Book Image

The DevOps 2.2 Toolkit

By : Viktor Farcic
Book Image

The DevOps 2.2 Toolkit

By: Viktor Farcic

Overview of this book

Building on The DevOps 2.0 Toolkit and The DevOps 2.1 Toolkit: Docker Swarm, Viktor Farcic brings his latest exploration of the Docker technology as he records his journey to explore two new programs, self-adaptive and self-healing systems within Docker. The DevOps 2.2 Toolkit: Self-Sufficient Docker Clusters is the latest book in Viktor Farcic’s series that helps you build a full DevOps Toolkit. This book in the series looks at Docker, the tool designed to make it easier in the creation and running of applications using containers. In this latest entry, Viktor combines theory with a hands-on approach to guide you through the process of creating self-adaptive and self-healing systems. Within this book, Viktor will cover a wide-range of emerging topics, including what exactly self-adaptive and self-healing systems are, how to choose a solution for metrics storage and query, the creation of cluster-wide alerts and what a successful self-sufficient system blueprint looks like. Work with Viktor and dive into the creation of self-adaptive and self-healing systems within Docker.
Table of Contents (18 chapters)

Service tasks

Service tasks are related to flows that are in charge of making sure that services are running, that correct versions are deployed, that information is propagated to all dependencies, that they are reachable, that they behave as expected, and so on. In other words, everything related to services is under this umbrella.

We'll group service related tasks into self-healing, deployment, reconfiguration, request, and self-adaptation flows.

Self-healing flow

Docker Swarm (or any other scheduler) is taking care of self-healing. As long as there's enough hardware capacity, it will make sure that the desired number of replicas of each service is (almost) always up-and-running. If a replica goes down, it&apos...