From Installing Xcode To Running Fluentd On Mac

1. Install Xcode    [download]
2. Install Command Line Developer Tools
   Xcode: [Preferences] -> [Downloads] -> [Command Line Tools]
3. Install MacPorts    [installation guide]
4. Install RVM (Ruby Version Manager)    [installation guide]

   $ \curl -L https://get.rvm.io | bash -s stable --ruby
   

5. Apply RVM's configuration

   $ . ~/.bash_profile
   
   $ which rvm
   /Users/takahiko/.rvm/bin/rvm
   

6. Install Ruby 2.0    [ruby homepage]

   # 2.0.0-p247 is the latest version on Oct 11, 2013.
   $ sudo rvm install ruby-2.0.0-p247
   
   $ which ruby
   /Users/takahiko/.rvm/rubies/ruby-2.0.0-p247/bin/ruby
   
   $ ruby --version
   ruby 2.0.0p247 (2013-06-27 revision 41674) [x86_64-darwin12.3.0]
   

7. Update gem

   $ which gem
   /Users/takahiko/.rvm/rubies/ruby-2.0.0-p247/bin/gem
   
   $ gem update --system
   

8. Install fluentd    [fluentd homepage]

   $ gem install fluentd
   
   $ which fluentd
   /Users/takahiko/.rvm/gems/ruby-2.0.0-p247/bin/fluentd
   

9. Setup fluentd

   $ fluentd --setup ./fluentd
   

10. Run fluentd

    $ fluentd -c ./fluentd/fluent.conf
    

11. Send a log message to fluentd

    $ curl http://localhost:8888/debug.http -F \
      'json={"greeting":"hello"}'
    # You'll see some output in fluentd's console.