Software Stack

ZeroMQ

ZeroMQ (also known as ØMQ, 0MQ, or zmq) looks like an embeddable networking library but acts like a concurrency framework. It gives you sockets that carry atomic messages across various transports like in-process, inter-process, TCP, and multicast. You can connect sockets N-to-N with patterns like fan-out, pub-sub, task distribution, and request-reply. It’s fast enough to be the fabric for clustered products. Its asynchronous I/O model gives you scalable multicore applications, built as asynchronous message-processing tasks. It has a score of language APIs and runs on most operating systems.

Installing zmq

We can install zmq in two ways on any linux distribution

1. Using linux package managers
   • For Debian based systems the default package managers are : apt, apt-get
   • For Red Hat based systems the default package managers are : yum, dnf
   • Just use the command sudo dnf install zeromq-devel for Red-Hat based systems.
   • Just use the command sudo apt install zeromq3-devel for debian based systems.
2. Building from source (my recommended way)

First install the necessary dependencies

$ sudo apt-get update

$ sudo apt-get install -y git build-essential

$ sudo apt-get install -y libtool pkg-config

$ sudo apt-get install -y autotools-dev autoconf automake cmake

$ sudo apt-get install -y uuid-dev libpcre3-dev

$ sudo apt-get install -y libsodium-dev valgrind

Build libzmq from source

$ git clone git://github.com/zeromq/libzmq.git

$ cd libzmq

$ ./autogen.sh

$ ./configure

$ make check

$ sudo make install

$ sudo ldconfig

$ cd ..

CZMQ

High-level C binding for ØMQ

Note that libzmq is a dependency of czmq.

$ git clone git://github.com/zeromq/czmq.git

$ cd czmq

$ ./autogen.sh

$ ./configure

$ make check

$ sudo make install

$ sudo ldconfig

$ cd ..

RabbitMQ

RabbitMQ is an open-source message-broker software that originally implemented the Advanced Message Queuing Protocol and has since been extended with a plug-in architecture to support Streaming Text Oriented Messaging Protocol, Message Queuing Telemetry Transport, and other protocols.

#1 Add RabbitMQ Repository to Ubuntu

$ wget -O- https://dl.bintray.com/rabbitmq/Keys/rabbitmq-release-signing-key.asc | sudo apt-key add -

$ wget -O- https://www.rabbitmq.com/rabbitmq-release-signing-key.asc | sudo apt-key add -

$ echo "deb https://dl.bintray.com/rabbitmq/debian $(lsb_release -sc) main" | sudo tee /etc/apt/sources.list.d/rabbitmq.list

#2 Installing RabbitMQ server on Ubuntu

$ sudo apt-get update

$ sudo apt -y install rabbitmq-server

#3 Control and Manage Services

$ sudo systemctl status  rabbitmq-server.service 

You can confirm if the service is configured to start on boot using the command:

$  systemctl is-enabled rabbitmq-server.service 

If it returns disabled, enable it by running:

$ sudo systemctl enable rabbitmq-server

#4 Enable the RabbitMQ Management Dashboard

$ sudo rabbitmq-plugins enable rabbitmq_management

The Web service should be listening on TCP port 15672

# ss -tunelp | grep 15672

$ sudo ufw allow proto tcp from any to any port 5672,15672

RabbitMQ dashboard will be running on https://localhost:15672 on your system.