When creating multiple instances using the ec2 module, it returns a dict of instances. If you then want to add those instances to route53, you need to somehow access the nested attributes to get the IP’s and then return them in a comma separated string.
Voila!
--- - hosts: localhost connection: local tasks: - name: create some instances ec2: ... register: ec2 - name: add all the instance ip addresses to route53 route53: ... value: "{{ ec2.instances|map(attribute='public_ip')|join(',') }}"I thought this was brilliant, as it was my first introduction to the wonderful world that is the jinja2 map filter. My thanks go to @no1peanut for replying with the example in #ansible.