The article that follows is an extract from the last chapter of The DevOps 2.2 Toolkit: Self-Sufficient Docker Clusters book. It provides a good summary into the processes and tools we explored in the quest to build a self-sufficient cluster that can (mostly) operate without humans.
We split the tasks that a self-sufficient system should perform into those related to services and those oriented towards infrastructure. Even though some of the tools are used in both groups, the division between the two allowed us to keep a clean separation between infrastructure and services running on top of it. Continue reading →
If you liked this article, you might be interested in The DevOps 2.2 Toolkit: Self-Sufficient Docker Clusters book. The book goes beyond Docker and schedulers and tries to explore ways for building self-adaptive and self-healing Docker clusters. If you are a Docker user and want to explore advanced techniques for creating clusters and managing services, this book might be just what you're looking for.
Please get a copy from Amazon, LeanPub, or look for it through your favorite book seller.
Give the book a try and let me know what you think.
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. Continue reading →
Docker SDN (Software Defined Network) already exists for quite some time. What is new, starting from the release 1.11, is the addition of DNS round-robin load balancing. That is both a reason for celebration and an opportunity to explore Docker networking and DNS. We'll explore internal and external networking, see how DNS fits into the picture, discuss use cases that might be a good fit, and finish with pros and cons. Continue reading →