Issue passing variable to include_task file having add_host in Ansible - ansible

Question

I am dealing with nested loops inorder to build dynamic host using add_host.
Outer Loop: with_items: "{{ command_result.stdout_lines }}" // gets me the list of users
Inner Loop: with_items: "{{ dest_ip.split(',') }}" // gets me the list of IP addresses seperated by comma (,)
The below playbook works fine.
- name: Add hosts
include_tasks: "{{ playbook_dir }}/gethosts.yml"
vars:
dest_ip: "{{ item.split('\t')[0] }}"
file_dets: "{{ item.split('\t')[1] }}"
USER_pass: "anystring"
# USER_pass: "{% if item.split('\t')[3] == 'FrontEnd' %}user1{% elif item.split('\t')[3] == 'BackEnd' %}user2{% else %}{% endif %}"
ansible_host: localhost
install_dir_pass: "anystring"
# install_dir_pass: "{{ item.split('\t')[2] }}"
with_items: "{{ command_result.stdout_lines }}"
Below is my include_task gethost.yml file:
---
- name: Generate JSON data
add_host:
name: "{{ item }}"
groups: dest_nodes
ansible_user: "{{ USER_pass }}"
install_dir: "{{ install_dir_pass }}"
with_items: "{{ dest_ip.split(',') }}"
I get the below error if I uncomment either USER_pass or install_dir_pass and comment the existing value:
TASK [Generate JSON data]
*********************************************************************************************************************************** task path: /app/deployment/gethosts.yml:2 [WARNING]: The loop
variable 'item' is already in use. You should set the loop_var value
in the loop_control option for the task to something else to avoid
variable collisions and unexpected behavior.
fatal: [localhost]: FAILED! => {
"msg": "The task includes an option with an undefined variable. The error was: list object has no element 2\n\nThe error appears to be
in '/app/deployment/gethosts.yml': line 2, column 4, but may\nbe
elsewhere in the file depending on the exact syntax problem.\n\nThe
offending line appears to be:\n\n---\n - name: Generate JSON data\n
^ here\n" }
NO MORE HOSTS LEFT
PLAY RECAP
************************************************************************************************************************************************** localhost : ok=12 changed=1 unreachable=0
failed=1 skipped=0 rescued=0 ignored=0
Requesting a solution to this issue and an explanation of a few questions I have.
The dest_ip is read and works fine with .split(,) method inside of include_task get_hosts.yml file when other variables like install_dir_pass dont seem to work.
When USER_pass and install_dir_pass are given simple string "AnyString" it works and is read fine inside of get_hosts.yml where as if they are assigned values using item.split('\t')[] the playbook errors as above.
I have already tested using debug that all the entries in command_result are good and the values should be populated correctly as below.
- debug:
msg: "{{ item.split('\t')[0] }}"
# msg: "{{ item.split('\t')[1] }}"
#msg: "{{ item.split('\t')[2] }}"
# msg: "{{ item.split('\t')[3] }}"
with_items: "{{ command_result.stdout_lines }}"

Answer 1

As this is very well explained in your error message:
There is a name collision between the item of each nested loops.
You have to set the loop_var name in the loop_control option to resolve the conflict in either of the loops.
I suggest you do this on the include_task so that it solves the problem for any other loop inside your included file. As I have no idea what your command_result.stdout_lines contains exactly, I used in the below example the var name my_result that you should change with something fitting your situation. Note that this var will be available directly in the included file if necessary.
- name: Add hosts
include_tasks: "{{ playbook_dir }}/gethosts.yml"
vars:
dest_ip: "{{ my_result.split('\t')[0] }}"
file_dets: "{{ my_result.split('\t')[1] }}"
USER_pass: "{% if my_result.split('\t')[3] == 'FrontEnd' %}user1{% elif my_result.split('\t')[3] == 'BackEnd' %}user2{% else %}{% endif %}"
ansible_host: localhost
install_dir_pass: "{{ my_result.split('\t')[2] }}"
with_items: "{{ command_result.stdout_lines }}"
loop_control:
loop_var: my_result