Book Image

The DevOps 2.1 Toolkit: Docker Swarm

By : Viktor Farcic
Book Image

The DevOps 2.1 Toolkit: Docker Swarm

By: Viktor Farcic

Overview of this book

Viktor Farcic's latest book, The DevOps 2.1 Toolkit: Docker Swarm, takes you deeper into one of the major subjects of his international best seller, The DevOps 2.0 Toolkit, and shows you how to successfully integrate Docker Swarm into your DevOps toolset. Viktor shares with you his expert knowledge in all aspects of building, testing, deploying, and monitoring services inside Docker Swarm clusters. You'll go through all the tools required for running a cluster. You'll travel through the whole process with clusters running locally on a laptop. Once you're confident with that outcome, Viktor shows you how to translate your experience to different hosting providers like AWS, Azure, and DigitalOcean. Viktor has updated his DevOps 2.0 framework in this book to use the latest and greatest features and techniques introduced in Docker. We'll go through many practices and even more tools. While there will be a lot of theory, this is a hands-on book. You won't be able to complete it by reading it on the metro on your way to work. You'll have to read this book while in front of the computer and get your hands dirty.
Table of Contents (22 chapters)
Title Page
Credits
About the Author
www.PacktPub.com
Customer Feedback
Preface
11
Embracing Destruction: Pets versus Cattle

Creating services in production and production-like environments


Since a service is created only once and updated whenever some of its aspects change (example:new image with the new release), there is no strong incentive to add service creation to the Continuous Deployment flow. All we'd get is increased complexity without any tangible benefit. Therefore, we'll create all the services manually and, later on, discuss how to automate the flow that will be triggered with each new release.

We already created go-demo, go-demo-db, proxy, jenkins, and registry services quite a few times so we'll skip the explanation and run scripts/dm-swarm-services-2.sh (https://github.com/vfarcic/cloud-provisioning/blob/master/scripts/dm-swarm-services-2.sh) that will recreate the situation we had in the previous chapters:

scripts/dm-swarm-services-2.sh

eval $(docker-machine env swarm-1)

docker service ls

The output of the service ls command is as follows (IDs are removed for brevity):

NAME       MODE       REPLICAS...