Ansible Pilot

Remove Windows Registry path or key on Windows-like systems - Ansible module win_regedit

How to automate the deletion of the Windows Registry “Test” path with one key “hello” under a specific hive Windows-like systems with Ansible Playbook using win_regedit module.

March 17, 2022
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How to Remove Windows Registry key on Windows-like systems with Ansible?

Changing registry values manually can be time-consuming and error-prone. Ansible includes built-in capabilities for managing individual key-value pairs in an idempotent way. I’m going to show you a live demo and some simple Ansible code. I’m Luca Berton and welcome to today’s episode of Ansible Pilot.

Ansible remove Windows Registry on Windows-like systems

Let’s talk about the Ansible module win_regedit. The full name is ansible.windows.win_regedit , which means that is part of the collection of modules specialized to interact with Windows target host. It’s a module pretty stable and out for years and it works in Windows and Windows Server operating systems. It adds, changes, or removes registry keys and values.

Parameters

The only mandatory parameter is “path” which is the full registry key path including the hive to search for. You might like to specify a single “name” of the name of the registry entry. If you want to delete all the paths, basically all the Windows Registry tree but if you want only the single entry you need also to specify the “name” of it. Please be careful! The essential parameter for our use-case is “state” to specify if we would like to add or modify (“present” option) or remove (“absent” option).

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demo

How to Remove Windows Registry key on Windows-like systems accessing the Windows Registry with Ansible Playbook. Specifically, I’m going to delete a Windows Registry key located in “HKEY_LOCAL_MACHINE\Software\Test”.

code

---
- name: windows registry remove
  hosts: all
  vars:
    mypath: 'HKLM:\Software\Test'
  tasks:
    - name: registry remove path
      ansible.windows.win_regedit:
        path: "{{ mypath }}"
        state: absent

execution

ansible-pilot $ ansible-playbook -i virtualmachines/win/inventory windows/registry_remove.yml
PLAY [windows registry remove] ********************************************************************
TASK [Gathering Facts] ****************************************************************************
ok: [WindowsServer]
TASK [registry remove path] ***********************************************************************
changed: [WindowsServer]
PLAY RECAP ****************************************************************************************
WindowsServer              : ok=2    changed=1    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0
ansible-pilot $

idempotency

ansible-pilot $ ansible-playbook -i virtualmachines/win/inventory windows/registry_remove.yml
PLAY [windows registry remove] ********************************************************************
TASK [Gathering Facts] ****************************************************************************
ok: [WindowsServer]
TASK [registry remove path] ***********************************************************************
ok: [WindowsServer]
PLAY RECAP ****************************************************************************************
WindowsServer              : ok=2    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0
ansible-pilot $

before execution

win_regedit before execution

after execution

win_regedit after execution

code with ❤️ in GitHub

Recap

Now you know how to remove the Windows Registry key on Windows-like systems with Ansible.

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