8: Scaling the app
In this chapter, you’ll scale the app up and down. The methods you’ll learn are manual and require a human to implement them. In the real world, you’ll use a Horizontal Pod Autoscaler (HPA) to make scaling automatic. These are beyond the scope of a quick start book, but the things you’ll learn here will be extremely valuable.
However, Kubernetes also has objects that enable automatic scaling, but they’re beyond the scope of a quick start book.
We’ve split the chapter as follows.
- Pre-requisites
- Scale an application up
- Scale an application down
- The role of labels
- Declarative vs imperative
Pre-requisites
If you’ve been following along, you’ll already have a single Deployment managing five replicas of the app you containerized ...
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