Continuous Delivery with Docker and Jenkins

Introducing server clustering

A server cluster is a set of connected computers that work together in a way that they can be used similarly to a single system. Servers are usually connected through the local network with a connection fast enough to ensure a small influence of the fact that services are distributed. A simple server cluster is presented in the following image:

A user accesses the cluster via a host called the manager, whose interface should be similar to a usual Docker host. Inside the cluster, there are multiple worker nodes that receive tasks, execute them, and notify the manager of their current state. The manager is responsible ...