Docker Networking: Creating, Managing, and Troubleshooting Container Networks

Course details

This course introduces the essentials of Docker networking for containerized applications. Instructor Shelley Benhoff explores Docker’s built-in network types and shows how to select the right one for various use cases. Through guided exercises and demonstrations, learn how to create, manage, and secure container networks to support scalable applications. The course covers key skills such as setting up inter-container communication and using Docker’s DNS for simplified connections. Troubleshooting scenarios are included to help diagnose and resolve common networking issues. By the end, you’ll have the knowledge to set up robust Docker networks that improve both security and scalability across your container environments.

Learning objectives
Explain the basic concepts and importance of Docker networking.
Describe the different types of Docker networks and their purposes.
Configure a container to use the appropriate network for various scenarios.
Connect multiple containers across Docker networks for inter-container communication.
Troubleshoot common Docker networking issues using basic Docker commands.

Concepts

Introduction

Understanding Docker networking
What you should know

Introduction to Docker Networking

What is Docker networking
Why Docker networking matters
Basic Docker networking commands
Challenge - Networking basics in Docker
Solution - Networking basics in Docker

Types of Docker Networks

Overview of common Docker network types
Overview of other Docker network types
Docker network types in action
Challenge - Selecting the right network
Solution - Selecting the right network

Creating and Managing Networks

Creating a custom bridge network
Managing network connections
Challenge - Custom networks and connections
Solution - Custom networks and connections

Container Communication and DNS Resolution

Using Docker DNS for container discovery
Benefits of the built-in Docker DNS
Connecting containers with aliases
Managing networks using Docker Compose
Challenge - Configuring container communication
Solution - Configuring container communication

Troubleshooting Docker Networking

Common Docker networking issues
Essential Docker networking commands
Challenge - Debugging Docker networks
Solution - Debugging Docker networks

Conclusion

Course recap and key takeaways
Solidify your Docker knowledge