MongoDB Backup, Restore, and Replica Set Workflows

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Use mongodump, mongorestore, replica set commands, and diagnostic tools for operational MongoDB workflows.

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## Backup and restore

Dump one database

↗#

mongodump --uri="mongodb://localhost:27017/appdb" --out=./dump

# Create a binary dump of a database.

Dump one collection

↗#

mongodump --uri="mongodb://localhost:27017/appdb" --collection=users --out=./dump

# Back up only a single collection.

Restore a dump and drop existing data first

↗#

mongorestore --uri="mongodb://localhost:27017/appdb" --drop ./dump

# Restore into a collection or database after clearing prior content.

Restore only selected namespaces

↗#

mongorestore --uri="mongodb://localhost:27017" --nsInclude="appdb.users" ./dump

# Restore a subset of data from a larger dump.

Create a compressed archive dump

↗#

mongodump --uri="mongodb://localhost:27017/appdb" --archive | gzip > appdb.archive.gz

# Stream a dump to a gzip archive.

## Replica set and diagnostics

Check replica set status

↗#

rs.status()

# Inspect members, state, and health.

Initiate a simple replica set

↗#

rs.initiate()

# Initialize a replica set on a self-managed deployment.

Watch server metrics with mongostat

↗#

mongostat --uri="mongodb://localhost:27017"

# See high-level runtime activity.

Watch read and write time with mongotop

↗#

mongotop --uri="mongodb://localhost:27017"

# See how much time collections spend reading and writing.

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