Ansible - task serial 1 reverse order -

i'd create 2 playbooks, 1 stop environment, start it.

part of environment rabbitmq cluster, stop/start order quite important, last node stopped needs first node started.

i wondering if there way specify reverse order running task against group. way apply stop serial 1, , start serial 1 , reverse group order.

i haven't found way define rabbitmq host group twice (under different names), in inverted order, seems bit distasteful.

also attempted following:

- hosts: "{ myhostsgroup | sort(reverse=false) }"   serial: 1 

and

- hosts: "{ myhostsgroup | reverse }"   serial: 1 

but result stays same, whichever case , variation (reverse=true, reverse|list) attempted

any appreciated.

you can create dynamic groups in runtime:

--- - hosts: localhost   gather_facts: no   tasks:     - add_host:         name: "{{ item }}"         group: forward       with_items: "{{ groups['mygroup'] }}"      - add_host:         name: "{{ item }}"         group: backward       with_items: "{{ groups['mygroup'] | reverse | list }}"  - hosts: forward   gather_facts: no   serial: 1   tasks:     - debug:  - hosts: backward   gather_facts: no   serial: 1   tasks:     - debug: