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

Adding a node to the replica set


In this recipe, we will be looking at how to add a node to an existing replica set.

Getting ready

Ensure that you have a single node replica set running as mentioned in the first recipe of this chapter.

How to do it...

  1. Assuming you have the node from the previous recipe already running, open a new Terminal and start a new replica set node:
mongod --dbpath /data/server2/db --replSet MyReplicaSet --port 27018
  1. In another Terminal window, connect to the primary server using mongo shell (replace the IP with that of your server's):
mongo mongodb://192.168.200.200:27017
  1. Check the number of members in the replica set:
rs.status()['members']
 [
 {
 "_id" : 0,
 "name" : "vagrant-ubuntu-trusty-64:27017",
 "health" : 1,
 "state" : 1,
 "stateStr" : "PRIMARY",
 "uptime" : 36,
 "optime" : {
 "ts" : Timestamp(1503664489, 1),
 "t" : NumberLong(3)
 },
 "optimeDate" : ISODate("2017-08-25T12:34:49Z"),
 "infoMessage" : "could not find member to sync from",
 "electionTime" : Timestamp...