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Editorial Team
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Asked: 2026-06-01T11:13:50+00:00

I wrote a bash script to start thin server for two projects. #! /bin/sh

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I wrote a bash script to start thin server for two projects. 

#! /bin/sh
cd /path/to/my/project_1
thin -e production -p 3000 --daemonize -s 10 start

Then placed it in /etc/init.d/start_thin. Gave it 755 permissions. Ran:

sudo update-rc.d  start_thin defaults.

then

sudo reboot

Thin is not started. Thanks.

UPDATE:

After a long fight, I found this error which only happens when thin is started with /etc/init.d/thin:

Writing PID to tmp/pids/thin.3000.pid
Using rails adapter /path/.rvm/gems/ruby-1.9.2-p290/gems/mysql2-0.3.11/lib/mysql2/mysql2.so:
[BUG] Segmentation fault ruby 1.8.7 (2010-08-16 patchlevel 302)
[i686-linux]

I guess now the only logical thing is to switch to the “normal” sql gem.

UPDATE 2:

I found this resource which helped me before, but can’t help now.

UPDATE 3:

I reinstalled RVM using the quick install. Now when the script on bootup runs, I see in the log that a gem is missing: multi_json-1.1.0. I installed it and put in the Gemfile. Did not help. Still, when I execute the bash script manually – no problem. Only on bootup it complains about multi_json-1.1.0.

UPDATE 4:

Only on startup, thin’s log file contains:

I don’t understand why it uses 1.8 gems, when i have ruby 1.9.2 installed 😕

>> Writing PID to tmp/pids/thin.3000.pid
>> Using rails adapter
>> Exiting!
/usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/spec_set.rb:87:in `materialize': Could not find multi_json-1.1.0 in any of the sources (Bundler::GemNotFound)
        from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/spec_set.rb:81:in `map!'
        from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/spec_set.rb:81:in `materialize'
        from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/definition.rb:90:in `specs'
        from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/definition.rb:135:in `specs_for'
        from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/definition.rb:124:in `requested_specs'
        from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/environment.rb:23:in `requested_specs'
        from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/runtime.rb:11:in `setup'
        from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler.rb:107:in `setup'
        from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.15/lib/bundler/setup.rb:17
        from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require'
        from /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:36:in `require'
        from /home/user1/myproj1/config/boot.rb:6
        from /home/user1/myproj1/config/application.rb:1:in `require'
        from /home/user1/myproj1/config/application.rb:1
        from /home/user1/myproj1/config/environment.rb:2:in `require'
        from /home/user1/myproj1/config/environment.rb:2
        from /usr/lib/ruby/1.8/rack/adapter/rails.rb:42:in `require'
        from /usr/lib/ruby/1.8/rack/adapter/rails.rb:42:in `load_application'
        from /usr/lib/ruby/1.8/rack/adapter/rails.rb:23:in `initialize'
        from /usr/lib/ruby/1.8/rack/adapter/loader.rb:36:in `new'
        from /usr/lib/ruby/1.8/rack/adapter/loader.rb:36:in `for'
        from /usr/lib/ruby/1.8/thin/controllers/controller.rb:163:in `load_adapter'
        from /usr/lib/ruby/1.8/thin/controllers/controller.rb:67:in `start'
        from /usr/lib/ruby/1.8/thin/runner.rb:174:in `send'
        from /usr/lib/ruby/1.8/thin/runner.rb:174:in `run_command'
        from /usr/lib/ruby/1.8/thin/runner.rb:140:in `run!'
        from /usr/bin/thin:6

So, naturally, I installed multi_json gem, then, bundle install, and, what do you think? Same old problem :).

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1 Answer

  1. Editorial Team

    I found the answer here.

    Added to the beginning these lines to my bash script:

    # Load RVM into a shell session *as a function*
if [[ -s "$HOME/.rvm/scripts/rvm" ]] ; then

  # First try to load from a user install
  source "$HOME/.rvm/scripts/rvm"

elif [[ -s "/usr/local/rvm/scripts/rvm" ]] ; then

  # Then try to load from a root install
  source "/usr/local/rvm/scripts/rvm"

else

  printf "ERROR: An RVM installation was not found.\n"

fi

rvm use 1.9.2

    In order to check that everything is correct, inside the bash and immediately below the mentioned code I used 

    type rvm | head -1

    If the above outputs: rvm is a function, then everything’s fine.

    NOTE: The same thing should go to the cron files if for some reason they don’t seem to work with RVM.

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