Docker Enterprise Edition (Docker EE)

Docker EE brings GUI (Graphics User Interface) capability in Docker world. Docker EE GUI is often called UCP, it is a front end component of Docker EE. UCP is not just a graphical wrapper, it is a component to interact with DTR (see next sentence). Also, Docker EE gives an ability to create own Docker Hub (so called Docker Trusted Registry (DTR) ), which is located in separate datacenter with limited access. Besides, Docker EE provides better support capabilities and 99.999 percent availability of docker services.

Mandatory requirement for using Docker EE is having at least 2 node Docker Swarm cluster : Manager and Worker. GUI (UCP) can only be run from Manager node. Two components, DTR and UCP, operate on the same port (443), that is why they must run on different nodes – UCP (GUI) on Manager, DTR on Worker. Hardware requirements for both Manager and Worker are : at least 2 CPU and at least 8GB RAM. DTR can’t be set up without UCP.

To provide ssh access between nodes in clouds /etc/ssh/sshd_config file should be used. PasswordAuthentication value should be changed from no to yes.