Ansible 2.1.1 experimentation with conditional include handling

00-full-command-transcript.sh

#!/bin/bash

apt-get update && \
  apt-get purge -y nano && \
  apt-get install -y git vim tmux fail2ban build-essential python2.7 python-dev libssl-dev libffi-dev

curl --silent --show-error --retry 5 https://bootstrap.pypa.io/get-pip.py | sudo python2.7

pip install -U ansible==2.1.1

ansible-playbook -i 01-inventory.ini 02-playbook.yml -vv

01-inventory.ini

[all]
localhost1 ansible_connection=local
localhost2 ansible_connection=local
localhost3 ansible_connection=local
localhost4 ansible_connection=local
localhost5 ansible_connection=local

[group1]
localhost1
localhost2
localhost3
localhost4
localhost5

02-playbook.yml

---
- name: Test conditional include (using inventory/group)
  hosts: group1
  gather_facts: false
  tasks:
     - include: 03-included-task.yml
       static: no
       when: inventory_hostname == groups['group1'][0]
  vars:
    include_me: "{{ inventory_hostname == groups['group1'][0] }}"

- name: Test conditional include (using vars)
  hosts: group1
  gather_facts: false
  tasks:
     - include: 03-included-task.yml
       static: no
       when: include_me | bool
  vars:
    include_me: "{{ inventory_hostname == groups['group1'][0] }}"

03-included-task.yml

---
- debug:
    msg: "included-task -> include_me: {{ include_me }}"
  when: include_me is defined

- debug:
    msg: "included-task -> arbitrary message"