After Chapter 1, Basic Concepts of a Proxmox Virtual Environment, you might be excited to know how much more can we do with the help of Proxmox. Maybe you are already planning to virtualize your existing server with the help of Proxmox. Wait! Isn't it dangerous to centralize all servers in one physical machine? If you are an experienced system administrator, you must've been told to avoid a single point of failure; you have to minimize the number of services on a physical machine. We are now violating this rule; how should we solve this problem? In this chapter, we will cover the following topics:
What is a high availability environment?
Introducing a Proxmox VE cluster
Hardware requirements for a Proxmox cluster
How does Proxmox provide HA capacity?