How to delegate facts to localhost from a play targeting remote hosts

ansible version: 2.9.16 running on RHEL 7.9 python ver = 2.7.5 targeting windows 2016 servers. ( should behave the same for linux target servers too)

EDIT: Switched to using host specific variables in inventory to avoid confusion that Iam just trying to print hostnames of a group. Even here its a gross simplification. Pretend that var1 is obtained dynamically for each server instead of being declared in the inventory file.

My playbook has two plays. One targets 3 remote servers ( Note: serial: 0 i.e Concurrently ) and another just the localhost. In play1 I am trying to delegate facts obtained from each of these hosts to the localhost using delegate_facts and delegate_to. The intent is to have these facts delegated to a single host ( localhost ) so I can use it later in a play2 (using hostvars) that targets the localhost. But strangely thats not working. It only has information from the last host from Play1.

Any help will be greatly appreciated.

my inventory file inventory/test.ini looks like this:

[my_servers]svr1 var1='abc'svr2 var1='xyz'svr3 var1='pqr'

My Code:

## Play1- name: Main play that runs against multiple remote servers and builds a list.hosts: 'my_servers' # my inventory group that contains 3 servers svr1,svr2,svr3any_errors_fatal: falseignore_unreachable: truegather_facts: trueserial: 0tasks:- name: initialize my_server_list as a list and delegate to localhost set_fact:my_server_list: []delegate_facts: yesdelegate_to: localhost- command: /root/complex_script.shregister: result- set_fact:my_server_list: "{{ my_server_list + hostvars[inventory_hostname]['result.stdout'] }}"# run_once: true ## Commented as I need to query the hostvars for each host where this executes.delegate_to: localhostdelegate_facts: true- name: "Print list - 1"debug:msg: - "{{ hostvars['localhost']['my_server_list'] | default(['NotFound']) | to_nice_yaml }}" # run_once: true- name: "Print list - 2"debug:msg: - "{{ my_server_list | default(['NA']) }}" ## Play2- name: Print my_server_list which was built in Play1hosts: localhostgather_facts: trueserial: 0tasks:- name: "Print my_server_list without hostvars "debug:msg: - "{{ my_server_list | to_nice_json }}" # delegate_to: localhost- name: "Print my_server_list using hostvars"debug:msg: - "{{ hostvars['localhost']['my_server_list'] | to_nice_yaml }}" # delegate_to: localhost

###Output###

$ ansible-playbook -i inventory/test.ini delegate_facts.yml

PLAY [Main playbook that runs against multiple remote servers and builds a list.] ***********************************************************************************************************TASK [Gathering Facts] **********************************************************************************************************************************************************************ok: [svr3]ok: [svr1]ok: [svr2]TASK [initialize] ***************************************************************************************************************************************************************************ok: [svr1]ok: [svr2]ok: [svr3]TASK [Build a list of servers] **************************************************************************************************************************************************************ok: [svr1]ok: [svr2]ok: [svr3]TASK [Print list - 1] ***********************************************************************************************************************************************************************ok: [svr1] =>msg:- |-- pqrok: [svr2] =>msg:- |-- pqrok: [svr3] =>msg:- |-- pqrTASK [Print list - 2] ***********************************************************************************************************************************************************************ok: [svr1] =>msg:- - NAok: [svr2] =>msg:- - NAok: [svr3] =>msg:- - NAPLAY [Print my_server_list] *****************************************************************************************************************************************************************TASK [Gathering Facts] **********************************************************************************************************************************************************************ok: [localhost]TASK [Print my_server_list without hostvars] ************************************************************************************************************************************************ok: [localhost] =>msg:- |-["pqr"]TASK [Print my_server_list using hostvars] **************************************************************************************************************************************************ok: [localhost] =>msg:- |-- pqrPLAY RECAP **********************************************************************************************************************************************************************************localhost : ok=3 changed=0 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0svr1 : ok=5 changed=0 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0svr2 : ok=5 changed=0 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0svr3 : ok=5 changed=0 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0Playbook run took 0 days, 0 hours, 0 minutes, 13 seconds

###Expected Output###I was expecting the last two debug statements in Play2 to contain the values of var1 for all the servers something like this:

 TASK [Print my_server_list using hostvars] **************************************************************************************************************************************************ok: [localhost] =>msg:- |-- abc- xyz- pqr