MongoDB High Availability电子书

MongoDB High Availability

Table of Contents

MongoDB High Availability

Credits

About the Author

About the Reviewers

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Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Errata

Piracy

Questions

1. Understanding the MongoDB Architecture and Processes

Utilizing MongoDB components

Understanding the core components

Understanding mongod

Utilizing mongo

Learning about mongos

Import and export tools

Using import and export tools

Understanding mongodump

Utilizing mongorestore

Learning about bsondump

Understanding mongooplog

Using data tools

Understanding mongoexport

Utilizing mongoimport

Diagnostic tools

Learning about mongostat

Utilizing mongotop

Understanding mongosniff

Utilizing mongoperf

File storage (GridFS) tools

Understanding mongofiles

Summary

2. Understanding MongoDB's Failures and Limitations

Understanding the limitation of a 32-bit version of MongoDB

The Unix limitation

Failover in replica set

Sharding the configuration server failure

Understanding database locks

Summary

3. Clustering in MongoDB

Sharding in MongoDB

Understanding replication

Learning about a replica set

Vertical and horizontal scaling

Utilizing sharding

Implementing clustering in MongoDB

Learning about shards

Understanding the configuration server

Utilizing the mongos or query router

Summary

4. Utilizing a Replica Set

The purpose of replication

Understanding replication

Understanding asynchronous replication

Architecture of replica sets

Understanding oplog

Learning about replication and oplog changes

Understanding nodes' failover

Understanding the replica set election process

Different forms of secondary members

Using the priority 0 member

Utilizing hidden members

The delayed member

Understanding the arbiter node's role

Summary

5. Replica Set in Action

Overview of replica sets

Before deploying a replica set

Configurations of a replica set

Deploying a replica set

Adding a new member

Removing a member

Adding an arbiter

Failover testing

Summary

6. Understanding the Concept of Sharding

Understanding scaling

Learning about sharding

Understanding sharding modules

Utilizing a sharding key

Understanding range-based keys

Understanding hash-based keys

Understanding the splitting and balancing processes

Summary

7. Sharding in Action

Preparing the environment

Implementing configuration servers

Configuring a mongos instance

Managing a mongos instance

Adding shards to mongos

Enable sharding

Summary

8. Analyzing and Improving Database Performance

Understanding profiling

Utilizing profiling

Enabling and configuring the profiler

Using the profiler log

Introducing other analytics methods

Introducing indexes

Using projection

Limiting the number of records returned

Reviewing the hardware considerations

Summary

9. Migrating Instances and Reducing Downtime

Understanding the migration process

Migrating a replica set in action

Explaining the migration process

Adding a new machine

Understanding replica set election problems

Removing the existing machine

Migrating a standalone mongod instance

Converting an existing instance to a replica set

Moving dbpath to the new server

Summary

10. Monitoring and Troubleshooting the Database

Understanding monitoring strategies

Utilizing the profiling feature

Utilizing the built-in reporting tools

mongotop

mongostat

Enabling the web-based console

Understanding the reporting commands

Executing a command

Utilizing the dbStats command

Utilizing the collStats command

Understanding the serverStatus command

Utilizing the replSetGetStatus command

Using database logs

Introducing web-based utilities

Utilizing the MMS monitoring service

Understanding Scout

Utilizing server density

Utilizing LogicMonitor

Introducing FusionReactor

Introducing self-hosted utilities

Summary

Index