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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.

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Path Info

Clock icon Intermediate
Clock icon 1h 0m
Clock icon Apr 04, 2019

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Table of Contents

  1. Challenge

    Initialize the Swarm

    On the manager node, initialize the swarm:

    [cloud_user@manager]$ docker swarm init 
    --advertise-addr [MANAGER_PRIVATE_IP]
  2. Challenge

    Add the Worker to the Cluster

    Add the worker to the cluster:

    [cloud_user@worker]$ docker swarm join --token [TOKEN] 
  3. Challenge

    Create a Swarm Service

    Create nginx_service:

    [cloud_user@manager]$ docker service create -d --name nginx_service -p 8080:80 --replicas 2 nginx:latest

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