Deploy DDC on Linux serversEstimated reading time: 2 minutes
The best way to try Docker Datacenter for yourself is to get the 30-day trial available at the Docker Store.
Once you get your trial license, you can install Docker Datacenter in your Linux servers. Make sure all the hosts you want to manage in with Docker Datacenter have a minimum of:
- Linux kernel version 3.10 or higher
- CS Docker Engine version 1.13.0 or higher
- 4.00 GB of RAM
- 3.00 GB of available disk space
Also make sure the hosts are running one of these operating systems:
- CentOS 7.1 or 7.2
- Red Hat Enterprise Linux 7.0, 7.1, 7.2, or 7.3
- Ubuntu 14.04 LTS or 16.04 LTS
- SUSE Linux Enterprise 12
Step 1: Install Docker EE Container Engine
Install the Docker Enterprise Edition container engine on all hosts you want to manage by following these instructions.
Step 2: Install Universal Control Plane
Docker Universal Control Plane (UCP) allows managing from a centralized place your images, applications, networks, and other computing resources.
Use ssh to log in to the host where you want to install UCP and run:
docker run --rm -it --name ucp \ -v /var/run/docker.sock:/var/run/docker.sock \ docker/ucp:2.1.5 install \ --host-address <node-ip-address> \ --interactive
This runs the install command in interactive mode, so that you’re prompted for any necessary configuration values.
Step 3: License your installation
Now that UCP is installed, you need to license it. In your browser, navigate to the UCP web UI, log in with your administrator credentials and upload your license.
Step 4: Join more nodes to UCP
Join more nodes so that you can manage them from UCP. Go to the UCP web UI, navigate to the Resources page, and go to the Nodes section.
Click the Add Node button to add a new node.
Check the ‘Add node as a manager’ option to join the node as a manager to provide replication and make UCP highly available. For a highly available installation, make sure you have 3, 5, or 7 manager nodes.
Copy the command to your clipboard, and run it on every node that you want to be managed by UCP. After you run the command in the node, the node will show up in the UP web UI.
Step 5: Install Docker Trusted Registry
Docker Trusted Registry (DTR) is a private image registry so that you can manage who has access to your Docker images. DTR needs to be installed on a node that is being managed by UCP.
Use ssh to log in to the host where you already installed UCP, and run:
docker run -it --rm \ docker/dtr:2.2.6 install \ --ucp-node <node-hostname> \ --ucp-insecure-tls
--ucp-node is the hostname of the UCP node where you want to deploy
--ucp-insecure-tls tells the installer to trust the certificates used