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MongoDB Cluster-to-Cluster Sync

Reference

mongosync
Overview of mongosync binary.
Configuration
Configure mongosync instances at startup using a configuration file.
mongosync API Endpoints
API endpoints to interact with mongosync.
mongosync States
States that mongosync enters depending on requests received.
Filtered Sync
Inclusion and exclusion filters to specify which databases and collections to include in sync.
Authentication Using Workload Identity Federation
Use Workload Identity Federation to authenticate with clusters.
oplog Sizing
Increase the size of the oplog on the source cluster for large data sets.
Limitations
Limitations of mongosync.
Logging
A running log of events, including entries such as the copying collections and indexes, change stream events, and API calls.
User Permissions
Required permissions on the source and destination clusters for the user specified in the mongosync connection string.
Telemetry
Anonymous, aggregated usage data to improve MongoDB products.
Verify Data Transfer
Verify the successful transfer of your data before you switch your application to the destination cluster.
mongosync Versioning
Understand the semantic versioning of mongosync.

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Sync Sharded Clusters