Begin with the basics to understand Docker and Kubernetes networking: learn how to create and interconnect Linux network namespaces using only command-line tools.

Norwegian Tax Administration

Ole-Martin

Community Picks is a section on daily.dev where our community members share the most interesting and valuable content they've discovered online. From insightful articles to handy tools, every post is a gem curated by our dedicated coomunity. To contribute to Community Picks, you need to have at least 250 reputation points, ensuring that only active and trusted members can share their finds.

Community Picks

Learn how to virtualize network resources for containers, enable communication between containers, and establish connectivity with the outside world.

How Container Networking Works: a Docker Bridge Network From Scratch

Main network environment components (devices, routing tables, firewall rules)

Creating the first container using a network namespace (netns)

Connecting containers to host using virtual Ethernet devices (veth)

Creating the second container repeating the same steps

Interconnecting containers using a virtual network switch (bridge)

Reaching out to the outside world (IP routing and masquerading)

Letting the outside world reach out to containers (port publishing)