Docker Containers (includes Content Update Program) by Negus, Christopher -- Read -- Imperial Library of Trantor

Index

About This E-Book Title Page Copyright Page Dedication Page Contents Preface

Knowledge to Help You with Docker What This Book Covers

Part I: Getting Going with Containers Part II: Working with Individual Containers Part III: Running Containers in Cloud Environments Part IV: Managing Multiple Containers Part V: Developing Containers

Acknowledgments About the Author Part I: Getting Going with Containers

Chapter 1. Containerizing Applications with Docker

Understanding Pros and Cons of Containerizing Applications

...An Application Running Directly on a Host Computer ...An Application Running Directly within a Virtual Machine Understanding the Upside of Containers Understanding Challenges of Containerizing Applications

Understanding What Makes Up Docker

The Docker Project The Docker Hub Registry Docker Images and Containers The docker Command

Approaching Containers Summary

Chapter 2. Setting Up a Container Run-Time Environment

Configuring a Standard Linux System for Docker

Configuring Ubuntu for Docker Configuring Fedora for Docker Configuring Red Hat Enterprise Linux for Docker Configuring Other Operating Systems for Docker

Configuring a Container-Style Linux System for Docker

Configuring an Atomic Host for Docker Configuring CoreOS for Docker

Summary

Chapter 3. Setting Up a Private Docker Registry

Getting and Starting a Private Docker Registry

Setting Up a Docker Registry in Fedora Setting Up a Docker Registry in Ubuntu

Configuring a Private Docker Registry

Configuring the docker-registry Package Configuring the registry Container

Understanding the Docker Image Namespace Summary

Part II: Working with Individual Containers

Chapter 4. Running Container Images

Running Container Images Interactively

Starting an Interactive Bash Shell Playing Some Character-Based Games Running Administrative Commands Inside a Container

Running Containerized Services

Running a Containerized Web Server Limiting Resources When Running Services in Containers

Running Privileged Containers Summary

Chapter 5. Finding, Pulling, Saving, and Loading Container Images

Searching for Images

Searching for Images with the docker Command Searching for Images on Docker Hub Searching Other Repositories for Images

Pulling Images from Registries Saving and Loading Images Summary

Chapter 6. Tagging Images

Assigning Names to Images Assigning Tags to Images Assigning Repository Names to Images

Attaching a User Name to an Image Attaching a Repository Name to an Image

Summary

Chapter 7. Investigating Containers

Inspecting Images and Containers Inspecting an Image

Inspecting Base Images with docker inspect Inspecting Application Images with docker inspect Looking at the History of an Image

Inspecting Running Containers

Start a Container to Inspect Inspect an Entire Container Configuration Inspect Individual Container Attributes

Finding More Ways to Look into Containers

Using docker top to See Container Processes Using docker attach to Interact with a Service Inside a Container Using docker exec to Start a New Process in a Running Container Using docker logs to See Container Process Output Using docker diff to See How a Container Has Changed Using docker cp to Copy Files from a Container

Summary

Chapter 8. Starting, Stopping, and Restarting Containers

Stopping and Starting a Container

Stopping and Starting a Detached Container Starting and Stopping an Interactive Container

Restarting a Container Sending Signals to a Container Pausing and Unpausing Containers Waiting for a Container’s Exit Code Renaming a Container Creating a Container Summary

Chapter 9. Configuring Container Storage

Managing Storage for a Container

Using Volumes from the Host Data Volume Container Write-Protecting a Bind Mount Mounting Devices Mounting Sockets

Storage Strategies for the Docker Host

Attaching External Storage to a Docker Host

Summary

Chapter 10. Configuring Container Networking

Expose Ports to Other Containers Map Ports Outside the Host

Map a Port from Linked Containers Connect Containers on Different Hosts

Alternatives to the docker0 Bridge

Changing Network Mode for a Container Examining Network Options

Changing the Docker Network Bridge Summary

Chapter 11. Cleaning Up Containers

Making Space for Images and Containers Removing Images

Removing Individual Images Removing Multiple Images

Removing Containers

Removing Individual Containers Removing Multiple Containers

Cleaning Up and Saving Containers

Cleaning Up and Saving an Ubuntu Container Cleaning Up and Saving a Fedora Container

Summary

Chapter 12. Building Docker Images

Doing a Simple docker build Setting a Command to Execute from a Dockerfile

Using the CMD Instruction Using the ENTRYPOINT Instruction Using the RUN Instruction Adding Files to an Image from a Dockerfile

Exposing Ports from an Image within a Dockerfile Assigning Environment Variables in a Dockerfile Assigning Labels in a Dockerfile Using Other docker build Command Options Tips for Building Containers

Clean Up the Image Keep Build Directory Small Keep Containers Simple Manage How Caching Is Done

Summary

Part III: Running Containers in Cloud Environments

Chapter 13. Using Super Privileged Containers

Using Super Privileged Containers in Atomic Host Understanding Super Privileged Containers

Opening Privileges to the Host Accessing the Host Process Table Accessing Host Network Interfaces Accessing Host Inter-Process Communications Accessing Host File Systems

Preparing to Use Super Privileged Containers Using the atomic Command

Installing an SPC Image with atomic Getting Information about an SPC Image with atomic Running an SPC Image with atomic Stopping and Restarting an SPC with atomic Updating an SPC Image Uninstalling an SPC Image

Trying Some SPCs

Running the RHEL Tools SPC Running the Logging (rsyslog) SPC Running the System Monitor (sadc) SPC

Summary

Chapter 14. Managing Containers in the Cloud with Cockpit

Understanding Cockpit Starting with Cockpit Adding Servers into Cockpit Working with Containers from Cockpit

Adding Container Images to Cockpit Running Images from Cockpit

Working with Network Interfaces from Cockpit Configuring Storage from Cockpit Doing Other Administrative Tasks in Cockpit

Managing Administrator Accounts in Cockpit Open a Terminal in Cockpit

Summary

Part IV: Managing Multiple Containers

Chapter 15. Orchestrating Containers with Kubernetes

Understanding Kubernetes Starting with Kubernetes Setting Up an All-in-One Kubernetes Configuration

Installing and Starting Up Kubernetes Starting Up a Pod in Kubernetes Working with Kubernetes

Summary

Chapter 16. Creating a Kubernetes Cluster

Understanding Advanced Kubernetes Features Setting Up a Kubernetes Cluster

Step 1: Install Linux Step 2: Set Up Kubernetes Master Step 3: Set Up Kubernetes Nodes Step 4: Set Up Networking with Flannel

Starting Up Pods in a Kubernetes Cluster Deleting Replication Controllers, Services, and Pods Summary

Part V: Developing Containers

Chapter 17. Developing Docker Containers

Setting Up for Container Development

Choosing a Container Development Environment for Red Hat Systems Container Development Environments from Docker

Using Good Development Practices

Gathering or Excluding Files for a Build Taking Advantage of Layers Managing Software Packages in a Build Learning More about Building Containers

Summary

Chapter 18. Exploring Sample Dockerfile Files

Examining Dockerfiles for Official Docker Images

Viewing a CentOS Dockerfile Viewing a Busybox Dockerfile

Examining Dockerfiles from Open Source Projects

Viewing a WordPress Dockerfile Viewing the MySQL Dockerfile

Examining Dockerfiles for Desktop and Personal Use

Viewing a Chrome Dockerfile Viewing a Firefox Dockerfile

Summary

Index Inside Front Cover Inside Back Cover Code Snippets

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