def get_key(cluster, user, user_key, name, dest, container_image=None):
    '''
    Get a CephX key (write on the filesystem)
    '''

    cmd_list = []

    args = [
        'get',
        name,
        '-o',
        dest,
    ]

    cmd_list.append(generate_cmd(sub_cmd=['auth'],
                                 args=args,
                                 cluster=cluster,
                                 user=user,
                                 user_key=user_key,
                                 container_image=container_image))

    return cmd_list

    Get a CephX key (write on the filesystem)
    
library/ceph_key.py