I’ve made a point in earlier chapters to point out that Docker does a lot of things for you in the network space. As we’ve already seen, having Docker manage IP allocations through IPAM is a huge benefit that’s not inherently obvious when you start using Docker. Another thing that Docker provides for you is DNS resolution. As we’ll see in this chapter, there are multiple levels of name and service resolution that Docker can provide. As Docker has matured, so have the options to provide these types of services. In this chapter, we’ll start to review basic name resolution and how a container knows which DNS server to use. We’ll then cover container linking and see how Docker can tell containers about other containers and the services they host. Finally, we’ll walk through some of the DNS enhancements that came along with the addition of user-defined networks.
Docker Networking Cookbook
Docker Networking Cookbook
Overview of this book
Networking functionality in Docker has changed considerably since its first release, evolving to offer a rich set of built-in networking features, as well as an extensible plugin model allowing for a wide variety of networking functionality. This book explores Docker networking capabilities from end to end. Begin by examining the building blocks used by Docker to implement fundamental containing networking before learning how to consume built-in networking constructs as well as custom networks you create on your own. Next, explore common third-party networking plugins, including detailed information on how these plugins inter-operate with the Docker engine. Consider available options for securing container networks, as well as a process for troubleshooting container connectivity.
Finally, examine advanced Docker networking functions and their relevant use cases, tying together everything you need to succeed with your own projects.
Table of Contents (18 chapters)
Docker Networking Cookbook
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Free Chapter
Linux Networking Constructs
Configuring and Monitoring Docker Networks
User-Defined Networks
Building Docker Networks
Container Linking and Docker DNS
Securing Container Networks
Working with Weave Net
Working with Flannel
Exploring Network Features
Leveraging IPv6
Troubleshooting Docker Networks
Index
Customer Reviews