Multi-containers orchestration

As we pack more and more applications into isolated boxes, we'll soon realize that we need a tool that is able to help us tackle many containers simultaneously. In this section, we'll move a step up from spinning up simply one single container to orchestrating containers in a band.

Piling up containers

Modern systems are usually built as a stack made up of multiple components that are distributed over networks, such as application servers, caches, databases, message queues, and so on. Meanwhile, a component itself is also a self-contained system with many sub-components. What's more, the trend of microservices introduces additional degrees of complexity into such entangled relationships between systems. From this fact, even though container technology gives us a certain degree of relief regarding deployment tasks, launching a system is still difficult.

Say we have a simple application called kiosk, which connects to a Redis to manage how many tickets we currently...