42.3. Ensuring the presence of multiple IdM host entries with random passwords using Ansible playbooks

Procedure

1. Create an Ansible playbook file with the fully-qualified domain name (FQDN) of the hosts whose presence in IdM you want to ensure. To make the Ansible playbook generate a random password for each host even when the host already exists in IdM and update_password is limited to on_create, add the random: true and force: true options. To simplify this step, you can copy and modify the example from the /usr/share/ansible/collections/ansible_collections/freeipa/ansible_freeipa/README-host.md Markdown file:

   ---
   - name: Ensure hosts with random password
     hosts: ipaserver
   
     vars_files:
     - /home/user_name/MyPlaybooks/secret.yml
     tasks:
     - name: Hosts host01.idm.example.com and host02.idm.example.com present with random passwords
       freeipa.ansible_freeipa.ipahost:
         ipaadmin_password: "{{ ipaadmin_password }}"
         hosts:
         - name: host01.idm.example.com
           random: true
           force: true
         - name: host02.idm.example.com
           random: true
           force: true
       register: ipahost

2. Run the playbook:

   $ ansible-playbook --vault-password-file=password_file -v -i path_to_inventory_directory/inventory.file path_to_playbooks_directory/ensure-hosts-are-present.yml
   [...]
   TASK [Hosts host01.idm.example.com and host02.idm.example.com present with random passwords]
   changed: [server.idm.example.com] => {"changed": true, "host": {"host01.idm.example.com": {"randompassword": "0HoIRvjUdH0Ycbf6uYdWTxH"}, "host02.idm.example.com": {"randompassword": "5VdLgrf3wvojmACdHC3uA3s"}}}

   注意

   To deploy the hosts as IdM clients using random, one-time passwords (OTPs), see Authorization options for IdM client enrollment using an Ansible playbook or Installing a client by using a one-time password: Interactive installation.

Verification

1. Log in to your IdM server as admin:

   $ ssh admin@server.idm.example.com
   Password:

2. Enter the ipa host-show command and specify the name of one of the hosts:

   $ ipa host-show host01.idm.example.com
     Host name: host01.idm.example.com
     Password: True
     Keytab: False
     Managed by: host01.idm.example.com