This role places Ceph hosts into maintenance mode using cephadm.
This role should be executed on one host at a time. This can be achieved by
adding serial: 1 to a play.
- The role assumes target hosts connection over SSH with user that has passwordless sudo configured.
- Either direct Internet access or private registry with desired Ceph image accessible to all hosts is required.
This role assumes the existence of the following groups:
mons
with at least one host in it - see the cephadm role for more details.