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Mastering Proxmox

You're reading from   Mastering Proxmox Build virtualized environments using the Proxmox VE hypervisor

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Product type Paperback
Published in Nov 2017
Publisher Packt
ISBN-13 9781788397605
Length 494 pages
Edition 3rd Edition
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Author (1):
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Wasim Ahmed Wasim Ahmed
Author Profile Icon Wasim Ahmed
Wasim Ahmed
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Table of Contents (17) Chapters Close

Preface 1. Understanding Proxmox VE and Advanced Installation 2. Creating a Cluster and Exploring the Proxmox GUI FREE CHAPTER 3. Proxmox under the Hood 4. Storage Systems 5. Installing and Configuring Ceph 6. KVM Virtual Machines 7. LXC Virtual Machines 8. Network of Virtual Networks 9. The Proxmox VE Firewall 10. Proxmox High Availability 11. Monitoring the Proxmox Cluster 12. Proxmox Production-Level Setup 13. Back Up and Restore Virtual Machines 14. Updating/Upgrading Proxmox 15. Proxmox Troubleshooting 16. Rescuing Proxmox

Requirements for HA setup


In Proxmox 4.0, the HA feature has been completely redesigned from the ground up, making it much simpler to configure and use. There are a few requirements that the virtual environment must meet before configuring Proxmox HA. They are as follows:

  • At least three nodes
  • Shared storage
  • Fencing

At least three nodes

HA must be configured in a cluster with a minimum of three nodes because with three nodes or more, achieving a quorum is possible. Quorum is the minimum number of votes required for Proxmox cluster operation. This minimum number is the total vote by a majority of the nodes. For example, in a cluster of three Proxmox nodes, a minimum vote of two Proxmox nodes is required to form a quorum. In a cluster with eight nodes, a minimum vote of five Proxmox nodes is required to form a quorum. With just two nodes, the ratio of votes will always be 1:1, so no quorum is possible.

Shared storage

During a node failure, VM configuration files are moved to the next member node in...

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