# elb_target_group – Manage a target group for an Application or Network load balancer

New in version 2.4.

- Synopsis

- Requirements

- Parameters

- Notes

- Examples

- Return Values

- Status

## Synopsis

- Manage an AWS Elastic Load Balancer target group. See https://docs.aws.amazon.com/elasticloadbalancing/latest/application/load-balancer-target-groups.html or https://docs.aws.amazon.com/elasticloadbalancing/latest/network/load-balancer-target-groups.html for details.

## Requirements

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

- boto

- boto3

- python >= 2.6

## Parameters

Parameter | Choices/Defaults | Comments
--- | --- | ---
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.

deregistration_delay_timeout - |  | The amount time for Elastic Load Balancing to wait before changing the state of a deregistering target from draining to unused. The range is 0-3600 seconds.
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.
health_check_interval - |  | The approximate amount of time, in seconds, between health checks of an individual target.
health_check_path - |  | The ping path that is the destination on the targets for health checks. The path must be defined in order to set a health check.
health_check_port - | Default: "The port on which each target receives traffic from the load balancer." | The port the load balancer uses when performing health checks on targets. Can be set to 'traffic-port' to match target port.

health_check_protocol
-

Choices:
- http
- https
- tcp

The protocol the load balancer uses when performing health checks on targets.

health_check_timeout - |  | The amount of time, in seconds, during which no response from a target means a failed health check.
healthy_threshold_count - |  | The number of consecutive health checks successes required before considering an unhealthy target healthy.

modify_targets
boolean

Choices:
- no
- yes ←

Whether or not to alter existing targets in the group to match what is passed with the module

name - / required |  | The name of the target group.
port - |  | The port on which the targets receive traffic. This port is used unless you specify a port override when registering the target. Required if state is `present`.
profile string |  | Uses a boto profile. Only works with boto >= 2.24.0.

protocol
-

Choices:
- http
- https
- tcp

The protocol to use for routing traffic to the targets. Required when state is `present`.

purge_tags
boolean

Choices:
- no
- yes ←

If yes, existing tags will be purged from the resource to match exactly what is defined by tags parameter. If the tag parameter is not set then tags will not be modified.

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
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

state
- / required

Choices:
- present
- absent

Create or destroy the target group.

stickiness_enabled
boolean

Choices:
- no
- yes

Indicates whether sticky sessions are enabled.

stickiness_lb_cookie_duration - |  | The time period, in seconds, during which requests from a client should be routed to the same target. After this time period expires, the load balancer-generated cookie is considered stale. The range is 1 second to 1 week (604800 seconds).
stickiness_type - | Default: "lb_cookie" | The type of sticky sessions. The possible value is lb_cookie.
successful_response_codes - |  | The HTTP codes to use when checking for a successful response from a target. Accepts multiple values (for example, "200,202") or a range of values (for example, "200-299"). Requires the health_check_protocol parameter to be set.
tags - |  | A dictionary of one or more tags to assign to the target group.

target_type
-
added in 2.5

Choices:
- instance ←
- ip
- lambda

The type of target that you must specify when registering targets with this target group. The possible values are `instance` (targets are specified by instance ID), `ip` (targets are specified by IP address) or `lambda` (target is specified by ARN). Note that you can't specify targets for a target group using more than one type. Target type lambda only accept one target. When more than one target is specified, only the first one is used. All additional targets are ignored. If the target type is ip, specify IP addresses from the subnets of the virtual private cloud (VPC) for the target group, the RFC 1918 range (10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16), and the RFC 6598 range (100.64.0.0/10). You can't specify publicly routable IP addresses.

targets - |  | A list of targets to assign to the target group. This parameter defaults to an empty list. Unless you set the 'modify_targets' parameter then all existing targets will be removed from the group. The list should be an Id and a Port parameter. See the Examples for detail.
unhealthy_threshold_count - |  | The number of consecutive health check failures required before considering a target unhealthy.

validate_certs
boolean

Choices:
- no
- yes ←

When set to "no", SSL certificates will not be validated for boto versions >= 2.6.0.

vpc_id - |  | The identifier of the virtual private cloud (VPC). Required when state is `present`.

wait
boolean
added in 2.4

Choices:
- no ←
- yes

Whether or not to wait for the target group.

wait_timeout - added in 2.4 | Default: 200 | The time to wait for the target group.

## Notes

Note

- Once a target group has been created, only its health check can then be modified using subsequent calls

- 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 a target group with a default health check
    - elb_target_group:
        name: mytargetgroup
        protocol: http
        port: 80
        vpc_id: vpc-01234567
        state: present

    # Modify the target group with a custom health check
    - elb_target_group:
        name: mytargetgroup
        protocol: http
        port: 80
        vpc_id: vpc-01234567
        health_check_path: /
        successful_response_codes: "200,250-260"
        state: present

    # Delete a target group
    - elb_target_group:
        name: mytargetgroup
        state: absent

    # Create a target group with instance targets
    - elb_target_group:
        name: mytargetgroup
        protocol: http
        port: 81
        vpc_id: vpc-01234567
        health_check_path: /
        successful_response_codes: "200,250-260"
        targets:
          - Id: i-01234567
            Port: 80
          - Id: i-98765432
            Port: 80
        state: present
        wait_timeout: 200
        wait: True

    # Create a target group with IP address targets
    - elb_target_group:
        name: mytargetgroup
        protocol: http
        port: 81
        vpc_id: vpc-01234567
        health_check_path: /
        successful_response_codes: "200,250-260"
        target_type: ip
        targets:
          - Id: 10.0.0.10
            Port: 80
            AvailabilityZone: all
          - Id: 10.0.0.20
            Port: 80
        state: present
        wait_timeout: 200
        wait: True

    # Using lambda as targets require that the target group
    # itself is allow to invoke the lambda function.
    # therefore you need first to create an empty target group
    # to receive its arn, second, allow the target group
    # to invoke the lamba function and third, add the target
    # to the target group
    - name: first, create empty target group
      elb_target_group:
        name: my-lambda-targetgroup
        target_type: lambda
        state: present
        modify_targets: False
      register: out

    - name: second, allow invoke of the lambda
      lambda_policy:
        state: "{{ state | default('present') }}"
        function_name: my-lambda-function
        statement_id: someID
        action: lambda:InvokeFunction
        principal: elasticloadbalancing.amazonaws.com
        source_arn: "{{ out.target_group_arn }}"

    - name: third, add target
      elb_target_group:
        name: my-lambda-targetgroup
        target_type: lambda
        state: present
        targets:
            - Id: arn:aws:lambda:eu-central-1:123456789012:function:my-lambda-function

## Return Values

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

Key | Returned | Description
--- | --- | ---
deregistration_delay_timeout_seconds integer | when state present | The amount time for Elastic Load Balancing to wait before changing the state of a deregistering target from draining to unused. Sample: 300
health_check_interval_seconds integer | when state present | The approximate amount of time, in seconds, between health checks of an individual target. Sample: 30
health_check_path string | when state present | The destination for the health check request. Sample: /index.html
health_check_port string | when state present | The port to use to connect with the target. Sample: traffic-port
health_check_protocol string | when state present | The protocol to use to connect with the target. Sample: HTTP
health_check_timeout_seconds integer | when state present | The amount of time, in seconds, during which no response means a failed health check. Sample: 5
healthy_threshold_count integer | when state present | The number of consecutive health checks successes required before considering an unhealthy target healthy. Sample: 5
load_balancer_arns list | when state present | The Amazon Resource Names (ARN) of the load balancers that route traffic to this target group.
matcher dictionary | when state present | The HTTP codes to use when checking for a successful response from a target. Sample: {'http_code': '200'}
port integer | when state present | The port on which the targets are listening. Sample: 80
protocol string | when state present | The protocol to use for routing traffic to the targets. Sample: HTTP
stickiness_enabled boolean | when state present | Indicates whether sticky sessions are enabled. Sample: True
stickiness_lb_cookie_duration_seconds integer | when state present | The time period, in seconds, during which requests from a client should be routed to the same target. Sample: 86400
stickiness_type string | when state present | The type of sticky sessions. Sample: lb_cookie
tags dictionary | when state present | The tags attached to the target group. Sample: { 'Tag': 'Example' }
target_group_arn string | when state present | The Amazon Resource Name (ARN) of the target group. Sample: arn:aws:elasticloadbalancing:ap-southeast-2:01234567890:targetgroup/mytargetgroup/aabbccddee0044332211
target_group_name string | when state present | The name of the target group. Sample: mytargetgroup
unhealthy_threshold_count integer | when state present | The number of consecutive health check failures required before considering the target unhealthy. Sample: 2
vpc_id string | when state present | The ID of the VPC for the targets. Sample: vpc-0123456

## 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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