- Lab
- A Cloud Guru
Deploying a Service on an Overlay Network
Bridge networks are a powerful tool for controlling communication between containers on a single host, but what if you need to provide isolated networking between containers in Docker Swarm? With Docker Swarm, you can use custom overlay networks to allow groups of containers to communicate transparently, even if they are running on different swarm nodes. In this lab, you will have the opportunity to work with overlay networks. You will set up a custom overlay network and deploy three different services that communicate with each other using this network.
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Table of Contents
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Challenge
Create the overlay network.
- Create the
prices-overlay-netoverlay network.
docker network create --driver overlay prices-overlay-net - Create the
-
Challenge
Create the base-price service.
- Create the
base-priceservice.
docker service create --name base-price --network prices-overlay-net --replicas 3 linuxacademycontent/prices-base-price:1 - Create the
-
Challenge
Create the sales service.
- Create the
salesservice.
docker service create --name sales --network prices-overlay-net --replicas 3 linuxacademycontent/prices-sales:1 - Create the
-
Challenge
Create the total-price service.
- Create the
total-priceservice.
docker service create --name total-price --network prices-overlay-net --replicas 2 -p 8080:80 linuxacademycontent/prices-total-price:1- Verify that you get the total price data.
curl localhost:8080You should see a list of products and the total price for each. These prices are calculated by communicating with the
base-priceandsalesservices using the custom overlay network. - Create the
What's a lab?
Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.
Provided environment for hands-on practice
We will provide the credentials and environment necessary for you to practice right within your browser.
Guided walkthrough
Follow along with the author’s guided walkthrough and build something new in your provided environment!
Did you know?
On average, you retain 75% more of your learning if you get time for practice.
