Replication

A replica set in MongoDB is a group of mongod processes that maintain the same data set. Replica sets provide redundancy and high availability, and are the basis for all production deployments. This section introduces replication in MongoDB as well as the components and architecture of replica sets. The section also provides tutorials for common tasks related to replica sets.

You can download this section in PDF form as Replication and MongoDB.

Replication Introduction

An introduction to replica sets, their behavior, operation, and use.

Replication Concepts

The core documentation of replica set operations, configurations, architectures and behaviors.

Replica Set Members

Introduces the components of replica sets.

Replica Set Deployment Architectures

Introduces architectural considerations related to replica sets deployment planning.

Replica Set High Availability

Presents the details of the automatic failover and recovery process with replica sets.

Replica Set Read and Write Semantics

Presents the semantics for targeting read and write operations to the replica set, with an awareness of location and set configuration.

Replica Set Tutorials

Tutorials for common tasks related to the use and maintenance of replica sets.

Replication Reference

Reference for functions and operations related to replica sets.

• Replication Introduction
• Replication Concepts
  • Replica Set Members
    • Replica Set Primary
    • Replica Set Secondary Members
      • Priority 0 Replica Set Members
      • Hidden Replica Set Members
      • Delayed Replica Set Members
    • Replica Set Arbiter
  • Replica Set Deployment Architectures
    • Three Member Replica Sets
    • Replica Sets with Four or More Members
    • Geographically Distributed Replica Sets
  • Replica Set High Availability
    • Replica Set Elections
    • Rollbacks During Replica Set Failover
  • Replica Set Read and Write Semantics
    • Write Concern for Replica Sets
    • Read Preference
    • Read Preference Processes
  • Replication Processes
    • Replica Set Oplog
    • Replica Set Data Synchronization
  • Master Slave Replication
• Replica Set Tutorials
  • Replica Set Deployment Tutorials
    • Deploy a Replica Set
    • Deploy a Replica Set for Testing and Development
    • Deploy a Geographically Redundant Replica Set
    • Add an Arbiter to Replica Set
    • Convert a Standalone to a Replica Set
    • Add Members to a Replica Set
    • Remove Members from Replica Set
    • Replace a Replica Set Member
  • Member Configuration Tutorials
    • Adjust Priority for Replica Set Member
    • Prevent Secondary from Becoming Primary
    • Configure a Hidden Replica Set Member
    • Configure a Delayed Replica Set Member
    • Configure Non-Voting Replica Set Member
    • Convert a Secondary to an Arbiter
  • Replica Set Maintenance Tutorials
    • Change the Size of the Oplog
    • Perform Maintenance on Replica Set Members
    • Force a Member to Become Primary
    • Resync a Member of a Replica Set
    • Configure Replica Set Tag Sets
    • Reconfigure a Replica Set with Unavailable Members
    • Manage Chained Replication
    • Change Hostnames in a Replica Set
    • Configure a Secondary’s Sync Target
  • Troubleshoot Replica Sets
• Replication Reference
  • Replica Set Configuration
  • The local Database
  • Replica Set Member States
  • Read Preference Reference

←   System Event Audit Messages Replication Introduction  →

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