book

Docker in Practice, Second Edition

by Ian Miell, Aidan Sayers

April 2019

Intermediate to advanced

384 pages

17h 6m

English

Manning Publications

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1.1. The what and why of Docker1.2. Building a Docker applicationSummary

2.1. Docker’s architecture2.2. The Docker daemon2.3. The Docker client2.4. Docker registries2.5. The Docker HubSummary
3.1. From VM to container3.2. Saving and restoring your work3.3. Environments as processesSummary
4.1. Building imagesSummary
5.1. Running containers5.2. Volumes—a persistent problemSummary
6.1. Staying ship-shapeSummary
7.1. Configuration management and Dockerfiles7.2. Traditional configuration management tools with Docker7.3. Small is beautifulSummary
8.1. Docker Hub automated builds8.2. More efficient builds8.3. Containerizing your CI processSummary
9.1. Interacting with other teams in the CD pipeline9.2. Facilitating deployment of Docker images9.3. Configuring your images for environments9.4. Upgrading running containersSummary
10.1. Container communication: Beyond manual linking10.2. Using Docker to simulate real-world networking10.3. Docker and virtual networksSummary
11.1. Simple single-host Docker11.2. Manual multi-host Docker11.3. Service discovery: What have we here?Summary
12.1. Multi-host DockerSummary
13.1. Organizational choice factors13.2. Areas to consider when adopting Docker13.3. Vendors, organizations, and productsSummary
14.1. Docker access and what it means14.2. Security measures in Docker14.3. Securing access to Docker14.4. Security from outside DockerSummary
15.1. Monitoring15.2. Resource control15.3. Sysadmin use cases for DockerSummary
16.1. Performance: You can’t ignore the tin16.2. When containers leak—debugging DockerSummary

Content preview from Docker in Practice, Second Edition

Chapter 16. Docker in production: Dealing with challenges

This chapter covers

Bypassing Docker’s namespace functionality and using the host’s resources directly
Making sure your host OS doesn’t kill processes in containers due to low memory
Debugging a container’s network directly, using your host’s tooling
Tracing system calls to determine why a container isn’t working on your host

In this chapter we’ll discuss what you can do when Docker’s abstractions aren’t working for you. These topics necessarily involve getting under the hood of Docker to understand why such solutions can be needed, and in the process we aim to provide you with a deeper awareness of what can go wrong when using Docker and how to go about fixing ...