I'd like to create two playbooks, one to stop an environment, another to start it.
Part of the environment is a RabbitMQ cluster, for which stop/start order is quite important, specifically the last node stopped needs to be the first node started.
I was wondering if there is a way to specify a reverse order for running a task against a group. That way I could apply the stop with serial 1, and the start with serial 1 and reverse group order.
I haven't found a way to do that but to define the rabbitmq host group twice (under different names), in inverted order, which seems a bit distasteful.
Also attempted following:
- hosts: "{ myhostsgroup | sort(reverse=False) }"
serial: 1
And
- hosts: "{ myhostsgroup | reverse }"
serial: 1
But result stays the same, whichever case and its variation (reverse=True, reverse|list) is attempted
Any help would be greatly appreciated.