1. Requirements: Data migration of Mongodb cluster in different places needs to be able to support full volume+incremental migration.
2. Environment: Mongodb Version 3.2.10, Fragmented Cluster Mode. There are more than 200 million data.
3. We have tried 360 mongosync and found that there are restrictions on mongodb version. The source library does not support versions above 2.6 (it may be that the driver does not support it).
Ask the great god, is there any good, efficient and reliable migration plan?
The simplest way is to deploy one replication set node for each slice offsite, including config. After data synchronization is completed, switch the primary node to the new node, and then move the other nodes out of the replication set, then your cluster will have arrived at the new machine room.