gce_mig – Create, Update or Destroy a Managed Instance Group (MIG)

• Synopsis
• Requirements
• Parameters
• Notes
• Examples
• Return Values
• Status

Synopsis

• Create, Update or Destroy a Managed Instance Group (MIG). See https://cloud.google.com/compute/docs/instance-groups for an overview. Full install/configuration instructions for the gce* modules can be found in the comments of ansible/test/gce_tests.py.

Requirements

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

• python >= 2.6
• apache-libcloud >= 1.2.0

Parameters

Notes

Examples

# Following playbook creates, rebuilds instances, resizes and then deletes a MIG.
# Notes:
# - Two valid Instance Templates must exist in your GCE project in order to run
#   this playbook.  Change the fields to match the templates used in your
#   project.
# - The use of the 'pause' module is not required, it is just for convenience.
- name: Managed Instance Group Example
  hosts: localhost
  gather_facts: False
  tasks:
    - name: Create MIG
      gce_mig:
        name: ansible-mig-example
        zone: us-central1-c
        state: present
        size: 1
        template: my-instance-template-1
        named_ports:
        - name: http
          port: 80
        - name: foobar
          port: 82

    - name: Pause for 30 seconds
      pause:
        seconds: 30

    - name: Recreate MIG Instances with Instance Template change.
      gce_mig:
        name: ansible-mig-example
        zone: us-central1-c
        state: present
        template: my-instance-template-2-small
        recreate_instances: yes

    - name: Pause for 30 seconds
      pause:
        seconds: 30

    - name: Resize MIG
      gce_mig:
        name: ansible-mig-example
        zone: us-central1-c
        state: present
        size: 3

    - name: Update MIG with Autoscaler
      gce_mig:
        name: ansible-mig-example
        zone: us-central1-c
        state: present
        size: 3
        template: my-instance-template-2-small
        recreate_instances: yes
        autoscaling:
          enabled: yes
          name: my-autoscaler
          policy:
            min_instances: 2
            max_instances: 5
            cool_down_period: 37
            cpu_utilization:
              target: .39
            load_balancing_utilization:
              target: 0.4

    - name: Pause for 30 seconds
      pause:
        seconds: 30

    - name: Delete MIG
      gce_mig:
        name: ansible-mig-example
        zone: us-central1-c
        state: absent
        autoscaling:
          enabled: no
          name: my-autoscaler

Return Values

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

Status

• This module is not guaranteed to have a backwards compatible interface. [preview]
• This module is maintained by the Ansible Community. [community]

Authors

• Tom Melendez (@supertom) <tom@supertom.com>