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ansible/plugins/inventory/nova.py

150 lines
4.1 KiB
Python

#!/usr/bin/python
"""
OpenStack external inventory script
=================================
Generates inventory that Ansible can understand by making API request to
OpenStack endpoint using the novaclient library.
NOTE: This script assumes Ansible is being executed where the environment
variables needed for novaclient have already been set on nova.ini file
For more details, see: https://github.com/openstack/python-novaclient
When run against a specific host, this script returns the following variables:
os_os-ext-sts_task_state
os_addresses
os_links
os_image
os_os-ext-sts_vm_state
os_flavor
os_id
os_rax-bandwidth_bandwidth
os_user_id
os_os-dcf_diskconfig
os_accessipv4
os_accessipv6
os_progress
os_os-ext-sts_power_state
os_metadata
os_status
os_updated
os_hostid
os_name
os_created
os_tenant_id
os__info
os__loaded
where some item can have nested structure.
"""
# (c) 2012, Marco Vito Moscaritolo <marco@agavee.com>
#
# This file is part of Ansible,
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
######################################################################
import sys
import re
import os
import ConfigParser
from novaclient import client as nova_client
try:
import json
except:
import simplejson as json
###################################################
# executed with no parameters, return the list of
# all groups and hosts
def nova_load_config_file():
p = ConfigParser.SafeConfigParser()
path1 = os.getcwd() + "/nova.ini"
path2 = os.path.expanduser(os.environ.get('ANSIBLE_CONFIG', "~/nova.ini"))
path3 = "/etc/ansible/nova.ini"
if os.path.exists(path1):
p.read(path1)
elif os.path.exists(path2):
p.read(path2)
elif os.path.exists(path3):
p.read(path3)
else:
return None
return p
config = nova_load_config_file()
client = nova_client.Client(
version = config.get('openstack', 'version'),
username = config.get('openstack', 'username'),
api_key = config.get('openstack', 'api_key'),
auth_url = config.get('openstack', 'auth_url'),
project_id = config.get('openstack', 'project_id')
)
if len(sys.argv) == 2 and (sys.argv[1] == '--list'):
groups = {}
# Cycle on servers
for f in client.servers.list():
# Define group (or set to empty string)
group = f.metadata['group'] if f.metadata.has_key('group') else 'undefined'
# Create group if not exist
if group not in groups:
groups[group] = []
# Append group to list
groups[group].append(f.accessIPv4)
# Return server list
print json.dumps(groups)
sys.exit(0)
#####################################################
# executed with a hostname as a parameter, return the
# variables for that host
elif len(sys.argv) == 3 and (sys.argv[1] == '--host'):
results = {}
for instance in client.servers.list():
if instance.accessIPv4 == sys.argv[2]:
for key in vars(instance):
# Extract value
value = getattr(instance, key)
# Generate sanitized key
key = 'os_' + re.sub("[^A-Za-z0-9\-]", "_", key).lower()
# Att value to instance result (exclude manager class)
#TODO: maybe use value.__class__ or similar inside of key_name
if key != 'os_manager':
results[key] = value
print json.dumps(results)
sys.exit(0)
else:
print "usage: --list ..OR.. --host <hostname>"
sys.exit(1)