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

Initializing a new replica set


In this recipe, we will be setting up the first node of a three node replica set on a single server. In a production setup, this should be on three physically separate servers.

Getting ready

By now, I am assuming you are familiar with installing MongoDB and have it ready. Additionally, we will create individual directories for each MongoDB instance:

mkdir -p /data/server{1,2,3}/{conf,logs,db}

This should create three parent directories: /data/server1, /data/server2, and /data/server3, each containing subdirectories named conf, logs, and db. We will be using this directory format throughout the chapter.

How to do it...

  1. Start the first node in the replica set:
mongod --dbpath /data/server1/db --replSet MyReplicaSet
  1. Open a new Terminal window, connect to the replica set node using the MongoDB shell, and check the replica set's status:
rs.status()
{
  "info" : "run rs.initiate(...) if not yet done for the set",
  "ok" : 0,
  "errmsg" : "no replset config has been received...