Cluster-to-Cluster Sync
mongosync binaries are not supported or tested for use with non-genuine MongoDB deployments. While the tools may work on these deployments, compatibility is not guaranteed.Cluster-to-Cluster Sync replicates data and writes from one cluster to another until the sync is finalized. You can use this tool to perform one-time data migrations between MongoDB clusters with minimal downtime.
For more information about mongosync and destination cluster behavior
during execution, see Mid-sync Considerations.
You can enable Cluster-to-Cluster Sync with the mongosync utility.
For an overview of the mongosync process, see About mongosync.
Important
Until you've called commit on mongosync and canWrite successfully
returns true, the destination cluster cannot be used to accept
application read or write traffic.
Do not use mongosync for maintaining Disaster Recovery clusters.
To get started with mongosync, refer to the Quick Start Guide. For more detailed information, refer to the
Installation or Connecting mongosync page that best fits your
situation. See also the Limitations page for important
restrictions and the mongosync Behavior page for behavior information.
Warning
mongosync does not check for compliance with the
documented limitations. Please ensure that
your application is not affected by the limitations.
Running mongosync in the presence of one of these
limitations could lead to undefined behavior on
the destination cluster.
The Frequently Asked Questions (FAQ) page addresses questions users have asked about mongosync.