Tag Archives: HAProxy

Integrating Proxy With Docker Swarm (Tour Around Docker 1.12 Series)

Docker Swarm

This article continues where Docker Swarm Introduction left. I will assume that you have at least a basic knowledge how Swarm in Docker v1.12+ works. If you don’t, please read the previous article first.

The fact that we can deploy any number of services inside a Swarm cluster does not mean that they are accessible to our users. We already saw that the new Swarm networking made it easy for services to communicate with each other.

Let’s explore how we can utilize it to expose them to the public. We’ll try to integrate a proxy with the Swarm network and further explore benefits version v1.12 brought.
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Docker Flow – Walkthrough

Docker Flow is a project aimed towards creating an easy to use continuous deployment flow. It depends on Docker Engine, Docker Compose, Consul, and Registrator. Each of those tools is proven to bring value and are recommended for any Docker deployment.

The goal of the project is to add features and processes that are currently missing inside the Docker ecosystem. The project, at the moment, solves the problems of blue-green deployments, relative scaling, and proxy service discovery and reconfiguration. Many additional features will be added soon.

The current list of features is as follows.

Docker Flow: Proxy – On-Demand HAProxy Service Discovery and Reconfiguration

A lot changed since I published that article. The Swarm as a standalone container is deprecated in favor of Swarm Mode bundled inside Docker Engine 1.12+. On the other hand, the Docker Flow: Proxy advanced and became more feature rich and advanced. I suggest you check out the project README instead this article.

The goal of the Docker Flow: Proxy project is to provide a simple way to reconfigure proxy every time a new service is deployed or when a service is scaled. It does not try to “reinvent the wheel”, but to leverage the existing leaders and combine them through an easy to use integration. It uses HAProxy as a proxy and Consul as service registry. On top of those two, it adds custom logic that allows on-demand reconfiguration of the proxy.
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The DevOps 2.0 Toolkit

Today is an exciting day for me. I just decided that the book I spent the last eight months writing is ready for general public.

What made me write the book? Certainly not the promise of wealth since, as any author of technical books will confirm, there is no money that can compensate the number of hours involved in writing a technical book. The reasons behind this endeavor are of a different nature. I realized that this blog is a great way for me to explore different subjects and share my experience with the community. However, due to the format, blog posts do not give enough space to explore, in more details, subjects I’m passionate about so, around eight months ago, I decided to start working on The DevOps 2.0 Toolkit: Automating the Continuous Deployment Pipeline with Containerized Microservices book. It treats similar subjects as those I write about in this blog, but with much more details. More importantly, the book allowed me to organize my experience into a much more coherent story.

The book is about different techniques that help us architect software in a better and more efficient way with microservices packed as immutable containers, tested and deployed continuously to servers that are automatically provisioned with configuration management tools. It’s about fast, reliable and continuous deployments with zero-downtime and ability to roll-back. It’s about scaling to any number of servers, designing self-healing systems capable of recuperation from both hardware and software failures and about centralized logging and monitoring of the cluster.

In other words, this book envelops the whole microservices development and deployment lifecycle using some of the latest and greatest practices and tools. We’ll use Docker, Kubernetes, Ansible, Ubuntu, Docker Swarm and Docker Compose, Consul, etcd, Registrator, confd, Jenkins, and so on. We’ll go through many practices and, even more, tools.

At this moment, around 70% is finished and you’ll receive regular updates if you decide to purchase the book. The truth is that my motivation for writing the book is the same as with this blog. I like sharing my experience and this book is one more way to accomplish that. You can set your own price and if you feel that the minimum amount is still too high, please send me a private message and I’ll get back to you with a free copy.

Please give The DevOps 2.0 Toolkit: Automating the Continuous Deployment Pipeline with Containerized Microservices a try and let me know what you think. Any feedback is welcome and appreciated.

Microservices: The Essential Practices

Before we jump and try to explore the practices we must master in order to successfully implement microservices architecture, let us briefly refresh our understanding of monolithic applications.
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