A snippet for deploying to multiple servers at once

Capfile

# Load DSL and set up stages
require 'capistrano/setup'

# Include default deployment tasks
require 'capistrano/deploy'

require "capistrano/scm/git"
install_plugin Capistrano::SCM::Git

# -8<-------8<-------8<-------8<-------8<-------8<------
# include from here, after the git plugin

stage = ARGV[0]

multi_deployment = ['production', 'staging'].include?(stage)
if multi_deployment
  args = ARGV[1..-1]

  puts "MULTI DEPLOYMENT: #{stage}"
  puts "=" * 60
  puts ""
  files = Dir.glob("config/deploy/#{stage}*.rb").sort
  files.each do |file|
    name = file.sub('config/deploy/', '').sub('.rb', '')
    next if name == stage

    cmd = ['bundle', 'exec', 'cap', name] + args
    puts cmd.join(' ')
    puts "-" * 60
    system(*cmd)
    puts ""
  end
  exit
end

# ->8------->8------->8------->8------->8------->8------->8------

## rest of normal capile ...

With the snippet above it is possible to have multiple production/staging servers...
And makes it easy to deploy to all of them or per-server.

For example

• config/deploy/production1.rb
• config/deploy/production2.rb
• config/deploy/staging1.rb
• config/deploy/staging2.rb

You can deploy ALL servers of a given environemtn
Or a specific server individually

# to deploy to all production servers:  (it wil invoke several separate deployment!!)
bundle exec cap production deploy   

# for deploying to the first production server:
bundle exec cap production1 deploy   

# or deploying to the second staging server
bundle exec cap staging2 deploy