Validate an EC2 instance by tag with Ansible

ansible_tags.yml

---
- hosts: localhost

  tasks:
    - name: Gather facts
      action: ec2_facts
      register: ami_id

    - name: Print AMI ID
      debug: msg={{ ami_id['ansible_facts']['ansible_ec2_instance_id'] }}

    - name: Get tags
      ec2_tag: resource={{ ami_id['ansible_facts']['ansible_ec2_instance_id'] }} region=us-west-2 state=list
      register: role

    - name: Validate role
      debug: msg="This is a staging server"
      when: role['tags']['env'] == 'staging'