Book Image

Docker on Windows

By : Elton Stoneman
Book Image

Docker on Windows

By: Elton Stoneman

Overview of this book

Docker is a platform for running server applications in lightweight units called containers. You can run Docker on Windows Server 2016 and Windows 10, and run your existing apps in containers to get significant improvements in efficiency, security, and portability. This book teaches you all you need to know about Docker on Windows, from 101 to deploying highly-available workloads in production. This book takes you on a Docker journey, starting with the key concepts and simple examples of how to run .NET Framework and .NET Core apps in Windows Docker containers. Then it moves on to more complex examples—using Docker to modernize the architecture and development of traditional ASP.NET and SQL Server apps. The examples show you how to break up monoliths into distributed apps and deploy them to a clustered environment in the cloud, using the exact same artifacts you use to run them locally. To help you move confidently to production, it then explains Docker security, and the management and support options. The book finishes with guidance on getting started with Docker in your own projects, together with some real-world case studies for Docker implementations, from small-scale on-premises apps to very large-scale apps running on Azure.
Table of Contents (20 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
Index

Deploying stacks to Docker swarm


Stacks in Docker swarm address the limitations of using Docker Compose with a single host. You create a stack from a Compose file, and Docker stores all the metadata for the stack's services in the swarm. This means Docker is aware that the set of resources represents one application, and you can manage services from any Docker client without needing the Compose file.

You can also make use of Docker secrets to make sensitive data available to service containers instead of using environment variables.

Docker secrets

Swarm mode is inherently secure--communication between all the nodes is encrypted, and the swarm provides an encrypted data store that is distributed among the manager nodes. You can use this store for application secrets, which are a first-class resource in the Docker swarm.

Secrets are created with a name and the contents of the secret, which can be read from a file or entered into the command-line. In the ch07-docker-stack folder, I have a folder...