Docker Networking Cookbook

Description

60 practical recipes that help you gain expertise with Docker networking and understand the underlying constructs that make it all workAbout This Book- Enhance your Docker networking skills and protect your organization using advanced networking functions- Learn how to use third party tools to extend Docker networking- This practical and recipe-based book demonstrates the different ways in which you can network containers leveraging the Docker engine.Who This Book Is ForThe book is for system administrators as well as developers who are well versed with the concepts of Docker and have basic knowledge of Docker networking. You should also have sound knowledge of networking in general.What You Will Learn- Configure Linux networking primitives used by Docker networking- Build and deploy user-defined Docker networks- Examine the different options for resolving and linking containers- Implement custom networks for Docker to consume- Discover third-party networking plugins such as Weave and Flannel- Work through solutions to secure Docker containers and networks- Observe methodologies for troubleshooting container networks- Explore advanced and experimental Docker networking featuresIn DetailNetworking 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.Style and approachThis practical recipe-based book will take readers to next level of Docker networking. It covers relevant use cases and the advanced features of Docker Cover Copyright Credits About the Author About the Reviewer www.PacktPub.com Table of Contents Preface Chapter 1: Linux Networking Constructs Introduction Working with interfaces and addresses Configuring Linux host routing Exploring bridges Making connections Exploring network namespaces Chapter 2: Configuring and Monitoring Docker Networks Introduction Verifying host-level settings that impact Docker networking Connecting containers in bridge mode Exposing and publishing ports Connecting containers to existing containers Connecting containers in host mode Configuring service-level settings Chapter 3: User-Defined Networks Introduction Viewing the Docker network configuration Creating user-defined networks Connecting containers to networks Defining a user-defined bridge network Creating a user-defined overlay network Isolating networks Chapter 4: Building Docker Networks Introduction Manually networking containers Specifying your own bridge Using an OVS bridge Using an OVS bridge to connect Docker hosts OVS and Docker together Introduction Verifying a host-based DNS configuration inside a container Overriding the default name resolution settings Configuring links for name and service resolution Leveraging Docker DNS Creating Docker DNS aliases Chapter 5: Container Linking andDocker DNS Chapter 6: Securing Container Networks Introduction Enabling and disabling ICC Disabling outbound masquerading Managing netfilter to Docker integration Creating custom iptables rules Exposing services through a load balancer Chapter 7: Working with Weave Net Introduction Installing and configuring Weave Running Weave-connected containers Understanding Weave IPAM Working with WeaveDNS Weave security Using the Weave network plugin Chapter 8: Working with Flannel Introduction Installing and configuring Flannel Integrating Flannel with Docker Using the VXLAN backend Using the host gateway backend Specifying Flannel options Chapter 9: Exploring Network Features Introduction Working with prerelease versions of Docker Understanding MacVLAN interfaces Working with the Docker MacVLAN network driver Understanding IPVLAN interfaces Working with the Docker IPVLAN network driver Tagging VLAN IDs with MacVLAN and IPVLAN networks Chapter 10: Leveraging IPv6 Introduction IPv6 command-line basics Enabling IPv6 capabilities in Docker Working with IPv6-enabled containers Configuring NDP proxying User-defined networks and IPv6 Chapter 11: Troubleshooting Docker Networks Introduction Using tcpdump to verify network paths Verifying VETH pairs Verifying published ports and outbound masquerading Verifying name resolution Building a test container Resetting the local Docker network database Index