229 lines
7.8 KiB
Python
229 lines
7.8 KiB
Python
#!/usr/bin/python
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# This file is part of Ansible
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#
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# Ansible is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
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DOCUMENTATION = """
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---
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module: ec2_asg
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short_description: Create or delete AWS Autoscaling Groups
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description:
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- Can create or delete AWS Autoscaling Groups
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- Works with the ec2_lc module to manage Launch Configurations
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version_added: "1.6"
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author: Gareth Rushgrove
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options:
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state:
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description:
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- register or deregister the instance
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required: true
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choices: ['present', 'absent']
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name:
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description:
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- Unique name for group to be created or deleted
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required: true
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load_balancers:
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description:
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- List of ELB names to use for the group
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required: false
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availability_zones:
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description:
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- List of availability zone names in which to create the group. Defaults to all the availability zones in the region if vpc_zone_identifier is not set.
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required: false
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launch_config_name:
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description:
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- Name of the Launch configuration to use for the group. See the ec2_lc module for managing these.
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required: false
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min_size:
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description:
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- Minimum number of instances in group
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required: false
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max_size:
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description:
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- Maximum number of instances in group
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required: false
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desired_capacity:
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description:
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- Desired number of instances in group
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required: false
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region:
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description:
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- The AWS region to use. If not specified then the value of the EC2_REGION environment variable, if any, is used.
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required: false
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aliases: ['aws_region', 'ec2_region']
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vpc_zone_identifier:
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description:
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- List of VPC subnets to use
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required: false
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default: None
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extends_documentation_fragment: aws
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"""
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EXAMPLES = '''
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- ec2_asg:
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name: special
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load_balancers: 'lb1,lb2'
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availability_zones: 'eu-west-1a,eu-west-1b'
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launch_config_name: 'lc-1'
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min_size: 1
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max_size: 10
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desired_capacity: 5
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vpc_zone_identifier: 'subnet-abcd1234,subnet-1a2b3c4d'
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'''
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import sys
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import time
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from ansible.module_utils.basic import *
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from ansible.module_utils.ec2 import *
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try:
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import boto.ec2.autoscale
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from boto.ec2.autoscale import AutoScaleConnection, AutoScalingGroup
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from boto.exception import BotoServerError
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except ImportError:
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print "failed=True msg='boto required for this module'"
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sys.exit(1)
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def enforce_required_arguments(module):
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''' As many arguments are not required for autoscale group deletion
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they cannot be mandatory arguments for the module, so we enforce
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them here '''
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missing_args = []
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for arg in ('min_size', 'max_size', 'launch_config_name'):
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if module.params[arg] is None:
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missing_args.append(arg)
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if missing_args:
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module.fail_json(msg="Missing required arguments for autoscaling group create/update: %s" % ",".join(missing_args))
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def create_autoscaling_group(connection, module):
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enforce_required_arguments(module)
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group_name = module.params.get('name')
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load_balancers = module.params['load_balancers']
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availability_zones = module.params['availability_zones']
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launch_config_name = module.params.get('launch_config_name')
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min_size = module.params['min_size']
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max_size = module.params['max_size']
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desired_capacity = module.params.get('desired_capacity')
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vpc_zone_identifier = module.params.get('vpc_zone_identifier')
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launch_configs = connection.get_all_launch_configurations(names=[launch_config_name])
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as_groups = connection.get_all_groups(names=[group_name])
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if not vpc_zone_identifier and not availability_zones:
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region, ec2_url, aws_connect_params = get_aws_connection_info(module)
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try:
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ec2_connection = connect_to_aws(boto.ec2, region, **aws_connect_params)
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except boto.exception.NoAuthHandlerFound, e:
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module.fail_json(msg=str(e))
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availability_zones = module.params['availability_zones'] = [zone.name for zone in ec2_connection.get_all_zones()]
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if not as_groups:
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ag = AutoScalingGroup(
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group_name=group_name,
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load_balancers=load_balancers,
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availability_zones=availability_zones,
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launch_config=launch_configs[0],
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min_size=min_size,
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max_size=max_size,
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desired_capacity=desired_capacity,
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vpc_zone_identifier=vpc_zone_identifier,
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connection=connection)
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try:
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connection.create_auto_scaling_group(ag)
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module.exit_json(changed=True)
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except BotoServerError, e:
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module.fail_json(msg=str(e))
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else:
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as_group = as_groups[0]
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changed = False
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for attr in ('launch_config_name', 'max_size', 'min_size', 'desired_capacity',
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'vpc_zone_identifier', 'availability_zones'):
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if getattr(as_group, attr) != module.params.get(attr):
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changed = True
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setattr(as_group, attr, module.params.get(attr))
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# handle loadbalancers separately because None != []
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load_balancers = module.params.get('load_balancers') or []
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if as_group.load_balancers != load_balancers:
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changed = True
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as_group.load_balancers = module.params.get('load_balancers')
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try:
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if changed:
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as_group.update()
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module.exit_json(changed=changed)
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except BotoServerError, e:
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module.fail_json(msg=str(e))
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def delete_autoscaling_group(connection, module):
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group_name = module.params.get('name')
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groups = connection.get_all_groups(names=[group_name])
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if groups:
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group = groups[0]
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group.shutdown_instances()
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instances = True
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while instances:
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groups = connection.get_all_groups()
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for group in groups:
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if group.name == group_name:
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if not group.instances:
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instances = False
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time.sleep(10)
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group.delete()
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module.exit_json(changed=True)
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else:
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module.exit_json(changed=False)
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def main():
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argument_spec = ec2_argument_spec()
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argument_spec.update(
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dict(
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name=dict(required=True, type='str'),
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load_balancers=dict(type='list'),
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availability_zones=dict(type='list'),
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launch_config_name=dict(type='str'),
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min_size=dict(type='int'),
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max_size=dict(type='int'),
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desired_capacity=dict(type='int'),
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vpc_zone_identifier=dict(type='str'),
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state=dict(default='present', choices=['present', 'absent']),
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)
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)
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module = AnsibleModule(argument_spec=argument_spec)
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state = module.params.get('state')
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region, ec2_url, aws_connect_params = get_aws_connection_info(module)
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try:
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connection = connect_to_aws(boto.ec2.autoscale, region, **aws_connect_params)
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if not connection:
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module.fail_json(msg="failed to connect to AWS for the given region: %s" % str(region))
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except boto.exception.NoAuthHandlerFound, e:
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module.fail_json(msg=str(e))
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if state == 'present':
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create_autoscaling_group(connection, module)
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elif state == 'absent':
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delete_autoscaling_group(connection, module)
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main()
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