Book Image

MongoDB Fundamentals

By : Amit Phaltankar, Juned Ahsan, Michael Harrison, Liviu Nedov
Book Image

MongoDB Fundamentals

By: Amit Phaltankar, Juned Ahsan, Michael Harrison, Liviu Nedov

Overview of this book

MongoDB is one of the most popular database technologies for handling large collections of data. This book will help MongoDB beginners develop the knowledge and skills to create databases and process data efficiently. Unlike other MongoDB books, MongoDB Fundamentals dives into cloud computing from the very start – showing you how to get started with Atlas in the first chapter. You will discover how to modify existing data, add new data into a database, and handle complex queries by creating aggregation pipelines. As you progress, you'll learn about the MongoDB replication architecture and configure a simple cluster. You will also get to grips with user authentication, as well as techniques for backing up and restoring data. Finally, you'll perform data visualization using MongoDB Charts. You will work on realistic projects that are presented as bitesize exercises and activities, allowing you to challenge yourself in an enjoyable and attainable way. Many of these mini-projects are based around a movie database case study, while the last chapter acts as a final project where you will use MongoDB to solve a real-world problem based on a bike-sharing app. By the end of this book, you'll have the skills and confidence to process large volumes of data and tackle your own projects using MongoDB.
Table of Contents (15 chapters)
Preface

10. Replication

Activity 10.01: Testing a Disaster Recovery Procedure for a MongoDB Database

Solution:

Perform the following steps to complete the activity:

  1. Create the directories as follows: C:\sale\sale-prod, C:\sale\sale-dr, C:\sale\sale-ab, and C:\sale\log.

    Note

    For Linux and macOS, the directory names would be like /data/sales/sale-prod, /data/sales/sale-dr…

  2. Start the cluster nodes as follows:
    start mongod --port 27001 --bind_ip_all --replSet sale-cluster --dbpath C:\sale\sale-prod --logpath C:\sale\log\sale-prod.log --logappend --oplogSize 50
    start mongod --port 27002 --bind_ip_all --replSet sale-cluster --dbpath C:\sale\sale-dr --logpath C:\sale\log\sale-dr.log --logappend --oplogSize 50
    start mongod --port 27003 --bind_ip_all --replSet sale-cluster --dbpath C:\sale\sale-ab --logpath C:\sale\log\sale-ab.log --logappend --oplogSize 50
  3. Connect with mongo shell:
     mongo mongodb://localhost:27001/?replicaSet=sale-cluster
  4. Create and activate the cluster...