Ansible: Output of 'loop' with 'register' module

Rohit Sharma 0
Viewed 18

I'm trying to get the output of my Ansible script using register module but the loop I'm using is probably causing some issue.

Whats a default way of using register module with loop?

Code:

---
  - name:
    hosts:
    gather_facts:

    tasks:
        - name: Execute file
          ansible.builtin.shell: 
          environment:
                   "setting environment"
          register: output
          loop:
             "value"

         - debug:
              vars: output.std_lines
ansible-template ansible
1 Answers

Whats a default way of using register module with loop?

It is just registering the result.

The only difference will be, that a single task will provide you just with an dictionary result (or output in your example) and registering in a loop will provide with a list result.results (or output.results in your example). To access the .stdout_lines you will need to loop over the result set .results too.

You may have a look into the following example playbook which will show some aspects of Registering variables, Loops, data structures, dicts and lists and type debugging.

---
- hosts: localhost
  become: false
  gather_facts: false

  tasks:

  - name: Create STDOUT output (single)
    command: 'echo "1"'
    register: result

  - name: Show full result (single)
    debug:
      var: result

  - name: Show '.stdout' (single)
    debug:
      msg: "The result in '.stdout': {{ result.stdout }} is of type {{ result.stdout | type_debug }}"

  - name: Create STDOUT output (loop)
    command: 'echo "{{ item }}"'
    register: result
    loop: [1, 2, 3]
    loop_control:
      label: "{{ item }}"

  - name: Show full result (loop)
    debug:
      var: result

  - name: Show '.stdout' (loop)
    debug:
      msg: "The result in '.stdout': {{ item.stdout }} is of type {{ item.stdout | type_debug }}"
    loop: "{{ result.results }}"
    loop_control:
      label: "{{ item.item }}"

By running it and going through the output you can get familiar with the differences in your tasks.

Further Q&A

... and many more here on SO.

U880D0
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