Book Image

Docker Quick Start Guide

By : Earl Waud
Book Image

Docker Quick Start Guide

By: Earl Waud

Overview of this book

Docker is an open source software platform that helps you with creating, deploying, and running your applications using containers. This book is your ideal introduction to Docker and containerization. You will learn how to set up a Docker development environment on a Linux, Mac, or Windows workstation, and learn your way around all the commands to run and manage your Docker images and containers. You will explore the Dockerfile and learn how to build your own enterprise-grade Docker images. Then you will learn about Docker networks, Docker swarm, and Docker volumes, and how to use these features with Docker stacks in order to define, deploy, and maintain highly-scalable, fault-tolerant multi-container applications. Finally, you will learn how to leverage Docker with Jenkins to automate the building of Docker images and the deployment of Docker containers. By the end of this book, you will be well prepared when it comes to using Docker for your next project.
Table of Contents (10 chapters)

Swarm services

Alright. Now you know a lot about setting up a Docker swarm cluster, and how its nodes go from single-engine mode into swarm mode. You also know that the significance of that is to free you from directly managing individual running containers. So, you may be starting to wonder, if I don't manage my containers directly and individually now, how do I manage them? You've come to the right place! This is where swarm services come into play. swarm services allow you to define the desired state for your container application in terms of how many concurrent running copies of the container there should be. Let's take a quick look at what commands are available to us in the management group for swarm services, and then we'll talk about those commands:

The first thing that you'll probably want to do is create a new service, so we will begin our swarm...