Book Image

Proxmox Cookbook

By : Wasim Ahmed, Ravi K Jangid
Book Image

Proxmox Cookbook

By: Wasim Ahmed, Ravi K Jangid

Overview of this book

Proxmox VE's intuitive interface, high availability, and unique central management system puts it on par with the world’s best virtualization platforms. Its simplicity and high quality of service is what makes it the foremost choice for most system administrators. Starting with a step-by-step installation of Proxmox nodes along with an illustrated tour of Proxmox graphical user interface where you will spend most of your time managing a cluster, this book will get you up and running with the mechanisms of Proxmox VE. Various entities such as Cluster, Storage, and Firewall are also covered in an easy to understand format. You will then explore various backup solutions and restore mechanisms, thus learning to keep your applications and servers safe. Next, you will see how to upgrade a Proxmox node with a new release and apply update patches through GUI or CLI. Monitoring resources and virtual machines is required on an enterprise level, to maintain performance and uptime; to achieve this, we learn how to monitor host machine resources and troubleshoot common issues in the setup. Finally, we will walk through some advanced configurations for VM followed by a list of commands used for Proxmox and Ceph cluster through CLI. With this focused and detailed guide you will learn to work your way around with Proxmox VE quickly and add to your skillset.
Table of Contents (18 chapters)
Proxmox Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Rejoining a removed node into a cluster


Sometimes, it may be necessary to rejoin a removed node back into the Proxmox cluster. The node may have been removed by mistake or the node may have become out of order due to hardware failure and needs to be joined back in with same IP address. If the node is going to be rejoined after a clean install of Proxmox on it, then simply follow the steps from the Adding nodes to a cluster recipe, shown earlier in this chapter. If the node is rejoined with same Proxmox installation, then it can be joined forcefully or gracefully. To ensure guaranteed operations, clean the installation of Proxmox on the node. Only then is rejoining recommended.

Getting ready

Similar to adding a node, rejoining also must be done from the CLI. Log in as the root into the Proxmox node that is being rejoined.

How to do it…

If reinstalling of Proxmox on the node is not an option, then to rejoin a removed node in the same cluster, graceful joining is highly recommended over forceful...