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)

Deploying Docker Flow Monitor

Deploying Docker Flow Monitor is easy (as almost all Docker services are). We'll start by creating a network called monitor. We could let Docker stack create it for us, but it is useful to have it defined externally so that we can easily attach it to services from other stacks:

docker network create -d overlay monitor  

The stack is as follows:

version: "3" 
    image: vfarcic/docker-flow-monitor:${TAG:-latest} 
      - monitor 
      - 9090:9090 
       external: true 

The environment variable GLOBAL_SCRAPE_INTERVAL shows the first improvement over the "original" Prometheus service. It allows us to define entries of its configuration as environment variables. That, in itself, is not a significant...