Lab 1: Creating an Overlay Network under Docker Swarm

The overlay network is used to enable containers on different hosts to communicate. Under this lab exercise, we will see how to create Overlay network.

Pre-requisite:

Tested Infrastructure

Pre-requisite

• Create an account with DockerHub
• Open PWD Platform on your browser
• Create 5 Node Instances by clicking on “hammer” sign on the left side of the UI interface

The following command will create a new overlay network called collabnet. All containers registered to this network can communicate with each other, regardless of which node they are deployed onto.

docker network create -d overlay collabnet

Displaying the overlay network

docker network ls

Inspecting the overlay network

docker network inspect collabnet