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6.7. Ensuring DNS Global Forwarders are disabled in IdM using Ansible

Follow this procedure to use an Ansible playbook to ensure DNS Global Forwarders are disabled in IdM. In the example procedure below, the IdM administrator ensures that the forwarding policy for the global forwarder is set to none, which effectively disables the global forwarder.

Prerequisites

  • You have configured your Ansible control node to meet the following requirements:

    • You are using Ansible version 2.15 or later.
    • You have installed the ansible-freeipa package.
    • The example assumes that in the ~/MyPlaybooks/ directory, you have created an Ansible inventory file with the fully-qualified domain name (FQDN) of the IdM server.
    • The example assumes that the secret.yml Ansible vault stores your ipaadmin_password and that you have access to a file that stores the password protecting the secret.yml file.
  • The target node, that is the node on which the freeipa.ansible_freeipa module is executed, is part of the IdM domain as an IdM client, server or replica.

Procedure

  1. Navigate to the /usr/share/ansible/collections/ansible_collections/freeipa/ansible_freeipa/playbooks/dnsconfig directory: 

    $ cd /usr/share/ansible/collections/ansible_collections/freeipa/ansible_freeipa/playbooks/dnsconfig

  2. Verify the contents of the disable-global-forwarders.yml Ansible playbook file which is already configured to disable all DNS global forwarders. For example: 

    $ cat disable-global-forwarders.yml
---
- name: Playbook to disable global DNS forwarders
  hosts: ipaserver

  vars_files:
  - /home/user_name/MyPlaybooks/secret.yml
  tasks:
  - name: Disable global forwarders.
    freeipa.ansible_freeipa.ipadnsconfig:
      forward_policy: none

    For details about all variables used in the playbook, see the /usr/share/ansible/collections/ansible_collections/freeipa/ansible_freeipa/README-dnsconfig.md file on the control node.

  3. Run the playbook: 

    $ ansible-playbook --vault-password-file=password_file -v -i inventory.file disable-global-forwarders.yml
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