KodeKloud Notes

In this guide, you will learn how to install Docker Enterprise Edition (EE) on AWS. We cover registering for a 30-day Docker EE trial, installing Docker EE Engine on CentOS 7.6, configuring Universal Control Plane (UCP) and Docker Trusted Registry (DTR), and deploying a sample application with both Swarm and Kubernetes on your UCP cluster.

Architecture and Prerequisites

All three CentOS 7.6 nodes share a flat network, have required ports open, and run NTP for time sync.

Node	Role	vCPU	RAM	Storage	IP Assignment
ucp-manager	UCP Manager	2	8 GB	20 GB	Public + Private
ucp-worker	UCP Worker	2	8 GB	20 GB	Public + Private
dtr-node	DTR Node	4	16 GB	20 GB	Public + Private

1. Register for Docker EE Trial License

Sign in to Docker Hub: https://hub.docker.com
Navigate to Explore → Docker EE → CentOS.
Under Get Docker Enterprise CentOS, click Start One-Month Trial and submit the form.
After activation, go to My Content to view your license.
Click Setup to copy your private Docker EE repository URL.

The image shows a webpage from Docker Hub with setup instructions for getting Docker Enterprise on CentOS, including links to resources and installation guides.

Note

Ensure your corporate firewall allows access to storebits.docker.com and any other Docker EE endpoints.

2. Review Official Installation Documentation

Visit the Mirantis-hosted docs for Docker EE Engine:

Go to https://docs.docker.com → Product Manual → Docker Enterprise.
Select Engine → Linux → CentOS.

You’ll find prerequisites (CentOS 7.1+) and steps to configure the Docker EE Yum repository. Be aware of the Mirantis acquisition announcement effective November 13, 2019.

The image shows a webpage from Docker documentation detailing how to get Docker Engine - Enterprise for CentOS, including prerequisites and installation methods.

3. Install Docker EE Engine

Perform these steps on ucp-manager (then repeat on ucp-worker and dtr-node):

3.1 Verify CentOS Version

[root@ucp-manager ~]# cat /etc/centos-release
CentOS Linux release 7.6.1810 (Core)

3.2 Remove Any Older Docker Packages

sudo yum remove -y docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-engine || true

3.3 Configure the Docker EE Repository

Export your private repository URL (replace <your-docker-ee-url>):
```
export DOCKERURL="<your-docker-ee-url>"
```

Store it in Yum variables:

sudo sh -c 'echo "$DOCKERURL/centos" > /etc/yum/vars/dockerurl'

Install prerequisites and add the Docker EE repo:

sudo yum install -y yum-utils device-mapper-persistent-data lvm2

sudo -E yum-config-manager \
  --add-repo \
  "$DOCKERURL/centos/docker-ee.repo"

3.4 Fix `$dockerosversion` Placeholder (if needed)

If yum repolist returns a $dockerosversion error, edit /etc/yum.repos.d/docker-ee.repo:

[docker-ee-stable]
name=Docker EE Stable - $basearch
baseurl=https://storebits.docker.com/ee/centos/sub-<ID>/centos/7/$basearch/stable
...

Replace $dockerosversion with 7 under [docker-ee-stable], then rerun:

sudo yum repolist

Warning

Editing repository files incorrectly can break package resolution. Always back up the .repo file before making changes.

3.5 Install Docker EE Packages

sudo yum install -y docker-ee docker-ee-cli containerd.io

3.6 Enable and Start Docker

sudo systemctl enable docker
sudo systemctl start docker
sudo systemctl status docker

3.7 Verify the Installation

[root@ucp-manager ~]# docker version
Client: Docker Engine - Enterprise
 Version:           19.03.5
 ...
Server: Docker Engine - Enterprise
 Engine:
  Version:          19.03.5
  ...

Congratulations! You have successfully installed Docker EE Engine on CentOS 7.6. Next, you will configure UCP and DTR, add worker nodes, and deploy sample workloads using Swarm and Kubernetes.

Links and References

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