I also have this message with the deployment of Gluster. I tried the modifications and it doesn't seem to work. Did you succeed ? here error : TASK [gluster.infra/roles/backend_setup : Change to Install lvm tools for RHEL systems.] *** task path: /etc/ansible/roles/gluster.infra/roles/backend_setup/tasks/main.yml:33 fatal: [ovnode2.telecom.lan]: FAILED! => {"changed": false, "msg": "The Python 2 yum module is needed for this module. If you require Python 3 support use the `dnf` Ansible module instead."} fatal: [ovnode1.telecom.lan]: FAILED! => {"changed": false, "msg": "The Python 2 yum module is needed for this module. If you require Python 3 support use the `dnf` Ansible module instead."} fatal: [ovnode3.telecom.lan]: FAILED! => {"changed": false, "msg": "The Python 2 yum module is needed for this module. If you require Python 3 support use the `dnf` Ansible module instead."}