Using the app of apps pattern
In Chapter 2, Getting Started with Argo CD, we created a quick example of the app of apps pattern while we were using Argo CD Autopilot. It’s also important to talk about how we would use the app of apps pattern in real environments and why we need it. In the previous section, we followed one step of the pattern by bootstrapping the cluster with Argo CD, but in a real environment, we want to create a repeatable K8s cluster with the same services; this is especially critical in disaster-recovery scenarios.
Why the app of apps pattern?
The pattern in practice gives us the ability to have a master application and logical grouping of another set of applications. You can create a master app that creates other apps and allows you to declaratively manage a group of apps that can be deployed in concert.
The pattern is used for bootstrapping a cluster with all the applications, and this is the main thing we are trying to accomplish in this chapter...
