Ansibleのjoinとsequenceのサンプル

join.yml

- name: join and sequence example
  hosts: localhost
  become: no
  gather_facts: False
  vars:
    data: [foo, bar, baz]
  tasks:
  -
    name: join example
    debug: msg="{{ data|join(', ') }}"
  -
    name: sequence example
    debug: msg="{{ 'count %02d'|format(item|int) }}"
    with_sequence: count=4
  -
    name: sequence example 2
    debug: var=item
    with_sequence: start=3 end=1 stride=-1 format=%08d

詳しくは Jinja2のドキュメントなどを参照

• Template Designer Documentation — Jinja Documentation (2.11.x)
• sequence – generate a list based on a number sequence — Ansible Documentation