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

Upgrading production MongoDB to a newer version


In this recipe, we will look at how to upgrade MongoDB binaries in a replica set. This recipe holds true even for config and shard servers.

Getting ready

We will assume you have a three-node MongoDB replica set.

How to do it...

  1. Before even touching a system, go through the release notes carefully. There are serious implications when upgrading binaries that have backward-incompatible changes or variance in operational parameters.
  2. Take a full backup of your entire system.
  3. If you have installed MongoDB binaries using the operating system's package manager, such as apt (Ubuntu) or yum (Red Hat/CentOS), the upgrade process might trigger a service restart. Hence, do not install new packages until the service is manually shut down.
  4. Log in to one of the secondary nodes in the replica set and shut it down:
use admin
db.shutdownServer()
  1. Once the mongod/mongos instance is shut down, install the upgraded package on the system and start the service.

 

  1. Log in to the...