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614 lines
23 KiB
Python
614 lines
23 KiB
Python
#!/usr/bin/python
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#
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# This is a 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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# This Ansible library 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 this library. If not, see <http://www.gnu.org/licenses/>.
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ANSIBLE_METADATA = {'metadata_version': '1.1',
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'status': ['preview'],
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'supported_by': 'community'}
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DOCUMENTATION = '''
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---
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module: ec2_eni
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short_description: Create and optionally attach an Elastic Network Interface (ENI) to an instance
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description:
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- Create and optionally attach an Elastic Network Interface (ENI) to an instance. If an ENI ID or private_ip is
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provided, the existing ENI (if any) will be modified. The 'attached' parameter controls the attachment status
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of the network interface.
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version_added: "2.0"
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author: "Rob White (@wimnat)"
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options:
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eni_id:
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description:
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- The ID of the ENI (to modify); if null and state is present, a new eni will be created.
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instance_id:
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description:
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- Instance ID that you wish to attach ENI to. Since version 2.2, use the 'attached' parameter to attach or
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detach an ENI. Prior to 2.2, to detach an ENI from an instance, use 'None'.
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private_ip_address:
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description:
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- Private IP address.
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subnet_id:
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description:
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- ID of subnet in which to create the ENI.
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description:
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description:
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- Optional description of the ENI.
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security_groups:
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description:
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- List of security groups associated with the interface. Only used when state=present. Since version 2.2, you
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can specify security groups by ID or by name or a combination of both. Prior to 2.2, you can specify only by ID.
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state:
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description:
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- Create or delete ENI
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default: present
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choices: [ 'present', 'absent' ]
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device_index:
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description:
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- The index of the device for the network interface attachment on the instance.
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default: 0
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attached:
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description:
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- Specifies if network interface should be attached or detached from instance. If ommited, attachment status
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won't change
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default: 'yes'
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version_added: 2.2
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force_detach:
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description:
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- Force detachment of the interface. This applies either when explicitly detaching the interface by setting instance_id
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to None or when deleting an interface with state=absent.
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default: 'no'
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delete_on_termination:
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description:
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- Delete the interface when the instance it is attached to is terminated. You can only specify this flag when the
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interface is being modified, not on creation.
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required: false
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source_dest_check:
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description:
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- By default, interfaces perform source/destination checks. NAT instances however need this check to be disabled.
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You can only specify this flag when the interface is being modified, not on creation.
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required: false
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secondary_private_ip_addresses:
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description:
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- A list of IP addresses to assign as secondary IP addresses to the network interface.
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This option is mutually exclusive of secondary_private_ip_address_count
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required: false
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version_added: 2.2
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purge_secondary_private_ip_addresses:
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description:
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- To be used with I(secondary_private_ip_addresses) to determine whether or not to remove any secondary IP addresses other than those specified.
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Set secondary_private_ip_addresses to an empty list to purge all secondary addresses.
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default: no
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version_added: 2.5
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secondary_private_ip_address_count:
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description:
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- The number of secondary IP addresses to assign to the network interface. This option is mutually exclusive of secondary_private_ip_addresses
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required: false
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version_added: 2.2
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extends_documentation_fragment:
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- aws
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- ec2
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notes:
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- This module identifies and ENI based on either the eni_id, a combination of private_ip_address and subnet_id,
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or a combination of instance_id and device_id. Any of these options will let you specify a particular ENI.
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'''
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EXAMPLES = '''
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# Note: These examples do not set authentication details, see the AWS Guide for details.
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# Create an ENI. As no security group is defined, ENI will be created in default security group
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- ec2_eni:
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private_ip_address: 172.31.0.20
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subnet_id: subnet-xxxxxxxx
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state: present
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# Create an ENI and attach it to an instance
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- ec2_eni:
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instance_id: i-xxxxxxx
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device_index: 1
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private_ip_address: 172.31.0.20
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subnet_id: subnet-xxxxxxxx
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state: present
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# Create an ENI with two secondary addresses
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- ec2_eni:
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subnet_id: subnet-xxxxxxxx
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state: present
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secondary_private_ip_address_count: 2
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# Assign a secondary IP address to an existing ENI
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# This will purge any existing IPs
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- ec2_eni:
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subnet_id: subnet-xxxxxxxx
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eni_id: eni-yyyyyyyy
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state: present
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secondary_private_ip_addresses:
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- 172.16.1.1
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# Remove any secondary IP addresses from an existing ENI
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- ec2_eni:
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subnet_id: subnet-xxxxxxxx
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eni_id: eni-yyyyyyyy
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state: present
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secondary_private_ip_addresses:
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-
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# Destroy an ENI, detaching it from any instance if necessary
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- ec2_eni:
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eni_id: eni-xxxxxxx
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force_detach: yes
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state: absent
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# Update an ENI
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- ec2_eni:
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eni_id: eni-xxxxxxx
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description: "My new description"
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state: present
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# Update an ENI identifying it by private_ip_address and subnet_id
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- ec2_eni:
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subnet_id: subnet-xxxxxxx
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private_ip_address: 172.16.1.1
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description: "My new description"
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# Detach an ENI from an instance
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- ec2_eni:
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eni_id: eni-xxxxxxx
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instance_id: None
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state: present
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### Delete an interface on termination
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# First create the interface
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- ec2_eni:
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instance_id: i-xxxxxxx
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device_index: 1
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private_ip_address: 172.31.0.20
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subnet_id: subnet-xxxxxxxx
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state: present
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register: eni
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# Modify the interface to enable the delete_on_terminaton flag
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- ec2_eni:
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eni_id: "{{ eni.interface.id }}"
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delete_on_termination: true
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'''
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RETURN = '''
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interface:
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description: Network interface attributes
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returned: when state != absent
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type: complex
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contains:
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description:
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description: interface description
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type: string
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sample: Firewall network interface
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groups:
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description: list of security groups
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type: list of dictionaries
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sample: [ { "sg-f8a8a9da": "default" } ]
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id:
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description: network interface id
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type: string
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sample: "eni-1d889198"
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mac_address:
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description: interface's physical address
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type: string
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sample: "00:00:5E:00:53:23"
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owner_id:
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description: aws account id
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type: string
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sample: 812381371
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private_ip_address:
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description: primary ip address of this interface
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type: string
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sample: 10.20.30.40
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private_ip_addresses:
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description: list of all private ip addresses associated to this interface
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type: list of dictionaries
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sample: [ { "primary_address": true, "private_ip_address": "10.20.30.40" } ]
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source_dest_check:
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description: value of source/dest check flag
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type: boolean
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sample: True
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status:
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description: network interface status
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type: string
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sample: "pending"
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subnet_id:
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description: which vpc subnet the interface is bound
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type: string
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sample: subnet-b0a0393c
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vpc_id:
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description: which vpc this network interface is bound
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type: string
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sample: vpc-9a9a9da
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'''
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import time
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import re
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try:
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import boto.ec2
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import boto.vpc
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from boto.exception import BotoServerError
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HAS_BOTO = True
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except ImportError:
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HAS_BOTO = False
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from ansible.module_utils.basic import AnsibleModule
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from ansible.module_utils.ec2 import (AnsibleAWSError, connect_to_aws,
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ec2_argument_spec, get_aws_connection_info,
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get_ec2_security_group_ids_from_names)
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def get_eni_info(interface):
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# Private addresses
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private_addresses = []
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for ip in interface.private_ip_addresses:
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private_addresses.append({'private_ip_address': ip.private_ip_address, 'primary_address': ip.primary})
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interface_info = {'id': interface.id,
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'subnet_id': interface.subnet_id,
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'vpc_id': interface.vpc_id,
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'description': interface.description,
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'owner_id': interface.owner_id,
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'status': interface.status,
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'mac_address': interface.mac_address,
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'private_ip_address': interface.private_ip_address,
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'source_dest_check': interface.source_dest_check,
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'groups': dict((group.id, group.name) for group in interface.groups),
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'private_ip_addresses': private_addresses
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}
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if interface.attachment is not None:
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interface_info['attachment'] = {'attachment_id': interface.attachment.id,
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'instance_id': interface.attachment.instance_id,
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'device_index': interface.attachment.device_index,
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'status': interface.attachment.status,
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'attach_time': interface.attachment.attach_time,
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'delete_on_termination': interface.attachment.delete_on_termination,
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}
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return interface_info
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def wait_for_eni(eni, status):
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while True:
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time.sleep(3)
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eni.update()
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# If the status is detached we just need attachment to disappear
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if eni.attachment is None:
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if status == "detached":
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break
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else:
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if status == "attached" and eni.attachment.status == "attached":
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break
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def create_eni(connection, vpc_id, module):
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instance_id = module.params.get("instance_id")
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attached = module.params.get("attached")
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if instance_id == 'None':
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instance_id = None
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device_index = module.params.get("device_index")
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subnet_id = module.params.get('subnet_id')
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private_ip_address = module.params.get('private_ip_address')
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description = module.params.get('description')
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security_groups = get_ec2_security_group_ids_from_names(module.params.get('security_groups'), connection, vpc_id=vpc_id, boto3=False)
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secondary_private_ip_addresses = module.params.get("secondary_private_ip_addresses")
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secondary_private_ip_address_count = module.params.get("secondary_private_ip_address_count")
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changed = False
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try:
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eni = connection.create_network_interface(subnet_id, private_ip_address, description, security_groups)
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if attached and instance_id is not None:
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try:
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eni.attach(instance_id, device_index)
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except BotoServerError:
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eni.delete()
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raise
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# Wait to allow creation / attachment to finish
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wait_for_eni(eni, "attached")
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eni.update()
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if secondary_private_ip_address_count is not None:
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try:
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connection.assign_private_ip_addresses(network_interface_id=eni.id, secondary_private_ip_address_count=secondary_private_ip_address_count)
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except BotoServerError:
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eni.delete()
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raise
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if secondary_private_ip_addresses is not None:
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try:
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connection.assign_private_ip_addresses(network_interface_id=eni.id, private_ip_addresses=secondary_private_ip_addresses)
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except BotoServerError:
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eni.delete()
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raise
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changed = True
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except BotoServerError as e:
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module.fail_json(msg=e.message)
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module.exit_json(changed=changed, interface=get_eni_info(eni))
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def modify_eni(connection, vpc_id, module, eni):
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instance_id = module.params.get("instance_id")
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attached = module.params.get("attached")
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do_detach = module.params.get('state') == 'detached'
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device_index = module.params.get("device_index")
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description = module.params.get('description')
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security_groups = module.params.get('security_groups')
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force_detach = module.params.get("force_detach")
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source_dest_check = module.params.get("source_dest_check")
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delete_on_termination = module.params.get("delete_on_termination")
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secondary_private_ip_addresses = module.params.get("secondary_private_ip_addresses")
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purge_secondary_private_ip_addresses = module.params.get("purge_secondary_private_ip_addresses")
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secondary_private_ip_address_count = module.params.get("secondary_private_ip_address_count")
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changed = False
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try:
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if description is not None:
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if eni.description != description:
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connection.modify_network_interface_attribute(eni.id, "description", description)
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changed = True
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if len(security_groups) > 0:
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groups = get_ec2_security_group_ids_from_names(security_groups, connection, vpc_id=vpc_id, boto3=False)
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if sorted(get_sec_group_list(eni.groups)) != sorted(groups):
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connection.modify_network_interface_attribute(eni.id, "groupSet", groups)
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changed = True
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if source_dest_check is not None:
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if eni.source_dest_check != source_dest_check:
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connection.modify_network_interface_attribute(eni.id, "sourceDestCheck", source_dest_check)
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changed = True
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if delete_on_termination is not None and eni.attachment is not None:
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if eni.attachment.delete_on_termination is not delete_on_termination:
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connection.modify_network_interface_attribute(eni.id, "deleteOnTermination", delete_on_termination, eni.attachment.id)
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changed = True
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current_secondary_addresses = [i.private_ip_address for i in eni.private_ip_addresses if not i.primary]
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if secondary_private_ip_addresses is not None:
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secondary_addresses_to_remove = list(set(current_secondary_addresses) - set(secondary_private_ip_addresses))
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if secondary_addresses_to_remove and purge_secondary_private_ip_addresses:
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connection.unassign_private_ip_addresses(network_interface_id=eni.id,
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private_ip_addresses=list(set(current_secondary_addresses) -
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set(secondary_private_ip_addresses)),
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dry_run=False)
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changed = True
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secondary_addresses_to_add = list(set(secondary_private_ip_addresses) - set(current_secondary_addresses))
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if secondary_addresses_to_add:
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connection.assign_private_ip_addresses(network_interface_id=eni.id,
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private_ip_addresses=secondary_addresses_to_add,
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secondary_private_ip_address_count=None,
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allow_reassignment=False, dry_run=False)
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changed = True
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if secondary_private_ip_address_count is not None:
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current_secondary_address_count = len(current_secondary_addresses)
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if secondary_private_ip_address_count > current_secondary_address_count:
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connection.assign_private_ip_addresses(network_interface_id=eni.id,
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private_ip_addresses=None,
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secondary_private_ip_address_count=(secondary_private_ip_address_count -
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current_secondary_address_count),
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allow_reassignment=False, dry_run=False)
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changed = True
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elif secondary_private_ip_address_count < current_secondary_address_count:
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# How many of these addresses do we want to remove
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secondary_addresses_to_remove_count = current_secondary_address_count - secondary_private_ip_address_count
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connection.unassign_private_ip_addresses(network_interface_id=eni.id,
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private_ip_addresses=current_secondary_addresses[:secondary_addresses_to_remove_count],
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dry_run=False)
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if attached is True:
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if eni.attachment and eni.attachment.instance_id != instance_id:
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detach_eni(eni, module)
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eni.attach(instance_id, device_index)
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wait_for_eni(eni, "attached")
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changed = True
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if eni.attachment is None:
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eni.attach(instance_id, device_index)
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wait_for_eni(eni, "attached")
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changed = True
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elif attached is False:
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detach_eni(eni, module)
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except BotoServerError as e:
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module.fail_json(msg=e.message)
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eni.update()
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module.exit_json(changed=changed, interface=get_eni_info(eni))
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def delete_eni(connection, module):
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eni_id = module.params.get("eni_id")
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force_detach = module.params.get("force_detach")
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try:
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eni_result_set = connection.get_all_network_interfaces(eni_id)
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eni = eni_result_set[0]
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if force_detach is True:
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if eni.attachment is not None:
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eni.detach(force_detach)
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# Wait to allow detachment to finish
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wait_for_eni(eni, "detached")
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eni.update()
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eni.delete()
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changed = True
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else:
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eni.delete()
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changed = True
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module.exit_json(changed=changed)
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except BotoServerError as e:
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regex = re.compile('The networkInterface ID \'.*\' does not exist')
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if regex.search(e.message) is not None:
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module.exit_json(changed=False)
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else:
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module.fail_json(msg=e.message)
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def detach_eni(eni, module):
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attached = module.params.get("attached")
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force_detach = module.params.get("force_detach")
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if eni.attachment is not None:
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eni.detach(force_detach)
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wait_for_eni(eni, "detached")
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if attached:
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return
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eni.update()
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module.exit_json(changed=True, interface=get_eni_info(eni))
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else:
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module.exit_json(changed=False, interface=get_eni_info(eni))
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def uniquely_find_eni(connection, module):
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eni_id = module.params.get("eni_id")
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private_ip_address = module.params.get('private_ip_address')
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|
subnet_id = module.params.get('subnet_id')
|
|
instance_id = module.params.get('instance_id')
|
|
device_index = module.params.get('device_index')
|
|
attached = module.params.get('attached')
|
|
|
|
try:
|
|
filters = {}
|
|
|
|
# proceed only if we're univocally specifying an ENI
|
|
if eni_id is None and private_ip_address is None and (instance_id is None and device_index is None):
|
|
return None
|
|
|
|
if private_ip_address and subnet_id:
|
|
filters['private-ip-address'] = private_ip_address
|
|
filters['subnet-id'] = subnet_id
|
|
|
|
if not attached and instance_id and device_index:
|
|
filters['attachment.instance-id'] = instance_id
|
|
filters['attachment.device-index'] = device_index
|
|
|
|
if eni_id is None and len(filters) == 0:
|
|
return None
|
|
|
|
eni_result = connection.get_all_network_interfaces(eni_id, filters=filters)
|
|
if len(eni_result) == 1:
|
|
return eni_result[0]
|
|
else:
|
|
return None
|
|
|
|
except BotoServerError as e:
|
|
module.fail_json(msg=e.message)
|
|
|
|
return None
|
|
|
|
|
|
def get_sec_group_list(groups):
|
|
|
|
# Build list of remote security groups
|
|
remote_security_groups = []
|
|
for group in groups:
|
|
remote_security_groups.append(group.id.encode())
|
|
|
|
return remote_security_groups
|
|
|
|
|
|
def _get_vpc_id(connection, module, subnet_id):
|
|
|
|
try:
|
|
return connection.get_all_subnets(subnet_ids=[subnet_id])[0].vpc_id
|
|
except BotoServerError as e:
|
|
module.fail_json(msg=e.message)
|
|
|
|
|
|
def main():
|
|
argument_spec = ec2_argument_spec()
|
|
argument_spec.update(
|
|
dict(
|
|
eni_id=dict(default=None, type='str'),
|
|
instance_id=dict(default=None, type='str'),
|
|
private_ip_address=dict(type='str'),
|
|
subnet_id=dict(type='str'),
|
|
description=dict(type='str'),
|
|
security_groups=dict(default=[], type='list'),
|
|
device_index=dict(default=0, type='int'),
|
|
state=dict(default='present', choices=['present', 'absent']),
|
|
force_detach=dict(default='no', type='bool'),
|
|
source_dest_check=dict(default=None, type='bool'),
|
|
delete_on_termination=dict(default=None, type='bool'),
|
|
secondary_private_ip_addresses=dict(default=None, type='list'),
|
|
purge_secondary_private_ip_addresses=dict(default=False, type='bool'),
|
|
secondary_private_ip_address_count=dict(default=None, type='int'),
|
|
attached=dict(default=None, type='bool')
|
|
)
|
|
)
|
|
|
|
module = AnsibleModule(argument_spec=argument_spec,
|
|
mutually_exclusive=[
|
|
['secondary_private_ip_addresses', 'secondary_private_ip_address_count']
|
|
],
|
|
required_if=([
|
|
('state', 'absent', ['eni_id']),
|
|
('attached', True, ['instance_id']),
|
|
('purge_secondary_private_ip_addresses', True, ['secondary_private_ip_addresses'])
|
|
])
|
|
)
|
|
|
|
if not HAS_BOTO:
|
|
module.fail_json(msg='boto required for this module')
|
|
|
|
region, ec2_url, aws_connect_params = get_aws_connection_info(module)
|
|
|
|
if region:
|
|
try:
|
|
connection = connect_to_aws(boto.ec2, region, **aws_connect_params)
|
|
vpc_connection = connect_to_aws(boto.vpc, region, **aws_connect_params)
|
|
except (boto.exception.NoAuthHandlerFound, AnsibleAWSError) as e:
|
|
module.fail_json(msg=str(e))
|
|
else:
|
|
module.fail_json(msg="region must be specified")
|
|
|
|
state = module.params.get("state")
|
|
|
|
if state == 'present':
|
|
eni = uniquely_find_eni(connection, module)
|
|
if eni is None:
|
|
subnet_id = module.params.get("subnet_id")
|
|
if subnet_id is None:
|
|
module.fail_json(msg="subnet_id is required when creating a new ENI")
|
|
|
|
vpc_id = _get_vpc_id(vpc_connection, module, subnet_id)
|
|
create_eni(connection, vpc_id, module)
|
|
else:
|
|
vpc_id = eni.vpc_id
|
|
modify_eni(connection, vpc_id, module, eni)
|
|
|
|
elif state == 'absent':
|
|
delete_eni(connection, module)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
main()
|