Docker Datacenter Cluster

This Docker Enterprise cluster is comprised of 3 kind of nodes:

• Manager: the "brain" of the cluster.
• Worker: doers.
• DTR: Registry nodes take care of hosting docker images.

The cluster will provision fully functional Docker Enterprise environment that follows AWS Well Architectured Framework principles.

Characteristics:

• All infrastructure is in TF and requires 0 manual intervention.
• Stack runs on its own VPC.
• All nodes run in private subnets and are only exposed through Load Balancers.
• Port management has been thoroughly thought to prevent any backdoor or open ports.
• Only ALB and NLB are used as load balancers, instead of the classic previous generation ELBs. This also significantly improves performance for inter-node communication.
• Each type of node is part of an AutoScalingGroup with default scaling policies.
• Each launched master or dtr node is smart enough to decide whether it needs to install the cluster/dtr or just join an existing cluster.
• Only HTTPS traffic is supported for UCP

Installation

1. It is recommended to launch the cluster with only 1 master node at first.
2. Login to UCP (default to ucp.yourselecteddomain.com) and configure as needed.
3. Once all settings have been carefully selected proceed to update ASGs for workers and dtr through Terraform so they can join the cluster.
4. Login to DTR and configure as needed (default to dtr.yourselecteddomain.com).