Description of problem:
rolling update fails if user misses to add mgrs to inventory before initiating playbook (valid scenario - upgrade from 2.x to 3.x) [1]
This can be implemented to site.yml or site-docker.yml to alert the user if he misses out adding at least 1 mgr to the inventory
Version-Release number of selected component (if applicable):
ceph-ansible-3.2.38-1.el7cp.noarch
[1] https://github.com/ceph/ceph-ansible/blob/stable-3.2/infrastructure-playbooks/rolling_update.yml#L39-L43
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2020:1320