When Docker is installed, three networks are automatically created on the host: bridge, host and none . You can use the command docker network ls to check. By Tony Li Xu.
libnetwork is a docker container network library. The core content is the Container Network Model (CNM) defined by it. This model abstracts the container network and consists of these components: sandbox, endpoint, network.
These network schemes solve the problem of container communication within a single Docker host. Let’s talk about scenarios for communications between containers across hosts in this article.
Source: https://blog.devgenius.io/docker-cross-host-networking-8761e3ddebc9
Cross-host networking scenarios include:
- Docker native overlay and macvlan
- Third-party solutions: commonly used ones include flannel and calico
The docker network is a very active technical field, and new solutions are constantly being developed, so it is a very important question to ask: “How do so many solutions integrate with docker?” The answer is: libnetwork and CNM. Interesting read!
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