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ansible/cloud/nova_fip

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#!/usr/bin/python
# -*- coding: utf-8 -*-
# (c) 2013, John Dewey <john@dewey.ws>
#
# This module 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.
#
# This software 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 this software. If not, see <http://www.gnu.org/licenses/>.
try:
from novaclient import utils
from novaclient.v1_1 import client
from novaclient.v1_1 import servers
except ImportError:
print("failed=True msg='novaclient is required for this module to work'")
DOCUMENTATION = '''
---
module: nova_fip
version_added: "1.6"
short_description: Associate an OpenStack floating IP with a server.
description:
- Manage nova floating IPs using the python-novaclient library.
options:
login_username:
description:
- Login username to authenticate to keystone. If not set then the value of the OS_USERNAME environment variable is used.
required: false
default: None
login_password:
description:
- Password of login user. If not set then the value of the OS_PASSWORD environment variable is used.
required: false
default: None
login_tenant_name:
description:
- The tenant name of the login user. If not set then the value of the OS_TENANT_NAME environment variable is used.
required: false
default: None
auth_url:
description:
- The keystone url for authentication. If not set then the value of the OS_AUTH_URL environment variable is used.
required: false
default: None
region_name:
description:
- Name of the region.
required: false
default: None
server:
description:
- Name or ID of server.
required: false
default: None
floating_ip:
description:
- The public IP address to associate with the instance.
- If absent, allocate a new address
required: false
default: None
pool:
description:
- The pool the floating_ip belongs to.
required: false
default: external
state:
description:
- Indicate desired state of the resource.
choices: ['present', 'absent']
required: false
default: 'present'
requirements: ["novaclient"]
notes:
- This module will return C(floating_ip) on success, which will contain the
public IP address associated with the instance.
- There may be a delay between the time the floating IP is assigned and when
the cloud instance is reachable via the new address. Use wait_for and pause
to delay further playbook execution until the instance is reachable, if
necessary.
'''
EXAMPLES = '''
- name: associate a floating IP with a server
nova_fip: server={{ UUID or name }} ip={{ IP }}
- name: disassociate a floating IP from a server
nova_fip: server={{ UUID or name }} ip={{ IP }} state=absent
- name: allocate a new floating IP and associate it with a server
nova_fip: server={{ UUID or name }}
- name: allocate a new floating IP without associating it to anything
nova_fip:
register: fip
- name: deallocate a floating IP
nova_fip: ip={{ IP }} state=absent
- name: output the IP
debug: msg="Allocated IP is {{ fip.floating_ip }}"
'''
def _floating_ip_already_associated(server, floating_ip):
changed = False
for network, ip_list in server.networks.iteritems():
if floating_ip in ip_list:
changed = True
return changed
def _associate_floating_ip(nova, floating_ip, server):
s = _find_server(nova, server)
if not _floating_ip_already_associated(s, floating_ip):
s.add_floating_ip(floating_ip)
return True
def _disassociate_floating_ip(nova, floating_ip, server):
s = _find_server(nova, server)
if _floating_ip_already_associated(s, floating_ip):
s.remove_floating_ip(floating_ip)
return True
def _find_server(nova, server):
return utils.find_resource(nova.servers, server)
def _allocate_address(nova, pool):
address = None
floating_ips = nova.floating_ips.list()
for fip in floating_ips:
# allocated but not assigned
if fip.pool == pool and fip.instance_id is None:
address = fip
# return an available floating ip
if address:
return address
# allocate and return a floating ip
else:
return nova.floating_ips.create(pool=pool)
def _deallocate_address(nova, floating_ip):
changed = False
floating_ips = nova.floating_ips.list()
for fip in floating_ips:
if fip.ip == floating_ip:
nova.floating_ips.delete(fip.id)
changed = True
return changed
def main():
module = AnsibleModule(
argument_spec=dict(
server=dict(required=False),
floating_ip=dict(required=False, aliases=['ip']),
pool=dict(default='external'),
login_username=dict(),
login_password=dict(no_log=True),
login_tenant_name=dict(),
auth_url= dict(),
region_name=dict(default=None),
state = dict(default='present', choices=['present', 'absent']),
),
supports_check_mode=True,
)
login_username = module.params.get('login_username')
login_password = module.params.get('login_password')
login_tenant_name = module.params.get('login_tenant_name')
auth_url = module.params.get('auth_url')
# allow stackrc environment variables to be used if ansible vars aren't set
if not login_username and 'OS_USERNAME' in os.environ:
login_username = os.environ['OS_USERNAME']
if not login_password and 'OS_PASSWORD' in os.environ:
login_password = os.environ['OS_PASSWORD']
if not login_tenant_name and 'OS_TENANT_NAME' in os.environ:
login_tenant_name = os.environ['OS_TENANT_NAME']
if not auth_url and 'OS_AUTH_URL' in os.environ:
auth_url = os.environ['OS_AUTH_URL']
nova = client.Client(login_username,
login_password,
login_tenant_name,
auth_url,
service_type='compute')
try:
nova.authenticate()
except exceptions.Unauthorized as e:
module.fail_json(msg="Invalid OpenStack Nova credentials.: %s" % e.message)
except exceptions.AuthorizationFailure as e:
module.fail_json(msg="Unable to authorize user: %s" % e.message)
server = module.params.get('server')
floating_ip = module.params.get('floating_ip')
pool = module.params.get('pool')
state = module.params.get('state')
if state == 'present':
if floating_ip is None:
if server is None:
address = _allocate_address(nova, pool)
module.exit_json(changed=True, floating_ip=address.ip)
else:
address = _allocate_address(nova, pool)
changed = _associate_floating_ip(nova, address.ip, server)
module.exit_json(changed=True, floating_ip=address.ip)
else:
changed = _associate_floating_ip(nova, floating_ip, server)
module.exit_json(changed=changed)
else:
if server is None:
changed = _deallocate_address(nova, floating_ip)
module.exit_json(changed=changed)
else:
changed = _disassociate_floating_ip(nova, floating_ip, server)
module.exit_json(changed=changed)
# import module snippets
from ansible.module_utils.basic import *
main()