Ansible 2 Cloud Automation Cookbook

How to do it...

Perhaps, the most important feature of an instance group is auto-scaling. In event of high resource requirements, the instance group can scale up to a predefined number automatically:

- name: create an instance group with autoscaling  gce_mig:    name: app-mig    zone: "{{ zone }}"    service_account_email: "{{ service_account_email }}"    credentials_file: "{{ credentials_file }}"    project_id: "{{ project_id }}"    state: present    size: 2    named_ports:    - name: http      port: 80    template: app-template    autoscaling:      enabled: yes      name: app-autoscaler      policy:        min_instances: 2        max_instances: 5        cool_down_period: 90        cpu_utilization:          target: 0.6        load_balancing_utilization:         target: 0.8  tags:  - recipe10