terminate_ec2.yml

---
- name: get ec2 instance info
  hosts: ec2hosts
  user: ubuntu
  gather_facts: false
  tasks:
    - name: get ec2 facts
      action: ec2_facts
      register: instance_info

    - name: Confirm termination
      pause: prompt='Are you sure you want to terminate "{{ instance_info.ansible_facts.ansible_ec2_instance_id }}"? Press return to terminate the instance. Press Ctrl+c and then "a" to abort.'

- name: terminate ec2 hosts launched by ansible
  hosts: localhost
  vars: # it seems like there should be an easier way to get the instance_info from the play above...
    instance_id: "{{ hostvars[groups['ec2hosts'][0]]['instance_info']['ansible_facts']['ansible_ec2_instance_id'] }}"
    ec2_region: "{{ hostvars[groups['ec2hosts'][0]]['instance_info']['ansible_facts']['ansible_ec2_placement_region'] }}"
  gather_facts: false
  tasks: 
    - name: terminate instance
      connection: local
      ec2:
        aws_access_key: "{{ ec2_access_key }}"
        aws_secret_key: "{{ ec2_secret_key }}"
        state: absent 
        instance_ids: '{{ instance_id }}'
        region: "{{ ec2_region }}"
    - name: update inventory
      lineinfile:
        dest: hosts
        regexp: "{{ groups['ec2hosts'][0] }}"
        state: absent