How declare two prompt variables for hosts in ansible playbook - ansible

Question

How declare two prompt variables for hosts in ansible playbook, I tried below Playbook but without luck.
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Thank you in advance.
---
- name: MD5 File Check
gather_facts: false
hosts: "{{ cluster_host_1 }}", "{{cluster_host_2 }}"
hosts: localhost
remote_user: sv_operator
vars_prompt:
- name: "file_1"
prompt: "File name"
private: no
- name: "cluster_host_1"
prompt: "Enter 1st Host name"
private: no
- name: "cluster_host_2"
prompt: "Enter 2nd Host Name"
private: no
tasks:
- stat:
path: "/tmp/{{ file_1 }}"
checksum_algorithm: sha256
register: output
delegate_to: "{{ cluster_host_1 }}"
- debug:
msg: "{{ output.stat.checksum }}"
- stat:
path: "/tmp/{{ file_2 }}"
checksum_algorithm: sha256
register: output_
delegate_to: "{{ cluster_host_2 }}"
- debug:
msg: "{{ output_.stat.checksum }}"

Answer 1

Given the remote hosts and /tmp/file1
shell> ssh admin#test_01 sha256 /tmp/file1
SHA256 (/tmp/file1) = e2611a1fac7fc2ab99d2e792ad84f34e66740d6a3d77b97b4da39a3758357da0
shell> ssh admin#test_02 sha256 /tmp/file1
SHA256 (/tmp/file1) = 109f60103192b5c8f4e33c26b4f9c7b94489bf8de0325497b7f5a0668dc1a402
The playbook below
shell> cat playbook.yml
- name: SHA256 File Check
hosts: localhost
gather_facts: false
vars_prompt:
- name: "file_1"
prompt: "File name"
private: no
- name: "cluster_host_1"
prompt: "Enter 1st Host name"
private: no
- name: "cluster_host_2"
prompt: "Enter 2nd Host Name"
private: no
tasks:
- stat:
path: "/tmp/{{ file_1 }}"
checksum_algorithm: sha256
register: output
delegate_to: "{{ cluster_host_1 }}"
- debug:
msg: "{{ output.stat.checksum }}"
- stat:
path: "/tmp/{{ file_1 }}"
checksum_algorithm: sha256
register: output_
delegate_to: "{{ cluster_host_2 }}"
- debug:
msg: "{{ output_.stat.checksum }}"
works as expected
shell> ansible-playbook playbook.yml
File name: file1
Enter 1st Host name: test_01
Enter 2nd Host Name: test_02
PLAY [SHA256 File Check] ****
TASK [stat] ****
ok: [localhost -> test_01]
TASK [debug] ****
ok: [localhost] =>
msg: e2611a1fac7fc2ab99d2e792ad84f34e66740d6a3d77b97b4da39a3758357da0
TASK [stat] ****
ok: [localhost -> test_02]
TASK [debug] ****
ok: [localhost] =>
msg: 109f60103192b5c8f4e33c26b4f9c7b94489bf8de0325497b7f5a0668dc1a402
PLAY RECAP ****
localhost: ok=4 changed=0 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0

Answer 2

If you want your play to run on two hosts, declared through variables. You have two options.
Option 1:
Since your target hosts are comma separated, you might as well input them that way.
- hosts: '{{ my_hosts }}'
gather_facts: false
remote_user: 'sv_operator'
vars_prompt:
- name: 'my_hosts'
prompt: 'Comma separated list of hosts'
private: no
Then when prompted:
Comma separated list of hosts: host1.local,host2.local
Option 2:
Capture each host in individual variable like host_1 and host_2, then call it as a list in a play.
- hosts:
- '{{ host_1 }}'
- '{{ host_2 }}'
gather_facts: false
remote_user: 'sv_operator'
vars_prompt:
- name: 'host_1'
prompt: 'First host'
private: no
- name: 'host_2'
prompt: 'Second host'
private: no
Then when prompted:
First host: host1.local
Second host: host2.local