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# ec2_eni – Create and optionally attach an Elastic Network Interface (ENI) to an instance

- Synopsis

- Requirements

- Parameters

- Notes

- Examples

- Return Values

- Status

## Synopsis

- Create and optionally attach an Elastic Network Interface (ENI) to an instance. If an ENI ID or private_ip is provided, the existing ENI (if any) will be modified. The ‘attached’ parameter controls the attachment status of the network interface.

## Requirements

The below requirements are needed on the host that executes this module.

- python >= 2.6

- boto

## Parameters

Parameter | Choices/Defaults | Comments
--- | --- | ---
allow_reassignment boolean added in 2.7 | Choices: no ← yes | Indicates whether to allow an IP address that is already assigned to another network interface or instance to be reassigned to the specified network interface.
attached boolean | Choices: no yes | Specifies if network interface should be attached or detached from instance. If omitted, attachment status won't change
aws_access_key string |  | AWS access key. If not set then the value of the AWS_ACCESS_KEY_ID, AWS_ACCESS_KEY or EC2_ACCESS_KEY environment variable is used. aliases: ec2_access_key, access_key
aws_secret_key string |  | AWS secret key. If not set then the value of the AWS_SECRET_ACCESS_KEY, AWS_SECRET_KEY, or EC2_SECRET_KEY environment variable is used. aliases: ec2_secret_key, secret_key
debug_botocore_endpoint_logs boolean added in 2.8 | Choices: no ← yes | Use a botocore.endpoint logger to parse the unique (rather than total) "resource:action" API calls made during a task, outputing the set to the resource_actions key in the task results. Use the aws_resource_action callback to output to total list made during a playbook. The ANSIBLE_DEBUG_BOTOCORE_LOGS environment variable may also be used.
delete_on_termination boolean | Choices: no yes | Delete the interface when the instance it is attached to is terminated. You can only specify this flag when the interface is being modified, not on creation.
description - |  | Optional description of the ENI.
device_index - | Default: 0 | The index of the device for the network interface attachment on the instance.
ec2_url string |  | Url to use to connect to EC2 or your Eucalyptus cloud (by default the module will use EC2 endpoints). Ignored for modules where region is required. Must be specified for all other modules if region is not used. If not set then the value of the EC2_URL environment variable, if any, is used.
eni_id - |  | The ID of the ENI (to modify); if null and state is present, a new eni will be created.
force_detach boolean | Choices: no ← yes | Force detachment of the interface. This applies either when explicitly detaching the interface by setting instance_id to None or when deleting an interface with state=absent.
instance_id - |  | Instance ID that you wish to attach ENI to. Since version 2.2, use the 'attached' parameter to attach or detach an ENI. Prior to 2.2, to detach an ENI from an instance, use 'None'.
private_ip_address - |  | Private IP address.
profile string |  | Uses a boto profile. Only works with boto >= 2.24.0.
purge_secondary_private_ip_addresses boolean added in 2.5 | Choices: no ← yes | To be used with secondary_private_ip_addresses to determine whether or not to remove any secondary IP addresses other than those specified. Set secondary_private_ip_addresses to an empty list to purge all secondary addresses.
region string |  | The AWS region to use. If not specified then the value of the AWS_REGION or EC2_REGION environment variable, if any, is used. See http://docs.aws.amazon.com/general/latest/gr/rande.html#ec2_region aliases: aws_region, ec2_region
secondary_private_ip_address_count - |  | The number of secondary IP addresses to assign to the network interface. This option is mutually exclusive of secondary_private_ip_addresses
secondary_private_ip_addresses - |  | A list of IP addresses to assign as secondary IP addresses to the network interface. This option is mutually exclusive of secondary_private_ip_address_count
security_groups - |  | List of security groups associated with the interface. Only used when state=present. Since version 2.2, you can specify security groups by ID or by name or a combination of both. Prior to 2.2, you can specify only by ID.
security_token string |  | AWS STS security token. If not set then the value of the AWS_SECURITY_TOKEN or EC2_SECURITY_TOKEN environment variable is used. aliases: access_token
source_dest_check boolean | Choices: no yes | By default, interfaces perform source/destination checks. NAT instances however need this check to be disabled. You can only specify this flag when the interface is being modified, not on creation.
state - | Choices: present ← absent | Create or delete ENI
subnet_id - |  | ID of subnet in which to create the ENI.
validate_certs boolean | Choices: no yes ← | When set to "no", SSL certificates will not be validated for boto versions >= 2.6.0.

## Notes

Note

- This module identifies and ENI based on either the eni_id, a combination of private_ip_address and subnet_id, or a combination of instance_id and device_id. Any of these options will let you specify a particular ENI.

- If parameters are not set within the module, the following environment variables can be used in decreasing order of precedence `AWS_URL` or `EC2_URL`, `AWS_ACCESS_KEY_ID` or `AWS_ACCESS_KEY` or `EC2_ACCESS_KEY`, `AWS_SECRET_ACCESS_KEY` or `AWS_SECRET_KEY` or `EC2_SECRET_KEY`, `AWS_SECURITY_TOKEN` or `EC2_SECURITY_TOKEN`, `AWS_REGION` or `EC2_REGION`

- Ansible uses the boto configuration file (typically ~/.boto) if no credentials are provided. See https://boto.readthedocs.io/en/latest/boto_config_tut.html

- `AWS_REGION` or `EC2_REGION` can be typically be used to specify the AWS region, when required, but this can also be configured in the boto config file

## Examples

    # Note: These examples do not set authentication details, see the AWS Guide for details.

    # Create an ENI. As no security group is defined, ENI will be created in default security group
    - ec2_eni:
        private_ip_address: 172.31.0.20
        subnet_id: subnet-xxxxxxxx
        state: present

    # Create an ENI and attach it to an instance
    - ec2_eni:
        instance_id: i-xxxxxxx
        device_index: 1
        private_ip_address: 172.31.0.20
        subnet_id: subnet-xxxxxxxx
        state: present

    # Create an ENI with two secondary addresses
    - ec2_eni:
        subnet_id: subnet-xxxxxxxx
        state: present
        secondary_private_ip_address_count: 2

    # Assign a secondary IP address to an existing ENI
    # This will purge any existing IPs
    - ec2_eni:
        subnet_id: subnet-xxxxxxxx
        eni_id: eni-yyyyyyyy
        state: present
        secondary_private_ip_addresses:
          - 172.16.1.1

    # Remove any secondary IP addresses from an existing ENI
    - ec2_eni:
        subnet_id: subnet-xxxxxxxx
        eni_id: eni-yyyyyyyy
        state: present
        secondary_private_ip_address_count: 0

    # Destroy an ENI, detaching it from any instance if necessary
    - ec2_eni:
        eni_id: eni-xxxxxxx
        force_detach: yes
        state: absent

    # Update an ENI
    - ec2_eni:
        eni_id: eni-xxxxxxx
        description: "My new description"
        state: present

    # Update an ENI identifying it by private_ip_address and subnet_id
    - ec2_eni:
        subnet_id: subnet-xxxxxxx
        private_ip_address: 172.16.1.1
        description: "My new description"

    # Detach an ENI from an instance
    - ec2_eni:
        eni_id: eni-xxxxxxx
        instance_id: None
        state: present

    ### Delete an interface on termination
    # First create the interface
    - ec2_eni:
        instance_id: i-xxxxxxx
        device_index: 1
        private_ip_address: 172.31.0.20
        subnet_id: subnet-xxxxxxxx
        state: present
      register: eni

    # Modify the interface to enable the delete_on_terminaton flag
    - ec2_eni:
        eni_id: "{{ eni.interface.id }}"
        delete_on_termination: true

## Return Values

Common return values are documented here, the following are the fields unique to this module:

Key | Returned | Description
--- | --- | ---
interface complex | when state != absent | Network interface attributes
| description string |  | interface description Sample: Firewall network interface
| groups list of dictionaries |  | list of security groups Sample: [{'sg-f8a8a9da': 'default'}]
| id string |  | network interface id Sample: eni-1d889198
| mac_address string |  | interface's physical address Sample: 00:00:5E:00:53:23
| owner_id string |  | aws account id Sample: 812381371
| private_ip_address string |  | primary ip address of this interface Sample: 10.20.30.40
| private_ip_addresses list of dictionaries |  | list of all private ip addresses associated to this interface Sample: [{'primary_address': True, 'private_ip_address': '10.20.30.40'}]
| source_dest_check boolean |  | value of source/dest check flag Sample: True
| status string |  | network interface status Sample: pending
| subnet_id string |  | which vpc subnet the interface is bound Sample: subnet-b0a0393c
| vpc_id string |  | which vpc this network interface is bound Sample: vpc-9a9a9da

## Status

- This module is not guaranteed to have a backwards compatible interface. [preview]

- This module is maintained by the Ansible Community. [community]

### Authors

- Rob White (@wimnat)

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