With the advent of user-defined networks, users are able to define custom network types for their containers. Once defined, these networks persist through system reboots until they are deleted by an administrator. In order for this persistence to work, Docker needs some place to store information related to your user-defined networks. The answer is a database file that's local to the host. In some rare cases, this database can get out of sync with the current state of the containers on the host or become corrupt. This can cause issues related to deleting containers, deleting networks, and starting the Docker service. In this recipe, we'll show you how to remove the database to restore Docker back to its default network configuration.
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