Chapter 4. The Redfish modules in RHEL

1. redfish_info: The redfish_info module retrieves information about the remote Out-Of-Band (OOB) controller such as systems inventory.
2. redfish_command: The redfish_command module performs Out-Of-Band (OOB) controller operations like log management and user management, and power operations such as system restart, power on and off.
3. redfish_config: The redfish_config module performs OOB controller operations such as changing OOB configuration, or setting the BIOS configuration.

Procedure

1. Create a playbook file, for example ~/playbook.yml, with the following content:

   ---
   - name: Manage out-of-band controllers using Redfish APIs
     hosts: managed-node-01.example.com
     tasks:
       - name: Get CPU inventory
         redhat.rhel_mgmt.redfish_info:
           baseuri: "<URI>"
           username: "<username>"
           password: "<password>"
           category: Systems
           command: GetCpuInventory
         register: result

2. Validate the playbook syntax:

   $ ansible-playbook --syntax-check ~/playbook.yml

   Note that this command only validates the syntax and does not protect against a wrong but valid configuration.

3. Run the playbook:

   $ ansible-playbook ~/playbook.yml

Procedure

1. Create a playbook file, for example ~/playbook.yml, with the following content:

   ---
   - name: Manage out-of-band controllers using Redfish APIs
     hosts: managed-node-01.example.com
     tasks:
       - name: Power on system
         redhat.rhel_mgmt.redfish_command:
           baseuri: "<URI>"
           username: "<username>"
           password: "<password>"
           category: Systems
           command: PowerOn

2. Validate the playbook syntax:

   $ ansible-playbook --syntax-check ~/playbook.yml

   Note that this command only validates the syntax and does not protect against a wrong but valid configuration.

3. Run the playbook:

   $ ansible-playbook ~/playbook.yml

Procedure

1. Create a playbook file, for example ~/playbook.yml, with the following content:

   ---
   - name: Manages out-of-band controllers using Redfish APIs
     hosts: managed-node-01.example.com
     tasks:
       - name: Set BootMode to UEFI
         redhat.rhel_mgmt.redfish_config:
           baseuri: "<URI>"
           username: "<username>"
           password: "<password>"
   	category: Systems
           command: SetBiosAttributes
           bios_attributes:
             BootMode: Uefi

2. Validate the playbook syntax:

   $ ansible-playbook --syntax-check ~/playbook.yml

   Note that this command only validates the syntax and does not protect against a wrong but valid configuration.

3. Run the playbook:

   $ ansible-playbook ~/playbook.yml