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Mastering RabbitMQ
Mastering RabbitMQ

Mastering RabbitMQ: Master the art of developing message-based applications with RabbitMQ

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eBook Jan 2016 286 pages 1st Edition
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Profile Icon Ayanoglu Profile Icon Yusuf Aytas Profile Icon Nahum
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Full star icon Half star icon Empty star icon Empty star icon Empty star icon 1.3 (4 Ratings)
eBook Jan 2016 286 pages 1st Edition
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Mastering RabbitMQ

Chapter 2. Configuring RabbitMQ

Configuration is one of the crucial parts for administrating RabbitMQ. With an excellent configuration, RabbitMQ can send and receive messages effectively between applications, processes, and threads.

There are three ways to configure RabbitMQ. The first way is to use the RabbitMQ environment variables that lie on the environment variables of the operating system, the second way is through the configuration file provided by RabbitMQ, and the last way is to use runtime parameters. This configuration diversity gives full control of RabbitMQ on server side and operating system side.

This chapter covers the overall idea behind the configuration of RabbitMQ and three ways to configure it. So, we'll cover the following points:

  • The overall configuration of RabbitMQ
  • The RabbitMQ environment variables
  • The configuration file
  • The runtime parameters

Overall configuration of RabbitMQ

RabbitMQ's configuration is quite important to ensure the performance, high availability, and scalability within the installed operating system. In order to utilize RabbitMQ, we have three configuration ways:

  • Environment variables: These are specified in the networking parameters and file locations
  • Configuration file: This expresses the server component settings for permissions, limits, plugins, and clusters
  • Runtime parameters: These define the cluster settings that would change at run time

Before diving into each configuration type, we should check whether the configuration file exists or not. In Unix-based systems, you can find the configuration file in the following folder:

/etc/rabbitmq/rabbitmq.config

In Windows, you can find the configuration file in the following folder:

C:\Program Files (x86)\RabbitMQ_Server\etc\rabbitmq.config

After checking the configuration file, we are now ready to talk about configuration types one by one.

The RabbitMQ environment variables

RabbitMQ environment variables is one of the configuration ways of RabbitMQ. Every operating system has its own set of environment variables for each user. Although operating systems has the ability to have environment variables, the way in which environment variables are changed is slightly different across operating systems.

In Unix-based operating systems, we can change the environment variables rather easily using the rabbitmq-env.conf file. In the environment configuration file, we can add the environment parameters as follows:

CONFIG_FILE=/etc/rabbitmq/testfile

After changing the rabbitmq-env.conf file, we have to restart the RabbitMQ server to reload the environment variables.

In Windows, we should use the environment variables of the System Properties for modifying the environment variables of RabbitMQ. We can access to the Environment Variables by navigating to Settings | Control Panel | System Properties | Advanced | Environment Variables, where...

The configuration file

The RabbitMQ environment variables mostly gives the control of location of files and directories, whereas the RabbitMQ configuration file gives the control of the engine, such as authentication, performance, memory limit, disc limit, exchanges, queues, bindings, and so on. The configuration file is by default located in /etc/rabbitmq/rabbitmq.config for Unix-based computers and $RABBITMQ_SERVER\etc\rabbitmq.config for Windows-based computers, as discussed in the previous sections.

RabbitMQ has many configuration variables; however, we will discuss the most important ones here:

  • auth_mechanisms: This is used to supports different types of authentication mechanisms. You can change the different type of authentication mechanism using this variable.
  • default_user: This is used as a default user to access the RabbitMQ server using the RabbitMQ client. The default_user variable simply defines the username of the default user.
  • default_pass: This is similar to the default_user...

Runtime parameters

RabbitMQ provides environment variables and configuration variables to configure RabbitMQ when starting the RabbitMQ server. In addition to these configurations, RabbitMQ allows us to change parameters, which were set in the environment variables and configuration variables in the runtime using the runtime parameters.

We can use the command-line tool for managing the RabbitMQ broker for changing the runtime parameters, as shown in the following screenshot:

Runtime parameters

Image 2: Command Line Tool for Managing a RabbitMQ broker

Parameter management

Parameter management is a way to configure RabbitMQ by setting the parameter values. We are able to change parameters using the set_parameter command of rabbitmqctl. Moreover, we can change the different types of components of RabbitMQ with the given component_name attribute. The following tables shows the parameters and description of the runtime parameters:

Parameter

Description

set_parameter [-p vhostpath] {component_name} {name} {value...

Summary

Configuration is an important part of administrating RabbitMQ. We can achieve a decent configuration over RabbitMQ using its different configuration types to different parts of RabbitMQ. We can control the file locations and network configuration using environment variables; express the server settings, authentication, permissions, and limits through configuration variables in configuration file of RabbitMQ; and finally, we can change these parameters at the runtime using runtime parameters.

Now, we have completed the configuration part of RabbitMQ. We are ready to dive into the technical and architectural structure of RabbitMQ in the next chapter.

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Key benefits

  • Learn how to administer, manage, and extend your own message broker, RabbitMQ
  • Develop clients to make a message bridge between your software systems using RabbitMQ
  • Discover how to achieve proficiency with RabbitMQ with the well-defined descriptions of the topics

Description

RabbitMQ is one of the most powerful Open Source message broker software, which is widely used in tech companies such as Mozilla, VMware, Google, AT&T, and so on. RabbitMQ gives you lots of fantastic and easy-to-manage functionalities to control and manage the messaging facility with lots of community support. As scalability is one of our major modern problems, messaging with RabbitMQ is the main part of the solution to this problem This book explains and demonstrates the RabbitMQ server in a detailed way. It provides you with lots of real-world examples and advanced solutions to tackle the scalability issues. You’ll begin your journey with the installation and configuration of the RabbitMQ server, while also being given specific details pertaining to the subject. Next, you’ll study the major problems that our server faces, including scalability and high availability, and try to get the solutions for both of these issues by using the RabbitMQ mechanisms. Following on from this, you’ll get to design and develop your own plugins using the Erlang language and RabbitMQ’s internal API. This knowledge will help you to start with the management and monitoring of the messages, tools, and applications. You’ll also gain an understanding of the security and integrity of the messaging facilities that RabbitMQ provides. In the last few chapters, you will build and keep track of your clients (senders and receivers) using Java, Python, and C#.

Who is this book for?

If you are an intermediate-level RabbitMQ developer, who wants to achieve professional-level expertise in the subject, this book is for you. You’ll also need to have a decent understanding of message queuing.

What you will learn

  • Administer RabbitMQ using different tools
  • Understand the roots and details of messaging, message brokers, and AMQP protocol
  • Scale the RabbitMQ server using the clusters and high availability techniques
  • Extend RabbitMQ by developing the Erlang OTP-based applications that use the RabbitMQ API
  • Manage the RabbitMQ server using its powerful tools
  • Monitor the RabbitMQ Server using different open source tools such as Nagios, Munin, and Zabbix
  • Ensure your RabbitMQ's security using SSL, SASL, and access control
  • Develop RabbitMQ clients using Java, Python, and C# with an industry example

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Length: 286 pages
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Publication date : Jan 06, 2016
Length: 286 pages
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Language : English
ISBN-13 : 9781783981533
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Table of Contents

12 Chapters
1. Getting Started Chevron down icon Chevron up icon
2. Configuring RabbitMQ Chevron down icon Chevron up icon
3. Architecture and Messaging Chevron down icon Chevron up icon
4. Clustering and High Availability Chevron down icon Chevron up icon
5. Plugins and Plugin Development Chevron down icon Chevron up icon
6. Managing Your RabbitMQ Server Chevron down icon Chevron up icon
7. Monitoring Chevron down icon Chevron up icon
8. Security in RabbitMQ Chevron down icon Chevron up icon
9. Java RabbitMQ Client Programming Chevron down icon Chevron up icon
10. Ruby Client Programming Chevron down icon Chevron up icon
11. Python Client Programming Chevron down icon Chevron up icon
Index Chevron down icon Chevron up icon

Customer reviews

Rating distribution
Full star icon Half star icon Empty star icon Empty star icon Empty star icon 1.3
(4 Ratings)
5 star 0%
4 star 0%
3 star 0%
2 star 25%
1 star 75%
JW Mar 10, 2017
Full star icon Full star icon Empty star icon Empty star icon Empty star icon 2
Pros:1. Plentiful & good diagrams2. Starts with a good overview/non-code approachCons;1. Highly repetitive2. Did not find any code samples associated with the book at the publisher website3. Code samples are at the end of the book; not integrated within each chapter as you go along.
Amazon Verified review Amazon
Brandon Green Feb 14, 2017
Full star icon Empty star icon Empty star icon Empty star icon Empty star icon 1
Poorly written, lots of filler like screenshots of installer dialogs and repetitive console text dumps. Largely just recycles information available online.
Amazon Verified review Amazon
pradeep Jun 29, 2016
Full star icon Empty star icon Empty star icon Empty star icon Empty star icon 1
This book has spelling mistakes on almost every page, the language in general is beyond horrible and repetitive, never imagined any publisher can approve a book like this.Very little content : Mostly screenshots, tables of options supported by commands - all of this content can be read directly in RabbitMQ introduction web pageTries to touch every topic without covering anythingLooks like this book was written over couple of weekends!If you want a good book on Rabbit MQ try the one written by Rabbit author itself :RabbitMQ in Action by Alvaro Videla
Amazon Verified review Amazon
Nicus Jan 29, 2016
Full star icon Empty star icon Empty star icon Empty star icon Empty star icon 1
One of the worst technical book ever.The description says it it targeted to intermediate-level RabbitMQ developers, but it actually starts from Adam-and-Eve, not getting into any advanced subject.It wastes pages for transcripts of CLI command responses.Endless lists of command line parameters without any actual explanation beyond what you may find in the normal references.Pages of boilerplate code examples were only a couple of lines are relevant, and no comment for these two lines...It could be easily concentrated in 20 pages.Also, after all these pages, it fails in the goal of explaining how RabbitMQ topology works and the different behaviour of exchange types.
Amazon Verified review Amazon
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