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  • Book Overview & Buying MongoDB High Availability
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MongoDB High Availability

MongoDB High Availability

By : Mehrabani
1 (1)
Buy this Book
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MongoDB High Availability

MongoDB High Availability

1 (1)
By: Mehrabani
Buy this Book

Overview of this book

This book has a perfect balance of concepts and their practical implementation along with solutions to make a highly available MongoDB server with clear instructions and guidance. If you are using MongoDB in a production environment and need a solution to make a highly available MongoDB server, this book is ideal for you. Familiarity with MongoDB is expected so that you understand the content of this book.
Table of Contents (12 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Understanding the MongoDB Architecture and Processes
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1. Understanding the MongoDB Architecture and Processes
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Utilizing MongoDB components
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Import and export tools
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Diagnostic tools
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Summary
2
2. Understanding MongoDB's Failures and Limitations
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2. Understanding MongoDB's Failures and Limitations
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Understanding the limitation of a 32-bit version of MongoDB
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Failover in replica set
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Sharding the configuration server failure
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Understanding database locks
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Summary
3
3. Clustering in MongoDB
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3. Clustering in MongoDB
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Sharding in MongoDB
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Vertical and horizontal scaling
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Utilizing sharding
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Implementing clustering in MongoDB
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Summary
4
4. Utilizing a Replica Set
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4. Utilizing a Replica Set
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The purpose of replication
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Understanding replication
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Architecture of replica sets
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Understanding oplog
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Learning about replication and oplog changes
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Understanding the arbiter node's role
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Summary
5
5. Replica Set in Action
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5. Replica Set in Action
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Overview of replica sets
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Before deploying a replica set
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Configurations of a replica set
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Deploying a replica set
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Failover testing
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Summary
6
6. Understanding the Concept of Sharding
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6. Understanding the Concept of Sharding
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Understanding scaling
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Learning about sharding
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Summary
7
7. Sharding in Action
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7. Sharding in Action
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Preparing the environment
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Implementing configuration servers
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Configuring a mongos instance
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Managing a mongos instance
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Adding shards to mongos
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Enable sharding
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Summary
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8. Analyzing and Improving Database Performance
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8. Analyzing and Improving Database Performance
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Understanding profiling
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Introducing other analytics methods
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Introducing indexes
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Summary
9
9. Migrating Instances and Reducing Downtime
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9. Migrating Instances and Reducing Downtime
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Understanding the migration process
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Migrating a replica set in action
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Migrating a standalone mongod instance
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Summary
10
10. Monitoring and Troubleshooting the Database
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10. Monitoring and Troubleshooting the Database
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Understanding monitoring strategies
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Introducing web-based utilities
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Introducing FusionReactor
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Introducing self-hosted utilities
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Summary
11
Index
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Index

Migrating a replica set in action

For the first part of the migration, we are going to migrate a replica set. In this section, we will learn how to add a new node to the replica set and wait for the synchronization process. Then, we remove the old node and make sure that the migration has been completed successfully.

Explaining the migration process

In this scenario, we have a replica set with one primary, one secondary, and one arbiter node. The following diagram shows the replica set and its members:

Then, we will add a new node to the existing replica set and remove the current primary node.

In this part, a new secondary node synchronizes its oplog with the primary node in a background process. After completing synchronization, you can safely remove the primary node and wait for the replica set to choose the new primary node. This is the election phase.

The following diagram shows the election procedure:

The current replica set has three members. These include one primary node, one secondary...

CONTINUE READING
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