gistfile1.txt

#!/usr/bin/env python
# Copyright 2012 Rackspace

# All Rights Reserved.
#
#    Licensed under the Apache License, Version 2.0 (the "License"); you may
#    not use this file except in compliance with the License. You may obtain
#    a copy of the License at
#
#         http://www.apache.org/licenses/LICENSE-2.0
#
#    Unless required by applicable law or agreed to in writing, software
#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
#    License for the specific language governing permissions and limitations
#    under the License.

import os
import sys
import pyrax
from os.path import expanduser
home = expanduser("~")
pyrax.set_setting("identity_type", "rackspace")
creds_file = os.path.expanduser("~/.rackspace_cloud_credentials")
pyrax.set_credential_file(creds_file)
cs = pyrax.cloudservers

# Get the generator of limits
cslimits = cs.limits.get()
# Convert the generator to a list
cslimits_list = [rate for rate in cslimits.absolute]
# Pull out max_ram api limit and total used ram from list
max_ram = [x.value for x in cslimits_list if x.name == "maxTotalRAMSize"][0]
total_ram = [x.value for x in cslimits_list if x.name == "totalRAMUsed"][0]
#Get the percent ram used and round it up for clean output
percent_ram = (float(total_ram) / float(max_ram)) * 100
percent_ram_used = round(float(("%.2f" % percent_ram)))

#test percent ram used against threshold
#Print status and metric lines that Cloud Monitoring Agent Plugin needs
if percent_ram_used < 90.0:
  print "status ok Percent RAM Used", percent_ram_used
	print "metric percent_ram_used float", percent_ram_used
else:
	print "status err Percent RAM Used", percent_ram_used
	print "metric percent_ram_used float", percent_ram_used