Database Reference
In-Depth Information
Chapter 9. Migrating Instances and
Reducing Downtime
Migrating a MongoDB instance to another machine is a common situation that you might
face. This migration could be used to upgrade the server or move the instance to another
data center. In the production environment, it's important to avoid downtime while moving
the database to another machine.
The common method to move the instance is installing the database engine on the new
server, copying the database path from an existing server, pasting it into the new server, and
then starting a new instance. This method has some problems, as you should disable writ-
ing while moving database logs to the new server. In this chapter, we will introduce a way
to move the entire database from an existing server to another server with no downtime.
