Secrets are used to work with confidential data in a secure way. Swarm secrets are secure at rest and in transit. That is, when a new secret is created on a manager node, and it can only be created on a manager node, its value is encrypted and stored in the raft consensus storage. This is why it is secure at rest. If a service gets a secret assigned to it, then the manager reads the secret from storage, decrypts it, and forwards it to all the containers who are instances of the swarm service that requested the secret. Since node-to-node communication in Docker Swarm uses mutual transport layer security (TLS), the secret value, although decrypted, is still secure in transit. The manager forwards the secret only to the worker nodes that a service instance is running on. Secrets are then mounted as files into the target container...
Learn Docker - Fundamentals of Docker 19.x - Second Edition
By :
Learn Docker - Fundamentals of Docker 19.x - Second Edition
By:
Overview of this book
Containers enable you to package an application with all the components it needs, such as libraries and other dependencies, and ship it as one package. Docker containers have revolutionized the software supply chain in both small and large enterprises.
Starting with an introduction to Docker fundamentals and setting up an environment to work with it, you’ll delve into concepts such as Docker containers, Docker images, and Docker Compose. As you progress, the book will help you explore deployment, orchestration, networking, and security. Finally, you’ll get to grips with Docker functionalities on public clouds such as Amazon Web Services (AWS), Azure, and Google Cloud Platform (GCP), and learn about Docker Enterprise Edition features. Additionally, you’ll also discover the benefits of increased security with the use of containers.
By the end of this Docker book, you’ll be able to build, ship, and run a containerized, highly distributed application on Docker Swarm or Kubernetes, running on-premises or in the cloud.
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Current Title:
Learn Docker - Fundamentals of Docker 19.x - Second Edition
Table of Contents (25 chapters)
Preface
Section 1: Motivation and Getting Started
Free Chapter
What Are Containers and Why Should I Use Them?
Setting Up a Working Environment
Section 2: Containerization, from Beginner to Black Belt
Mastering Containers
Creating and Managing Container Images
Data Volumes and Configuration
Debugging Code Running in Containers
Using Docker to Supercharge Automation
Advanced Docker Usage Scenarios
Section 3: Orchestration Fundamentals and Docker Swarm
Distributed Application Architecture
Single-Host Networking
Docker Compose
Orchestrators
Introduction to Docker Swarm
Zero-Downtime Deployments and Secrets
Section 4: Docker, Kubernetes, and the Cloud
Introduction to Kubernetes
Deploying, Updating, and Securing an Application with Kubernetes
Monitoring and Troubleshooting an App Running in Production
Running a Containerized App in the Cloud
Assessments
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Customer Reviews