- Lab
- Cloud
Building Services in Docker
Services are the most basic and straightforward way to run containers using a Docker swarm. They allow you to execute multiple replica containers across all nodes in the Swarm cluster. In this lab, you will have the opportunity to work with Docker services. You will practice scaling services by changing the number of replicas for an existing service. You will also have the opportunity to create a new service and run it in the cluster.
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Table of Contents
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Challenge
Scale the products-fruit service to 5 replicas.
- Scale the service.
docker service update --replicas 5 products-fruitYou can also do it this way (both do the same thing):
docker service scale products-fruit=5 -
Challenge
Create the products-vegetables service.
- Create the
products-vegetablesservice.
docker service create --name products-vegetables -p 8081:80 --replicas 3 linuxacademycontent/vegetable-service:1.0.0- Verify that the service is working.
curl localhost:8081You should see some JSON data containing a list of vegetables.
- 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.