Find IP addresses on Swift rings.

install.sh

#!/bin/sh
# assume swift library, python-pip, rubygems, rspec, rake and serverspec is installed. 
# assume PATH contains /usr/local/bin

cp swift_ring_spec.rb /usr/local/bin
chmod +x /usr/local/bin/swift_ring_spec.rb
sudo pip install netifaces

swift_ring_spec.rb

require 'spec_helper'

describe command('verify_existence_ipaddr.py') do
  it { should return_exit_status 0 }
end

verify_existence_ipaddr.py

#!/usr/bin/python
import sys

from netifaces import ifaddresses, interfaces
from swift.common.ring import Ring

def all_ipaddresses():
  """ Returns all IP addresses on this server """
  return [ifaddresses(x)[2][0]['addr'] for x in interfaces()]

def devices_on_node():
  """ Returns all devices on this server in the rings """
  ifaddrs = all_ipaddresses()
  devs = []

  for i in ['account', 'container', 'object']:
    ring = Ring('/etc/swift/%s.ring.gz' % i)
    devs.append([dev for dev in ring.devs if dev['ip'] in ifaddrs])

  return devs

if __name__ == '__main__':
  devs = devices_on_node()
  if devs.__len__() > 0: exit(0)
  else: exit(1)