bin/dev crashes on new app

[diegomichel]

On Mac when using the bin/dev script the web server crashes, here are the logs. Please excuse me if this is not the correct gem to report this :).

~/github/pmt (4-testing-tools ✗) bin/dev
00:06:49 web.1  | started with pid 45581
00:06:49 js.1   | started with pid 45582
00:06:49 css.1  | started with pid 45583
00:06:49 js.1   | yarn run v1.22.15
00:06:49 css.1  | yarn run v1.22.15
00:06:49 js.1   | $ esbuild app/javascript/*.* --bundle --sourcemap --outdir=app/assets/builds --public-path=/assets --watch
00:06:49 css.1  | $ tailwindcss -i ./app/assets/stylesheets/application.tailwind.css -o ./app/assets/builds/application.css --minify --watch
00:06:50 js.1   | [watch] build finished, watching for changes...
00:06:50 web.1  | DEBUGGER: Debugger can attach via UNIX domain socket (/var/folders/kv/16w8qw0d0dxg1nnm0lc34glc0000gn/T/ruby-debug-sock-501/ruby-debug-diegomichelrubioramirez-45584)
00:06:50 web.1  | #<Thread:0x000000010d938240@DEBUGGER__::Server::reader /Users/diegomichelrubioramirez/.rvm/gems/ruby-3.1.2/gems/debug-1.8.0/lib/debug/server.rb:44 run> terminated with exception (report_on_exception is true):
00:06:50 web.1  | /Users/diegomichelrubioramirez/.rvm/rubies/ruby-3.1.2/lib/ruby/3.1.0/socket.rb:1116:in `unix': too long unix socket path (109 bytes given but 104 bytes max) (ArgumentError)
00:06:50 web.1  |       from /Users/diegomichelrubioramirez/.rvm/rubies/ruby-3.1.2/lib/ruby/3.1.0/socket.rb:1116:in `unix_server_socket'
00:06:50 web.1  |       from /Users/diegomichelrubioramirez/.rvm/rubies/ruby-3.1.2/lib/ruby/3.1.0/socket.rb:1164:in `unix_server_loop'
00:06:50 web.1  |       from /Users/diegomichelrubioramirez/.rvm/gems/ruby-3.1.2/gems/debug-1.8.0/lib/debug/server.rb:500:in `accept'
00:06:50 web.1  |       from /Users/diegomichelrubioramirez/.rvm/gems/ruby-3.1.2/gems/debug-1.8.0/lib/debug/server.rb:49:in `block in activate'
00:06:50 web.1  | #<Thread:0x000000010d938010@DEBUGGER__::SESSION@server /Users/diegomichelrubioramirez/.rvm/gems/ruby-3.1.2/gems/debug-1.8.0/lib/debug/session.rb:179 aborting> terminated with exception (report_on_exception is true):
00:06:50 web.1  | /Users/diegomichelrubioramirez/.rvm/rubies/ruby-3.1.2/lib/ruby/3.1.0/socket.rb:1116:in `unix': too long unix socket path (109 bytes given but 104 bytes max) (ArgumentError)
00:06:50 web.1  |       from /Users/diegomichelrubioramirez/.rvm/rubies/ruby-3.1.2/lib/ruby/3.1.0/socket.rb:1116:in `unix_server_socket'
00:06:50 web.1  |       from /Users/diegomichelrubioramirez/.rvm/rubies/ruby-3.1.2/lib/ruby/3.1.0/socket.rb:1164:in `unix_server_loop'
00:06:50 web.1  |       from /Users/diegomichelrubioramirez/.rvm/gems/ruby-3.1.2/gems/debug-1.8.0/lib/debug/server.rb:500:in `accept'
00:06:50 web.1  |       from /Users/diegomichelrubioramirez/.rvm/gems/ruby-3.1.2/gems/debug-1.8.0/lib/debug/server.rb:49:in `block in activate'
00:06:50 web.1  | /Users/diegomichelrubioramirez/.rvm/rubies/ruby-3.1.2/lib/ruby/3.1.0/socket.rb:1116:in `unix': too long unix socket path (109 bytes given but 104 bytes max) (ArgumentError)
00:06:50 web.1  |       from /Users/diegomichelrubioramirez/.rvm/rubies/ruby-3.1.2/lib/ruby/3.1.0/socket.rb:1116:in `unix_server_socket'
00:06:50 web.1  |       from /Users/diegomichelrubioramirez/.rvm/rubies/ruby-3.1.2/lib/ruby/3.1.0/socket.rb:1164:in `unix_server_loop'
00:06:50 web.1  |       from /Users/diegomichelrubioramirez/.rvm/gems/ruby-3.1.2/gems/debug-1.8.0/lib/debug/server.rb:500:in `accept'
00:06:50 web.1  |       from /Users/diegomichelrubioramirez/.rvm/gems/ruby-3.1.2/gems/debug-1.8.0/lib/debug/server.rb:49:in `block in activate'
00:06:50 web.1  | exited with code 1
00:06:50 system | sending SIGTERM to all processes
00:06:50 css.1  | exited with code 1
00:06:50 js.1   | exited with code 1

Looks like env command on Procfile.dev might be causing the issue, probably an env var?

changing env RUBY_DEBUG_OPEN=true bin/rails server to just env bin/rails server fixes the issue 🤔 .

[phantomwhale]

I've been hitting a similar issue:

my-app-1 | 05:50:27 web.1  |   Rendered text template (Duration: 0.0ms | Allocations: 24)
my-app-1 | 05:50:27 web.1  | Completed 200 OK in 452ms (Views: 4.8ms | ActiveRecord: 2.8ms | Allocations: 28169)
my-app-1 | 05:50:27 web.1  |
my-app-1 | 05:50:27 web.1  |
my-app-1 | 05:50:27 web.1  | Started GET "/assets/fonts/Graphik-Medium-aeec9e6cbb82ed00c2bf827ef56ac0099bb39112.woff2" for 172.18.0.1 at 2023-08-28 05:50:27 +0000
my-app-1 | 05:50:27        | exited with code 0
my-app-1 | 05:50:27 system | sending SIGTERM to all processes
my-app-1 | 05:50:27 web.1  | [8] === puma shutdown: 2023-08-28 05:50:27 +0000 ===
my-app-1 | 05:50:27 web.1  | [8] - Goodbye!
my-app-1 | 05:50:27 web.1  | [8] - Gracefully shutting down workers...
my-app-1 | 05:50:27 js.1   | exited with code 1
my-app-1 | 05:50:27 web.1  | Not notifying due to an invalid api_key
my-app-1 | 05:50:27 css.1  | exited with code 1
my-app-1 | 05:50:27 web.1  | terminated by SIGTERM
my-app-1 exited with code 0

The exited with code 0 doesn't appear to be any of the sub-processes (as it has no name?) - but it seems to send the SIGTERM killer to all the running processes.

I'm running inside a docker container (with tty: true set) and have removed the ruby debug env var, but it still crashes.

I'm still using webpack, and note that it seems to take 30-40 seconds to build the assets every time I start up (which isn't ideal) - I wonder if that long build time causes something to be unresponsive and causes foreman to be marked for death? I have noted that if "left alone" after starting up, the process seems to no longer crash after 1-2 requests, whereas queueing up 2-3 requests whilst webpack is compiling seems to correlate with the server serving up one page, and then dying.

Nothing crashes when I run all my Procfile tasks in separate containers

[matt17r]

This is happening to me too... macOS Sonoma 14.1, Ruby 3.2.2 and Rails 7.1.1. No docker.

Like the OP, it seems to be caused by env RUBY_DEBUG_OPEN=true in Procfile.dev. If I remove that environment variable it starts up fine.

Reproducible on any new app that uses Foreman. For example:

rails new debug_test --javascript esbuild

[matt17r]

Figured it out @diegomichel. It's because we have long computer usernames. Ruby debug generates a socket name that is too long. Yours is 24 characters (diegomichelrubioramirez) and mine is 23 (matthewlindfieldseager). Suggest you close this issue and plus one the issue there.

@phantomwhale, your issue looks different. Ours was crashing at Rails startup, yours is crashing during the app lifecycle.