June 2025
Beginner to intermediate
310 pages
7h 59m
English
Content preview from Argo CD: Up and Running
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Chapter 7. Cluster Management
Argo CD can deploy applications to the Kubernetes cluster that Argo CD is installed to without further configuration from administrators. This out-of-the-box default setting makes it easy for administrators to get up and running and reap the benefits of Argo CD immediately. Whether you are just starting off in your GitOps journey or if you are a seasoned DevOps practitioner, this default setting helps administrators implement their solutions.
The simplicity of the Argo CD deployment can accelerate adoption beyond just a single team, to the point where management of additional clusters is needed and desired. Although you can deploy Argo CD instances to these additional clusters, Argo CD has the ability to add, manage, and deploy resources to additional clusters using a “hub-and-spoke” design. The “hub” is the instance of Argo CD itself and is colloquially known as the “Argo CD Control Plane” in larger installations.
In this chapter, we will explore how clusters are managed in Argo CD, including how and where they are defined in the control plane, the ways in which they can be managed, and how we can set up different role-based access control (RBAC) policies to control their access in a multi-tenant situation.
Cluster Architecture
The cluster architecture of Argo CD is fairly straightforward; upon initial deployment, Argo CD has access to the local Kubernetes cluster (i.e., the Kubernetes cluster Argo CD was installed within). This access, as discussed ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.