Server Script for populating a EC2 Name Server

ec2_storing_its_address.rb

require  'json'
#Get Instance IP Address
my_ip = `curl -s http://instance-data/latest/meta-data/public-ipv4`

#not real names
my_server_name = "MyServer"
bootstrap_db = "http://my_iris.iriscouch.com/bootie"

#url for the record data
record_loc = bootstrap_db + "/" + my_server_name

#get rev of current record
data_raw = `curl -s GET #{record_loc}`
data = JSON.parse(data_raw)
rev = data["_rev"]

#update database to current value
new_record = {
  "_id" => my_server_name,
  "_rev" => rev,
  "ip" => my_ip
}
new_record_json = new_record.to_json
resp = `curl -s --request PUT #{record_loc} -Hcontent-type:application/json -d \'#{new_record_json}\'