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ansible/cloud/nova_compute
Monty Taylor 4f96a372b7 Update existing nova instances with current ip 
During the state check, check IP address information. This gets us
two things. The most obvious is that for direct IP management, a
change to the config will reflect in the config of the instance. But
also, if we succeed in creating the instance but fail in adding an IP,
this should let us re-run and arrive in the state we were expecting.
2014-08-02 21:13:17 -07:00

590 lines
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Python
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#!/usr/bin/python
#coding: utf-8 -*-
# (c) 2013, Benno Joy <benno@ansible.com>
# (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/>.
import operator
import os
try:
from novaclient.v1_1 import client as nova_client
from novaclient.v1_1 import floating_ips
from novaclient import exceptions
from novaclient import utils
import time
except ImportError:
print("failed=True msg='novaclient is required for this module'")
DOCUMENTATION = '''
---
module: nova_compute
version_added: "1.2"
short_description: Create/Delete VMs from OpenStack
description:
- Create or Remove virtual machines from Openstack.
options:
login_username:
description:
- login username to authenticate to keystone
required: true
default: admin
login_password:
description:
- Password of login user
required: true
default: 'yes'
login_tenant_name:
description:
- The tenant name of the login user
required: true
default: 'yes'
auth_url:
description:
- The keystone url for authentication
required: false
default: 'http://127.0.0.1:35357/v2.0/'
region_name:
description:
- Name of the region
required: false
default: None
state:
description:
- Indicate desired state of the resource
choices: ['present', 'absent']
default: present
name:
description:
- Name that has to be given to the instance
required: true
default: None
image_id:
description:
- The id of the base image to boot. Mutually exclusive with image_name
required: true
default: None
image_name:
description:
- The name of the base image to boot. Mutually exclusive with image_id
required: true
default: None
version_added: "1.7"
image_filter:
description:
- Text to use to filter image names, for the case, such as HP, where there are multiple image names matching the common identifying portions. image_filter is a negative match filter - it is text that may not exist in the image name. Defaults to "(deprecated)"
version_added: "1.7"
flavor_id:
description:
- The id of the flavor in which the new VM has to be created. Mutually exclusive with flavor_ram
required: false
default: 1
flavor_ram:
description:
- The minimum amount of ram in MB that the flavor in which the new VM has to be created must have. Mutually exclusive with flavor_id
required: false
default: 1
version_added: "1.7"
flavor_filter:
description:
- Text to use to filter flavor names, for the case, such as Rackspace, where there are multiple flavors that have the same ram count. flavor_filter is a positive match filter - it must exist in the flavor name.
version_added: "1.7"
key_name:
description:
- The key pair name to be used when creating a VM
required: false
default: None
security_groups:
description:
- The name of the security group to which the VM should be added
required: false
default: None
nics:
description:
- A list of network id's to which the VM's interface should be attached
required: false
default: None
auto_floating_ip:
description:
- Should a floating ip be auto created and assigned
required: false
default: 'yes'
version_added: "1.7"
floating_ips:
decription:
- list of valid floating IPs that pre-exist to assign to this node
required: false
default: None
version_added: "1.7"
floating_ip_pools:
description:
- list of floating IP pools from which to choose a floating IP
required: false
default: None
version_added: "1.7"
availability_zone:
description:
- Name of the availability zone
required: false
default: None
version_added: "1.7"
meta:
description:
- A list of key value pairs that should be provided as a metadata to the new VM
required: false
default: None
wait:
description:
- If the module should wait for the VM to be created.
required: false
default: 'yes'
wait_for:
description:
- The amount of time the module should wait for the VM to get into active state
required: false
default: 180
user_data:
description:
- Opaque blob of data which is made available to the instance
required: false
default: None
version_added: "1.6"
requirements: ["novaclient"]
'''
EXAMPLES = '''
# Creates a new VM and attaches to a network and passes metadata to the instance
- nova_compute:
state: present
login_username: admin
login_password: admin
login_tenant_name: admin
name: vm1
image_id: 4f905f38-e52a-43d2-b6ec-754a13ffb529
key_name: ansible_key
wait_for: 200
flavor_id: 4
nics:
- net-id: 34605f38-e52a-25d2-b6ec-754a13ffb723
meta:
hostname: test1
group: uge_master
# Creates a new VM in HP Cloud AE1 region availability zone az2 and automatically assigns a floating IP
- name: launch a nova instance
hosts: localhost
tasks:
- name: launch an instance
nova_compute:
state: present
login_username: username
login_password: Equality7-2521
login_tenant_name: username-project1
name: vm1
auth_url: https://region-b.geo-1.identity.hpcloudsvc.com:35357/v2.0/
region_name: region-b.geo-1
availability_zone: az2
image_id: 9302692b-b787-4b52-a3a6-daebb79cb498
key_name: test
wait_for: 200
flavor_id: 101
security_groups: default
auto_floating_ip: yes
# Creates a new VM in HP Cloud AE1 region availability zone az2 and assigns a pre-known floating IP
- name: launch a nova instance
hosts: localhost
tasks:
- name: launch an instance
nova_compute:
state: present
login_username: username
login_password: Equality7-2521
login_tenant_name: username-project1
name: vm1
auth_url: https://region-b.geo-1.identity.hpcloudsvc.com:35357/v2.0/
region_name: region-b.geo-1
availability_zone: az2
image_id: 9302692b-b787-4b52-a3a6-daebb79cb498
key_name: test
wait_for: 200
flavor_id: 101
floating-ips:
- 12.34.56.79
# Creates a new VM with 4G of RAM on Ubuntu Trusty, ignoring deprecated images
- name: launch a nova instance
hosts: localhost
tasks:
- name: launch an instance
nova_compute:
name: vm1
state: present
login_username: username
login_password: Equality7-2521
login_tenant_name: username-project1
auth_url: https://region-b.geo-1.identity.hpcloudsvc.com:35357/v2.0/
region_name: region-b.geo-1
image_name: Ubuntu Server 14.04
image_filter: deprecated
flavor_ram: 4096
# Creates a new VM with 4G of RAM on Ubuntu Trusty on a Rackspace Performance node in DFW
- name: launch a nova instance
hosts: localhost
tasks:
- name: launch an instance
nova_compute:
name: vm1
state: present
login_username: username
login_password: Equality7-2521
login_tenant_name: username-project1
auth_url: https://identity.api.rackspacecloud.com/v2.0/
region_name: DFW
image_name: Ubuntu 14.04 LTS (Trusty Tahr) (PVHVM)
flavor_ram: 4096
flavor_filter: Performance
'''
def _delete_server(module, nova):
name = None
server_list = None
try:
server_list = nova.servers.list(True, {'name': module.params['name']})
if server_list:
server = [x for x in server_list if x.name == module.params['name']]
nova.servers.delete(server.pop())
except Exception, e:
module.fail_json( msg = "Error in deleting vm: %s" % e.message)
if module.params['wait'] == 'no':
module.exit_json(changed = True, result = "deleted")
expire = time.time() + int(module.params['wait_for'])
while time.time() < expire:
name = nova.servers.list(True, {'name': module.params['name']})
if not name:
module.exit_json(changed = True, result = "deleted")
time.sleep(5)
module.fail_json(msg = "Timed out waiting for server to get deleted, please check manually")
def _add_floating_ip_from_pool(module, nova, server):
# instantiate FloatingIPManager object
floating_ip_obj = floating_ips.FloatingIPManager(nova)
# empty dict and list
usable_floating_ips = {}
pools = []
# user specified
pools = module.params['floating_ip_pools']
# get the list of all floating IPs. Mileage may
# vary according to Nova Compute configuration
# per cloud provider
all_floating_ips = floating_ip_obj.list()
# iterate through all pools of IP address. Empty
# string means all and is the default value
for pool in pools:
# temporary list per pool
pool_ips = []
# loop through all floating IPs
for f_ip in all_floating_ips:
# if not reserved and the correct pool, add
if f_ip.instance_id is None and (f_ip.pool == pool):
pool_ips.append(f_ip.ip)
# only need one
break
# if the list is empty, add for this pool
if not pool_ips:
try:
new_ip = nova.floating_ips.create(pool)
except Exception, e:
module.fail_json(msg = "Unable to create floating ip")
pool_ips.append(new_ip.ip)
# Add to the main list
usable_floating_ips[pool] = pool_ips
# finally, add ip(s) to instance for each pool
for pool in usable_floating_ips:
for ip in usable_floating_ips[pool]:
try:
server.add_floating_ip(ip)
# We only need to assign one ip - but there is an inherent
# race condition and some other cloud operation may have
# stolen an available floating ip
break
except Exception, e:
module.fail_json(msg = "Error attaching IP %s to instance %s: %s " % (ip, server.id, e.message))
def _add_floating_ip_list(module, server, ips):
# add ip(s) to instance
for ip in ips:
try:
server.add_floating_ip(ip)
except Exception, e:
module.fail_json(msg = "Error attaching IP %s to instance %s: %s " % (ip, server.id, e.message))
def _add_auto_floating_ip(module, nova, server):
try:
new_ip = nova.floating_ips.create()
except Exception as e:
module.fail_json(msg = "Unable to create floating ip: %s" % (e.message))
try:
server.add_floating_ip(new_ip)
except Exception as e:
# Clean up - we auto-created this ip, and it's not attached
# to the server, so the cloud will not know what to do with it
server.floating_ips.delete(new_ip)
module.fail_json(msg = "Error attaching IP %s to instance %s: %s " % (ip, server.id, e.message))
def _add_floating_ip(module, nova, server):
if module.params['floating_ip_pools']:
_add_floating_ip_from_pool(module, nova, server)
elif module.params['floating_ips']:
_add_floating_ip_list(module, server, module.params['floating_ips'])
elif module.params['auto_floating_ip']:
_add_auto_floating_ip(module, nova, server)
else:
return server
# this may look redundant, but if there is now a
# floating IP, then it needs to be obtained from
# a recent server object if the above code path exec'd
try:
server = nova.servers.get(server.id)
except Exception, e:
module.fail_json(msg = "Error in getting info from instance: %s " % e.message)
return server
def _get_ips(addresses, ext_tag, key_name=None):
ret = []
for (k, v) in addresses.iteritems():
if key_name and k == key_name:
ret.extend([addrs['addr'] for addrs in v])
else:
for interface_spec in v:
if 'OS-EXT-IPS:type' in interface_spec and interface_spec['OS-EXT-IPS:type'] == ext_tag:
ret.append(interface_spec['addr'])
return ret
def _get_image_id(module, nova):
if module.params['image_name']:
for image in nova.images.list():
if (module.params['image_name'] in img.name and (
not module.params['image_filter']
or module.params['image_filter'] not in img.name)):
return image.id
module.fail_json(msg = "Error finding image id from name(%s)" % module.params['image_name'])
return module.params['image_id']
def _get_flavor_id(module, nova):
if module.params['flavor_ram']:
for flavor in sorted(nova.flavors.list(), key=operator.attrgetter('ram')):
if (flavor.ram >= module.params['flavor_ram'] and
(not module.params['flavor_filter'] or module.params['flavor_filter'] in flavor.name)):
return flavor.id
module.fail_json(msg = "Error finding flavor with %sMB of RAM" % module.params['flavor_ram'])
return module.params['flavor_id']
def _create_server(module, nova):
image_id = _get_image_id(module, nova)
flavor_id = _get_flavor_id(module, nova)
bootargs = [module.params['name'], image_id, flavor_id]
bootkwargs = {
'nics' : module.params['nics'],
'meta' : module.params['meta'],
'security_groups': module.params['security_groups'].split(','),
#userdata is unhyphenated in novaclient, but hyphenated here for consistency with the ec2 module:
'userdata': module.params['user_data'],
}
for optional_param in ('region_name', 'key_name', 'availability_zone'):
if module.params[optional_param]:
bootkwargs[optional_param] = module.params[optional_param]
try:
server = nova.servers.create(*bootargs, **bootkwargs)
server = nova.servers.get(server.id)
except Exception, e:
module.fail_json( msg = "Error in creating instance: %s " % e.message)
if module.params['wait'] == 'yes':
expire = time.time() + int(module.params['wait_for'])
while time.time() < expire:
try:
server = nova.servers.get(server.id)
except Exception, e:
module.fail_json( msg = "Error in getting info from instance: %s" % e.message)
if server.status == 'ACTIVE':
server = _add_floating_ip(module, nova, server)
private = _get_ips(getattr(server, 'addresses'), 'fixed', 'private')
public = _get_ips(getattr(server, 'addresses'), 'floating', 'public')
# now exit with info
module.exit_json(changed = True, id = server.id, private_ip=''.join(private), public_ip=''.join(public), status = server.status, info = server._info)
if server.status == 'ERROR':
module.fail_json(msg = "Error in creating the server, please check logs")
time.sleep(2)
module.fail_json(msg = "Timeout waiting for the server to come up.. Please check manually")
if server.status == 'ERROR':
module.fail_json(msg = "Error in creating the server.. Please check manually")
private = _get_ips(getattr(server, 'addresses'), 'fixed', 'private')
public = _get_ips(getattr(server, 'addresses'), 'floating', 'public')
module.exit_json(changed = True, id = info['id'], private_ip=''.join(private), public_ip=''.join(public), status = server.status, info = server._info)
def _delete_floating_ip_list(module, nova, server, extra_ips):
for ip in extra_ips:
nova.servers.remove_floating_ip(server=server.id, address=ip)
def _check_floating_ips(module, nova, server):
changed = False
if module.params['floating_ip_pools'] or module.params['floating_ips'] or module.params['auto_floating_ip']:
ips = _get_ips(server.addresses, 'floating')
if not ips:
# If we're configured to have a floating but we don't have one,
# let's add one
server = _add_floating_ip(module, nova, server)
changed = True
elif module.params['floating_ips']:
# we were configured to have specific ips, let's make sure we have
# those
missing_ips = []
for ip in module.params['floating_ips']:
if ip not in ips:
missing_ips.append(ip)
if missing_ips:
server = _add_floating_ip_list(module, server, missing_ips)
changed = True
extra_ips = []
for ip in ips:
if ip not in module.params['floating_ips']:
extra_ips.append(ip)
if extra_ips:
_delete_floating_ip_list(module, server, extra_ips)
changed = True
return (changed, server)
def _get_server_state(module, nova):
server = None
try:
servers = nova.servers.list(True, {'name': module.params['name']})
if servers:
# the {'name': module.params['name']} will also return servers
# with names that partially match the server name, so we have to
# strictly filter here
servers = [x for x in servers if x.name == module.params['name']]
if servers:
server = servers[0]
except Exception, e:
module.fail_json(msg = "Error in getting the server list: %s" % e.message)
if server and module.params['state'] == 'present':
if server.status != 'ACTIVE':
module.fail_json( msg="The VM is available but not Active. state:" + server.status)
(ip_changed, server) = _check_floating_ips(module, nova, server)
private = _get_ips(getattr(server, 'addresses'), 'fixed', 'private')
public = _get_ips(getattr(server, 'addresses'), 'floating', 'public')
module.exit_json(changed = ip_changed, id = server.id, public_ip = ''.join(public), private_ip = ''.join(private), info = server._info)
if server and module.params['state'] == 'absent':
return True
if module.params['state'] == 'absent':
module.exit_json(changed = False, result = "not present")
return True
def main():
argument_spec = openstack_argument_spec()
argument_spec.update(dict(
name = dict(required=True),
image_id = dict(default=None),
image_name = dict(default=None),
image_filter = dict(default='(deprecated)'),
flavor_id = dict(default=1),
flavor_ram = dict(default=None, type='int'),
flavor_filter = dict(default=None),
key_name = dict(default=None),
security_groups = dict(default='default'),
nics = dict(default=None),
meta = dict(default=None),
wait = dict(default='yes', choices=['yes', 'no']),
wait_for = dict(default=180),
state = dict(default='present', choices=['absent', 'present']),
user_data = dict(default=None),
auto_floating_ip = dict(default=False, type='bool'),
floating_ips = dict(default=None),
floating_ip_pools = dict(default=None),
))
module = AnsibleModule(
argument_spec=argument_spec,
mutually_exclusive=[
['auto_floating_ip','floating_ips'],
['auto_floating_ip','floating_ip_pools'],
['floating_ips','floating_ip_pools'],
['image_id','image_name'],
['flavor_id','flavor_ram'],
],
)
nova = nova_client.Client(module.params['login_username'],
module.params['login_password'],
module.params['login_tenant_name'],
module.params['auth_url'],
region_name=module.params['region_name'],
service_type='compute')
try:
nova.authenticate()
except exceptions.Unauthorized, e:
module.fail_json(msg = "Invalid OpenStack Nova credentials.: %s" % e.message)
except exceptions.AuthorizationFailure, e:
module.fail_json(msg = "Unable to authorize user: %s" % e.message)
if module.params['state'] == 'present':
if not module.params['image_id'] and not module.params['image_name']:
module.fail_json( msg = "Parameter 'image_id' or `image_name` is required if state == 'present'")
else:
_get_server_state(module, nova)
_create_server(module, nova)
if module.params['state'] == 'absent':
_get_server_state(module, nova)
_delete_server(module, nova)
# this is magic, see lib/ansible/module_common.py
from ansible.module_utils.basic import *
from ansible.module_utils.openstack import *
main()
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