2장. Using Ansible to manage the replication topology in IdM

Procedure

1. Navigate to your ~/MyPlaybooks/ directory:

   $ cd ~/MyPlaybooks/

2. Copy the add-topologysegment.yml Ansible playbook file provided by the ansible-freeipa package:

   $ cp /usr/share/ansible/collections/ansible_collections/freeipa/ansible_freeipa/playbooks/topology/add-topologysegment.yml add-topologysegment-copy.yml

3. Open the add-topologysegment-copy.yml file for editing.

4. Adapt the file by setting the following variables in the ipatopologysegment task section:

   • Indicate that the value of the ipaadmin_password variable is defined in the secret.yml Ansible vault file.
   • Set the suffix variable to either domain or ca, depending on what type of segment you want to add.
   • Set the left variable to the name of the IdM server that you want to be the left node of the replication agreement.
   • Set the right variable to the name of the IdM server that you want to be the right node of the replication agreement.
   • Ensure that the state variable is set to present.

   This is the modified Ansible playbook file for the current example:

   ---
   - name: Playbook to handle topologysegment
     hosts: ipaserver
   
     vars_files:
     - /home/user_name/MyPlaybooks/secret.yml
     tasks:
     - name: Add topology segment
       ipatopologysegment:
         ipaadmin_password: "{{ ipaadmin_password }}"
         suffix: domain
         left: server.idm.example.com
         right: replica.idm.example.com
         state: present

5. Save the file.

   For details about variables and example playbooks in the FreeIPA Ansible collection, see the /usr/share/ansible/collections/ansible_collections/freeipa/ansible_freeipa/README-topology.md file and the /usr/share/ansible/collections/ansible_collections/freeipa/ansible_freeipa/playbooks/topology directory on the control node.

6. Run the Ansible playbook. Specify the playbook file, the file storing the password protecting the secret.yml file, and the inventory file:

   $ ansible-playbook --vault-password-file=password_file -v -i inventory add-topologysegment-copy.yml