Experimenting with getting a specific host's IP in Ansible

how-do-i-host.yml

---
- name: "debug hosts"
  hosts: "tag_ov_env_future"
  tasks:
    - name: "what is play_hosts?"
      debug: var=play_hosts

    # - name: "what are the variables for these hosts?"
    #   debug: "var=hostvars[item]['ec2_dns_name']"
    #   with_items: play_hosts
    #   when: hostvars[item]["ec2_tag_role"] == "media-queue"

    - name: "let's find the media queue's IP"
      local_action:
        module: set_fact
        media_queue_host: "{{ hostvars[item]['ec2_dns_name'] }}"
      with_items: play_hosts
      when: hostvars[item]["ec2_tag_role"] == "media-queue"

    - name: "let's figure out if we figured it out"
      local_action:
        module: debug
        var: media_queue_host