Racks
A rack defines a failure domain.
A failure domain can be a region’s availability zone (zone), or a cluster node (host).
A resource set can be mapped to a rack. For example, to guarantee high availability over different availability zones, multiple resource sets are created in different racks. You can also enforce affinity and anti-affinity rules to minimize cross-AZ traffic.
When a resource set is mapped to a rack, all the resource set’s replicas will be placed in the same failure domain.
To use a rack, assign it to a resource set:
spec:
global:
racks:
rack1: {}
rack2: {}
rack3: {}
resourceSets:
shared-az1:
rack: rack1
shared-az2:
rack: rack2
shared-az3:
rack: rack3