elb_target_facts – Gathers which target groups a target is associated with

From Get docs
Ansible/docs/2.8/modules/elb target facts module


elb_target_facts – Gathers which target groups a target is associated with

New in version 2.7.


Synopsis

  • This module will search through every target group in a region to find which ones have registered a given instance ID or IP.

Requirements

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

  • boto
  • boto3
  • botocore
  • 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

  • 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.

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.

get_unused_target_groups

boolean

  • no
  • yes

Whether or not to get target groups not used by any load balancers.

instance_id

string / required

What instance ID to get facts for.

profile

string

Uses a boto profile. Only works with boto >= 2.24.0.

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

validate_certs

boolean

  • no
  • yes

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



Notes

Note

  • 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

# practical use case - dynamically deregistering and reregistering nodes

  - name: Get EC2 Metadata
    action: ec2_metadata_facts

  - name: Get initial list of target groups
    delegate_to: localhost
    elb_target_facts:
      instance_id: "{{ ansible_ec2_instance_id }}"
      region: "{{ ansible_ec2_placement_region }}"
    register: target_facts

  - name: save fact for later
    set_fact:
      original_tgs: "{{ target_facts.instance_target_groups }}"

  - name: Deregister instance from all target groups
    delegate_to: localhost
    elb_target:
        target_group_arn: "{{ item.0.target_group_arn }}"
        target_port: "{{ item.1.target_port }}"
        target_az: "{{ item.1.target_az }}"
        target_id: "{{ item.1.target_id }}"
        state: absent
        target_status: "draining"
        region: "{{ ansible_ec2_placement_region }}"
    with_subelements:
      - "{{ original_tgs }}"
      - "targets"

    # This avoids having to wait for 'elb_target' to serially deregister each
    # target group.  An alternative would be to run all of the 'elb_target'
    # tasks async and wait for them to finish.

  - name: wait for all targets to deregister simultaneously
    delegate_to: localhost
    elb_target_facts:
      get_unused_target_groups: false
      instance_id: "{{ ansible_ec2_instance_id }}"
      region: "{{ ansible_ec2_placement_region }}"
    register: target_facts
    until: (target_facts.instance_target_groups | length) == 0
    retries: 60
    delay: 10

  - name: reregister in elbv2s
    elb_target:
      region: "{{ ansible_ec2_placement_region }}"
      target_group_arn: "{{ item.0.target_group_arn }}"
      target_port: "{{ item.1.target_port }}"
      target_az: "{{ item.1.target_az }}"
      target_id: "{{ item.1.target_id }}"
      state: present
      target_status: "initial"
    with_subelements:
      - "{{ original_tgs }}"
      - "targets"

  # wait until all groups associated with this instance are 'healthy' or
  # 'unused'
  - name: wait for registration
    elb_target_facts:
      get_unused_target_groups: false
      instance_id: "{{ ansible_ec2_instance_id }}"
      region: "{{ ansible_ec2_placement_region }}"
    register: target_facts
    until: (target_facts.instance_target_groups |
            map(attribute='targets') |
            flatten |
            map(attribute='target_health') |
            rejectattr('state', 'equalto', 'healthy') |
            rejectattr('state', 'equalto', 'unused') |
            list |
            length) == 0
    retries: 61
    delay: 10

# using the target groups to generate AWS CLI commands to reregister the
# instance - useful in case the playbook fails mid-run and manual
#            rollback is required
  - name: "reregistration commands: ELBv2s"
    debug:
      msg: >
             aws --region {{ansible_ec2_placement_region}} elbv2
             register-targets --target-group-arn {{item.target_group_arn}}
             --targets{%for target in item.targets%}
             Id={{target.target_id}},
             Port={{target.target_port}}{%if target.target_az%},AvailabilityZone={{target.target_az}}
             {%endif%}
             {%endfor%}
    loop: "{{target_facts.instance_target_groups}}"

Return Values

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

Key Returned Description

instance_target_groups

complex

always

a list of target groups to which the instance is registered to


target_group_arn

string

always

The ARN of the target group


Sample:

['arn:aws:elasticloadbalancing:eu-west-1:111111111111:targetgroup/target-group/deadbeefdeadbeef']

target_group_type

string

always

Which target type is used for this group


Sample:

['ip', 'instance']

targets

complex

always

A list of targets that point to this instance ID


target_az

string

when an AZ is associated with this instance

which availability zone is explicitly associated with this target


Sample:

['us-west-2a']

target_health

complex

always


description

-

if state!=present

description of target health


Sample:

['Target desregistration is in progress']

reason

-

if state!=healthy

reason code for target health


Sample:

['Target.Deregistration in progress']

state

-

always

health state


Sample:

['healthy', 'draining', 'initial', 'unhealthy', 'unused', 'unavailable']

target_id

string

always

the target ID referiing to this instance


Sample:

['i-deadbeef', '1.2.3.4']

target_port

string

always

which port this target is listening on


Sample:

[80]




Status

Authors

  • Yaakov Kuperman (@yaakov-github)

Hint

If you notice any issues in this documentation you can edit this document to improve it.


© 2012–2018 Michael DeHaan
© 2018–2019 Red Hat, Inc.
Licensed under the GNU General Public License version 3.
https://docs.ansible.com/ansible/2.8/modules/elb_target_facts_module.html