gistfile1.rb

require 'fog'

def start_server
  Fog::Compute[:aws].servers.bootstrap(
    :provider          => "AWS",
# EBS-backed
#   :image_id          => "ami-63be790a"
# Ephermal
    :image_id          => "ami-fbbf7892",
    :availability_zone => "us-east-1b",
    :flavor_id         => "m1.large",
#   :flavor_id         => "m1.xlarge",
    :key_name          => "my_fog",
    :private_key_path  => "~/.ssh/my_fog.pem",
    :username          => "ubuntu",
# Security group that allows SSH + all TCP/UDP within security group
    :groups            => ["mydefault"]
)
end

num=3

servers = Array.new(num)

# Launch nodes
num.times do |i|
  puts "Launching server #{i}"
  servers[i] = start_server()
end

# Setup riak + join
num.times do |i|
  server = servers[i]
  puts "server #{i}: waiting"
  server.wait_for { ready? }
  puts "server #{i}: downloading riak package"
  server.ssh("wget http://downloads.basho.com/riak/riak-1.0.0/riak_1.0.0-1_amd64.deb")
  server.scp("reip.sh", "reip.sh")
  puts "server #{i}: setting up + launching riak"
  server.ssh("sudo dpkg -i riak_1.0.0-1_amd64.deb")
  server.ssh("sudo sh reip.sh #{server.private_ip_address}")
  server.ssh("sudo riak start")
  if(i > 0)
    first = "riak@#{servers[0].private_ip_address}"
    puts "server #{i}: joining to #{first}"
    server.ssh("sudo riak-admin join #{first}")
  end
end

puts "To login:"
servers.each do |server|
  puts "ssh -i ~/.ssh/my_fog.pem ubuntu@#{server.dns_name}"
end

reip.sh

IP=$1
FILE=app.config
mv /etc/riak/${FILE} /etc/riak/${FILE}.old; sed s/127.0.0.1/${IP}/ /etc/riak/${FILE}.old > /etc/riak/${FILE}

FILE=vm.args
mv /etc/riak/${FILE} /etc/riak/${FILE}.old; sed s/127.0.0.1/${IP}/ /etc/riak/${FILE}.old > /etc/riak/${FILE}