Replication¶

Database replication ensures redundancy, backup, and automatic failover. Replication occurs through groups of servers known as replica sets.

This page lists the documents, tutorials, and reference pages that describe replica sets.

For an overview, see Replication Fundamentals. To work with members, see Replica Set Administration. To configure deployment architecture, see Replication Architectures. To modify read and write operations, see Application Development with Replica Sets. For procedures for performing certain replication tasks, see the list of replication tutorials.

Documentation¶

The following is the outline of the main documentation:

Replication Fundamentals
- Member Configuration Properties
- Failover
- Consistency
- Administration and Operations
Replica Set Administration
- Member Configurations
- Procedures
- Security Considerations for Replica Sets
- Troubleshooting Replica Sets
Replication Architectures
- Three Member Sets
- Sets with Four or More Members
- Geographically Distributed Sets
- Non-Production Members
- Arbiters
Application Development with Replica Sets
- Write Concern
- Read Preference
Replication Internals
- Oplog Internals
- Data Integrity
- Member Configurations
- Security Internals
- Election Internals
- Syncing
Replica Set Commands
- JavaScript Methods
- Database Commands

Tutorials¶

The following tutorials describe certain replica set maintenance operations in detail:

Deploy a Replica Set
Convert a Standalone to a Replica Set
Add Members to a Replica Set
Deploy a Geographically Distributed Replica Set
Change the Size of the Oplog
Force a Member to Become Primary
Change Hostnames in a Replica Set
Convert a Secondary to an Arbiter
Reconfigure a Replica Set with Unavailable Members
Recover MongoDB Data following Unexpected Shutdown

Reference¶

The following describes the replica set configuration object:

Replica Set Configuration

The following describe MongoDB output and status related to replication:

Replica Set Status Reference
Replication Info Reference

MongoDB Manual

About MongoDB Documentation
Installing MongoDB
Replication
- Documentation
  - Replication Fundamentals
  - Replica Set Administration
  - Replication Architectures
  - Application Development with Replica Sets
  - Replication Internals
  - Replica Set Commands
- Tutorials
  - Deploy a Replica Set
  - Convert a Standalone to a Replica Set
  - Add Members to a Replica Set
  - Deploy a Geographically Distributed Replica Set
  - Change the Size of the Oplog
  - Force a Member to Become Primary
  - Change Hostnames in a Replica Set
  - Convert a Secondary to an Arbiter
  - Reconfigure a Replica Set with Unavailable Members
  - Recover MongoDB Data following Unexpected Shutdown
- Reference
Sharding
Administration
Security
Indexes
Aggregation
Application Development
Using the MongoDB Shell
Use Cases
Frequently Asked Questions
Reference

Index

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Tutorials
Frequently Asked Questions
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