ansible/plugins/inventory/nova.py

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2013-03-16 06:29:16 +01:00
#!/usr/bin/env python
# (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/>.
DOCUMENTATION = '''
---
inventory: nova
short_description: OpenStack external inventory script
description:
- Generates inventory that Ansible can understand by making API request to OpenStack endpoint using the novaclient library.
- |
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.
- All information are set on B(nova.ini) file
version_added: None
options:
version:
description:
- OpenStack version to use.
required: true
default: null
choices: [ "1.1", "2" ]
username:
description:
- Username used to authenticate in OpenStack.
required: true
default: null
api_key:
description:
- Password used to authenticate in OpenStack, can be the ApiKey on some authentication system.
required: true
default: null
auth_url:
description:
- Authentication URL required to generate token.
- To manage RackSpace use I(https://identity.api.rackspacecloud.com/v2.0/)
required: true
default: null
auth_system:
description:
- Authentication system used to login
- To manage RackSpace install B(rackspace-novaclient) and insert I(rackspace)
required: true
default: null
region_name:
description:
- Region name to use in request
- In RackSpace some value can be I(ORD) or I(DWF).
required: true
default: null
project_id:
description:
- Project ID to use in connection
- In RackSpace use OS_TENANT_NAME
required: false
default: null
endpoint_type:
description:
- The endpoint type for novaclient
- In RackSpace use 'publicUrl'
required: false
default: null
service_type:
description:
- The service type you are managing.
- In RackSpace use 'compute'
required: false
default: null
service_name:
description:
- The service name you are managing.
- In RackSpace use 'cloudServersOpenStack'
required: false
default: null
insicure:
description:
- To no check security
required: false
default: false
choices: [ "true", "false" ]
author: Marco Vito Moscaritolo
notes:
- 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 U(https://github.com/openstack/python-novaclient)
examples:
- description: List instances
code: nova.py --list
- description: Instance property
code: nova.py --instance INSTANCE_IP
'''
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'),
region_name = config.get('openstack', 'region_name'),
project_id = config.get('openstack', 'project_id'),
auth_system = config.get('openstack', 'auth_system')
)
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)