NB: As an example, the machines are defined in file inventory.yaml with the following content: # VMs all: hosts: vm01: vm02: vm03: vm04: vm05: vm06: # Groups dev: hosts: vm01: vm02: test: hosts: vm03: vm04: prod: hosts: vm05: vm06: # Parent Groups lan: children: dev: test: wan: children: prod: ⚠ If you did not name your inventory file inventory.yaml at root folder, you’ll need to add the argument -i <inventory_filename> to all the commands in the following post....
Type of data structures Since Ansible is based on Python. There are two main data structures in Ansible: list and dictionary. List Initialization of a list - name: Initialize an empty list set_fact: list: [] Result is: {"list": []} Append element to a list - name: Append element to list set_fact: list: "{{ list + [ 'element_1' ] }}" Result is: {"list": ["element_1"]} Append multiple elements to a list - name: Get list of files in current directory shell: "ls" register: ls_files - name: Append filtered elements (only yaml file) to list set_fact: list: "{{ list + [ item ] }}" loop: "{{ ls_files....