Specifies how to handle instances when a node in the group undergoes
maintenance. Set to one of: DEFAULT, RESTART_IN_PLACE, or
MIGRATE_WITHIN_NODE_GROUP. The default value is DEFAULT. For more
information, see Maintenance policies.
Values:
UNDEFINED_MAINTENANCE_POLICY (0):
A value indicating that the enum field is not
set.
DEFAULT (115302945):
Allow the node and corresponding instances to
retain default maintenance behavior.
MAINTENANCE_POLICY_UNSPECIFIED (72964182):
No description available.
MIGRATE_WITHIN_NODE_GROUP (153483394):
When maintenance must be done on a node, the
instances on that node will be moved to other
nodes in the group. Instances with
onHostMaintenance = MIGRATE will live migrate to
their destinations while instances with
onHostMaintenance = TERMINATE will terminate and
then restart on their destination nodes if
automaticRestart = true.
RESTART_IN_PLACE (228647325):
Instances in this group will restart on the
same node when maintenance has completed.
Instances must have onHostMaintenance =
TERMINATE, and they will only restart if
automaticRestart = true.