promote_ami.yml

---
- hosts: localhost
  vars:
    aws_region: us-east-1
  vars_prompt:
    - name: "new_ami"
      prompt: "What is the new AMI id?"
      private: no
  tasks:
  - debug:
      msg: "New AMI id is {{ new_ami }}"

  - ec2_ami_find:
      is_public: no
      region: "{{ aws_region }}"
      ami_tags:
        ansible: "true"
        vpc_support: "true"
        env: "prod"
      no_result_action: fail
    register: ami_find

  - name: set old ami variable
    set_fact:
      old_ami: "{{ item.ami_id }}"
    with_items: "{{ ami_find.results }}"
    loop_control:
      label: "{{ item.ami_id }}"

  - name: remove tags from old ami
    ec2_tag:
      region: "{{ aws_region }}"
      resource: "{{ old_ami }}"
      tags:
        Name: "Demoted on {{ ansible_date_time.date }}"
        env: ""

  - name: promote new ami to prod
    ec2_tag:
      region: "{{ aws_region }}"
      resource: "{{ new_ami }}"
      state: present
      tags:
        Name: latest
        ansible: "true"
        vpc_support: "true"
        env: "prod"