- A Cloud Guru
Setting Up Docker Swarm
After years of running containers on a single Docker host, you’ve decided to migrate over to using Docker Swarm. Using Swarm will allow your clients to scale the number of containers up, as demand increases, and then down as demand dies off. Before you can do this, you first need to set up a Swarm cluster consisting of a manager and a worker node. Once setup is complete, create an Nginx service to test the cluster.
Table of Contents
Initialize the Swarm
On the manager node, initialize the swarm:
[cloud_user@manager]$ docker swarm init --advertise-addr [MANAGER_PRIVATE_IP]
Add the Worker to the Cluster
Add the worker to the cluster:
[cloud_user@worker]$ docker swarm join --token [TOKEN] [MANAGER_PRIVATE_IP]:2377
Create a Swarm Service
[cloud_user@master]$ docker service create -d --name nginx_service -p 8080:80 --replicas 2 nginx:latest
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.