Book Image

MongoDB Administrator???s Guide

By : Cyrus Dasadia
Book Image

MongoDB Administrator???s Guide

By: Cyrus Dasadia

Overview of this book

MongoDB is a high-performance and feature-rich NoSQL database that forms the backbone of the systems that power many different organizations. Packed with many features that have become essential for many different types of software professional and incredibly easy to use, this cookbook contains more than 100 recipes to address the everyday challenges of working with MongoDB. Starting with database configuration, you will understand the indexing aspects of MongoDB. The book also includes practical recipes on how you can optimize your database query performance, perform diagnostics, and query debugging. You will also learn how to implement the core administration tasks required for high-availability and scalability, achieved through replica sets and sharding, respectively. You will also implement server security concepts such as authentication, user management, role-based access models, and TLS configuration. You will also learn how to back up and recover your database efficiently and monitor server performance. By the end of this book, you will have all the information you need—along with tips, tricks, and best practices—to implement a high-performance MongoDB solution.
Table of Contents (17 chapters)
Title Page
Credits
About the Author
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface

Restoring a MongoDB sharded cluster from backup


In this recipe, we will be looking at how to restore a sharded cluster from a previously generated backup.

Getting ready

You will need a sharded cluster, with a minimum of a config server replica set (CSRS) and one shard. Refer to the Setting up and configuring a sharded cluster recipe in Chapter 5, High Scalability with Sharding, on how to create a sharded cluster.

Additionally, we will also need a previously generated backup from a sharded cluster; you can refer to the Creating a backup of a sharded cluster recipe in Chapter 6, Managing MogoDB Backups.

How to do it...

  1. Shut down the mongos server.
  2. Restore the shards one by one:
mongorestore -h 192.168.200.200 -p 27027 --drop --dir /backups/shard1bkp/
  1. Shut down the shards.
  2. Restore the config server:
mongorestore -h 192.168.200.200 -p 27019 --drop --dir /backups/configbkp/
  1. Start the shards and the mongos servers.

How it works...

We begin by initializing the shard cluster, wherein first we ensure that the...