controllers/api/v1/services_controller.rb:24
[system-management] 1: <breakpointAdded no="6" location="/project/app/controllers/api/v1/services_controller.rb:24"/>
[system-management] 1: Processing in control: b /project/app/controllers/api/v1/services_controller.rb:11
[system-management] 1: <breakpointAdded no="7" location="/project/app/controllers/api/v1/services_controller.rb:11"/>
[system-management] 1: Processing in control: start
[system-management] 1: Starting: running program script
[system-management] /usr/local/bundle/gems/ruby-debug-ide-0.7.2/lib/ruby-debug-ide/multiprocess/starter.rb:3:in `<top (required)>': undefined method `split' for nil:NilClass (NoMethodError)
[system-management]     from bin/rails:1:in `require'
[system-management] Fast Debugger (ruby-debug-ide 0.7.2,debase 0.2.4.1,file filtering is supported) listens on 0.0.0.0:1234
WARN[3324] exit status 1                                
[system-management] error: unexpected EOF

我怎样才能让它工作？

编辑：

我尝试添加

ENV DEBUGGER_STORED_RUBYLIB ''
ENV RUBYLIB ''

按照here的建议，但仍然面临错误

    [system-management] 1: Processing in control: b /project/app/controllers/api/v1/services_controller.rb:11
    [system-management] 1: <breakpointAdded no="7" location="/project/app/controllers/api/v1/services_controller.rb:11"/>
    [system-management] 1: Processing in control: start
    [system-management] 1: Starting: running program script
    [system-management] 1: connection Failed(1)
    [system-management] Exception: Connection refused - connect(2) for "127.0.0.1" port 5884
    [system-management]     /usr/local/bundle/gems/ruby-debug-ide-0.7.2/lib/ruby-debug-ide.rb:201:in `initialize'
    [system-management]     /usr/local/bundle/gems/ruby-debug-ide-0.7.2/lib/ruby-debug-ide.rb:201:in `open'
    [system-management]     /usr/local/bundle/gems/ruby-debug-ide-0.7.2/lib/ruby-debug-ide.rb:201:in `block in notify_dispatcher_if_needed'
    [system-management]     /usr/local/bundle/gems/ruby-debug-ide-0.7.2/lib/ruby-debug-ide.rb:199:in `times'
    [system-management]     /usr/local/bundle/gems/ruby-debug-ide-0.7.2/lib/ruby-debug-ide.rb:199:in `notify_dispatcher_if_needed'
    [system-management]     /usr/local/bundle/gems/ruby-debug-ide-0.7.2/lib/ruby-debug-ide.rb:146:in `block in _start_control_common'
[system-management] Fatal exception in DebugThread loop: undefined method `accept' for 3:Integer
[system-management] Backtrace:
[system-management] /usr/local/bundle/gems/ruby-debug-ide-0.7.2/lib/ruby-debug-ide.rb:160:in `block in _start_control_common'
[system-management] Fast Debugger (ruby-debug-ide 0.7.2,file filtering is supported) listens on 0.0.0.0:1234

解决方法

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