If the node for an OSD does not exist within kubernetes, the PDB
reconciliation logic will fail to make progress. This can be problematic
as new OSDs added to the cluster may not be protected by OSD PDBs after
they are added since the PDB reconcilation logic is failing.
The solution is to treat non existing OSD nodes as drained which is
logically consistent with treating unschedulable OSD nodes as drained as
you cannot schedule a pod onto a node which does not exist.
Fixes: #16086
Signed-off-by: Elias Carter <elias@dropbox.com>
Elias Carter
5f2d6c01d7