RGW documentation: relationships between zonegroups?

[Richard Chan <richard@xxxxxxxxxxxxxxxxxxxx>]

Hi Cephers

From the RGW documentation:

"A zonegroup map is a configuration structure that holds the map of the entire system, ie. which zonegroup is the master, relationships between different zonegroups and certain configurables like storage policies."

Could someone explain how different zonegroups could be related? Is this similar to the federated region concept where the namespace is global but zones in different zonegroups are not replicated?

Is the following translation of the federated doc correct?

"The data synchronization agent replicates the metadata of master zone in the master region(?zonegroup) to a master zone in a secondary region(?zonegroup). Metadata consists of gateway users and buckets, but not the objects within the buckets–ensuring a unified namespace across the cluster(?realm)". The master zone of the master region(?zonegroup) is the source for the master zone of the secondary region and it gets selected automatically.

--

Richard Chan

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