code: def create_osd_keyring(conn, cluster, key):
      
      logger = conn.logger
      path = '/var/lib/ceph/bootstrap-osd/{cluster}.keyring'.format(
          cluster=cluster,
      )
      if not conn.remote_module.path_exists(path):
          logger.warning('osd keyring does not exist yet, creating one')
          conn.remote_module.write_keyring(path, key)
docs: Run on osd node, writes the bootstrap key if not there yet.