Unable to start rails server

I have installed rails and mysql. I have also installed mysql2 gem. I created a rails application by the command
rails new try_cms -d mysql
It was created successfully. But when I try to run the WEBrick server using rails server command I get the following errors.

/Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle: dlopen(/Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle, 9): Library not loaded: libmysqlclient.16.dylib (LoadError)
  Referenced from: /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle
  Reason: image not found - /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle
    from /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2.rb:7
    from /Library/Ruby/Gems/1.8/gems/bundler-1.0.9/lib/bundler/runtime.rb:68:in `require'
    from /Library/Ruby/Gems/1.8/gems/bundler-1.0.9/lib/bundler/runtime.rb:68:in `require'
    from /Library/Ruby/Gems/1.8/gems/bundler-1.0.9/lib/bundler/runtime.rb:66:in `each'
    from /Library/Ruby/Gems/1.8/gems/bundler-1.0.9/lib/bundler/runtime.rb:66:in `require'
    from /Library/Ruby/Gems/1.8/gems/bundler-1.0.9/lib/bundler/runtime.rb:55:in `each'
    from /Library/Ruby/Gems/1.8/gems/bundler-1.0.9/lib/bundler/runtime.rb:55:in `require'
    from /Library/Ruby/Gems/1.8/gems/bundler-1.0.9/lib/bundler.rb:114:in `require'
    from /Users/dilippednekar/Sites/try_cms/config/application.rb:7
    from /Library/Ruby/Gems/1.8/gems/railties-3.0.3/lib/rails/commands.rb:28:in `require'
    from /Library/Ruby/Gems/1.8/gems/railties-3.0.3/lib/rails/commands.rb:28
    from /Library/Ruby/Gems/1.8/gems/railties-3.0.3/lib/rails/commands.rb:27:in `tap'
    from /Library/Ruby/Gems/1.8/gems/railties-3.0.3/lib/rails/commands.rb:27
    from script/rails:6:in `require'
    from script/rails:6

Thanks in advance.


Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve the issue immediately. So please treat them as advisements. If you found the post helpful (or not), leave a comment & I’ll get back to you as soon as possible.

Method 1

Try running this (see similar question here)

sudo install_name_tool -change libmysqlclient.16.dylib /usr/local/mysql/lib/libmysqlclient.16.dylib /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle

Method 2

Just ran into this problem myself. Make sure you update the version numbers.

sudo install_name_tool -change libmysqlclient.18.dylib /usr/local/mysql/lib/libmysqlclient.18.dylib /Library/Ruby/Gems/1.8/gems/mysql2-0.2.7/lib/mysql2/mysql2.bundle

Method 3

For some reason the mysql2.bundle file was not in my mysql2 gem. I ran

 gem uninstall mysql2

and the gem was uninstalled. Then I immediately ran

sudo gem install mysql2


sudo install_name_tool -change libmysqlclient.16.dylib /usr/local/mysql/lib/libmysqlclient.16.dylib /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle

Finally rails s launched the server!

Method 4

I had similar problems. The solutio that worked for me was found here.

Method 5

If you want something a little less intrusive, just set the DYLD_LIBRARY_PATH environment variable in your MySQL’s lib direction.


Method 6

I was just hit with this using Rails 3.1.0, ruby-1.9.2-p290 and mysql2 0.3.7. My solution was to downgrade to mysql 2.8.1. Everything looks good so far (I wasn’t even able to start the environment).

Method 7

sudo apt-get install libmysqlclient15-dev libmysqlclient15off libmysql-ruby

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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