AWS VPC fog snippets

snippets.md

Find a RouteTable for a given public Subnet:

subnet = Fog::Compute["aws"].subnets.last
subnet_id = subnet.subnet_id

rts = Fog::Compute["aws"].route_tables
route_table_for_subnet = rts.find {|rt| rt.associations.find {|assoc| assoc["subnetId"] == subnet_id} }

If route_table_for_subnet is nil then the subnet is private.

Or run the vpc_subnets.rb script:

$ ruby subnets.rb
subnet-825d74d4: private
subnet-835d74d5: public

vpc_subnets.rb

require "fog"

credentials = {
  provider: "AWS",
  aws_access_key_id: "KEY",
  aws_secret_access_key: "SECRET"

}

compute = Fog::Compute.new(credentials)
compute.subnets.each do |subnet|
  print "#{subnet.subnet_id}: "
  subnet_id = subnet.subnet_id

  rts = compute.route_tables
  route_table_for_subnet = rts.find {|rt| rt.associations.find {|assoc| assoc["subnetId"] == subnet_id} }
  puts route_table_for_subnet ? "public" : "private"
end