An SSH key is required by Ansible and several other system management services on the system. If an SSH key is not available, then the
Configuration Framework Service (CFS) is unusable, and Ansible cannot be invoked from ncn-w001. The SSH key is created in two parts,
with a public and private key. The id_rsa.pub and id_rsa key values are located in the /root/.ssh directory on ncn-w001.
Important: Changing the SSH key can have serious implications. The loss of the private key can result in administrators no longer being able to connect to other nodes or containers via SSH. Ansible also uses SSH as the root user, so Ansible plays will fail as a result of the loss of the private key.
There is only one copy of the private part of the key, and that resides on ncn-w001. If that is lost, then passwordless SSH is no
longer possible between ncn-w001 and the rest of the system.