• An EC2 account with keypair (both public and private keys)
  By default rubber will configure your ec2 security groups for you
  See the EC2 docs for more details. Also see the FAQ if having ssh connection problems.

If installing as a gem, then “gem install rubber” takes care of all requirements, otherwise when using as a rails plugin, the following gems need to be installed:

• amazon-ec2: “sudo gem install amazon-ec2”
• AWS::S3: “sudo gem install aws-s3”
• Capistrano: “sudo gem install capistrano”
• nettica gem: “sudo gem install nettica” if using nettica to auto map instances to A records
• httparty gem: “sudo gem install httparty” if using zerigo to auto map instances to A records
• rails gem: “sudo gem install rails” to get generators for non-rails projects