CODEWITHSUNDEEP
mysqlruby-on-railsrubyserver
zasman
zasman

Reputation: 486

Ruby on Rails: Permission denied - bind(2) for "0.0.0.0" port 80 (Errno::EACCES)

Steps to reproduce

  1. I created my database and migrated.
  2. I ran rails server.

This was the result:

[3957] Puma starting in cluster mode...
[3957] * Version 3.10.0 (ruby 2.5.1-p57), codename: Russell's Teapot
[3957] * Min threads: 5, max threads: 5
    [3957] * Environment: development
    [3957] * Process workers: 4
    [3957] * Preloading application
    [3957] * Listening on tcp://0.0.0.0:80
    Exiting
    Traceback (most recent call last):
            22: from bin/rails:4:in `<main>'
            21: from bin/rails:4:in `require'
            20: from /home/my_username/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/commands.rb:18:in `<top (required)>'
            19: from /home/my_usernam/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/command.rb:46:in `invoke'
            18: from /home/my_usernam/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/command/base.rb:65:in `perform'
            17: from /home/my_usernam/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.20.0/lib/thor.rb:387:in `dispatch'
            16: from /home/my_usernam/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.20.0/lib/thor/invocation.rb:126:in `invoke_command'
            15: from /home/my_usernam/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.20.0/lib/thor/command.rb:27:in `run'
            14: from /home/my_usernam/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/commands/server/server_command.rb:142:in `perform'
            13: from /home/my_usernam/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/commands/server/server_command.rb:142:in `tap'
            12: from /home/my_usernam/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/commands/server/server_command.rb:147:in `block in perform'
            11: from /home/my_usernam/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/commands/server/server_command.rb:53:in `start'
            10: from /home/my_usernam/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/rack-2.0.5/lib/rack/server.rb:297:in `start'
             9: from /home/my_usernam/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/puma-3.10.0/lib/rack/handler/puma.rb:69:in `run'
             8: from /home/my_usernam/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/puma-3.10.0/lib/puma/launcher.rb:183:in `run'
             7: from /home/my_usernam/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/puma-3.10.0/lib/puma/cluster.rb:397:in `run'
             6: from /home/my_usernam/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/puma-3.10.0/lib/puma/runner.rb:144:in `load_and_bind'
             5: from /home/my_usernam/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/puma-3.10.0/lib/puma/binder.rb:88:in `parse'
             4: from /home/my_usernam/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/puma-3.10.0/lib/puma/binder.rb:88:in `each'
             3: from /home/my_usernam/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/puma-3.10.0/lib/puma/binder.rb:105:in `block in parse'
             2: from /home/my_usernam/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/puma-3.10.0/lib/puma/binder.rb:270:in `add_tcp_listener'
             1: from /home/my_usernam/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/puma-3.10.0/lib/puma/binder.rb:270:in `new'
    /home/my_usernam/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/puma-3.10.0/lib/puma/binder.rb:270:in `initialize': Permission denied - bind(2) for "0.0.0.0" port 80 (Errno::EACCES)

Upvotes: 1

Views: 3195

Answers (1)

Jared Beck
Jared Beck

Reputation: 17528

Configure puma to use a different port.

# config/puma.rb
port(ENV.fetch('PORT', 3000))

In production set PORT=80, and in local development unset PORT.

Rails listens on port 3000 by default, you may have changed some setting to get it running on port 80 instead. Regular users cannot open ports below 1024. – meagar♦

Permission denied - bind(2) for "0.0.0.0" port 80 (Errno::EACCES)

Only root can bind ports below 1024. Do not run your local development server as root! Instead, configure a port above 1024.

Upvotes: 1

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