Demonstrate Ansible not completing all Plays when failures are found

failed-equals-batch-kills-playbook.yml

---
- name: Play 0 (all is good)
  hosts: all
  become: false
  connection: local
  gather_facts: no
  tasks:
    - name: Task 1 -- Runs OK
      command: date

- name: Play 1 (all, creates some failures)
  hosts: all
  become: false
  connection: local
  gather_facts: no
  tasks:
    - name: Task 1 -- Creates Failure OK
      command: date
      failed_when: "'host2' in inventory_hostname"

- name: Play 2 (group with only failures)
  hosts:
    - group-with-only-failures
  become: false
  connection: local
  gather_facts: no
  tasks:
    - name: Task 2
      command: date

- name: Play 3 (all, NEVER GETS RUN)
  hosts:
    - all
  become: false
  connection: local
  gather_facts: no
  tasks:
    - name: Task 3
      command: date

hosts

[group-with-some-failures]
host2
host1

[group-with-only-failures]
host2

[group-with-only-success]
host1

no-hosts-remaining.yml

---
- name: Play 0 (all is good)
  hosts: all
  become: false
  connection: local
  gather_facts: no
  tasks:
    - name: Task 1 -- Runs OK
      command: date

- name: Play 1 (all, creates some failures)
  hosts: all
  become: false
  connection: local
  gather_facts: no
  tasks:
    - name: Task 1 -- Creates Failure OK
      command: date
      failed_when: "'host2' in inventory_hostname"

- name: Play 2 (all, spams NO HOSTS LEFT)
  hosts:
    - all
  become: false
  connection: local
  gather_facts: no
  tasks:
    - command: date

- name: Play 3a (group with only failures)
  hosts:
    - group-with-only-failures
  become: false
  connection: local
  gather_facts: no
  tasks:
    - name: Task 3
      command: date

Play 4 will not execute. In Ansible v1.X, the play would execute.

Verify with:

ansible-playbook -i ansible-14665.hosts ansible-14665.yml