Difference between revisions of "Two-Node High Availability Cluster"

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=Introduction=  
 
=Introduction=  
Proxmox VE High Availability Cluster (Proxmox VE HA Cluster) enables the definition of high available virtual machines. In simple words, if a virtual machine (VM) is configured as HA and the physical host fails, the VM is automatically restarted on one of the remaining Proxmox VE Cluster nodes.
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This article explores how to build a two-node cluster with HA enabled under Proxmox. HA is generally recommended to be deployed on at least three nodes to prevent strange behaviours and potentially lethal data incoherences (for further info look for "Quorum". Nevertheless, with some tweaking, it is also possible to successfully use Proxmox to run on a two-node cluster.  
  
The Proxmox VE HA Cluster is based on proofed Linux HA technologies, providing stable and reliable HA service.
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Although in the case of two-node clusters it is recommended to use a third, shared quorum disk partition, Proxmox allows to build the cluster without it. Let's see how.  
  
[[Image:Screen-HA-status.png|Screen-HA-status]]
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==Hardware requirements==
 
 
==Update to the latest version==
 

Revision as of 16:06, 18 January 2012


Yellowpin.svg Note: This is a work in progress, stay tuned!
Yellowpin.svg Note: Article about Proxmox VE 2.0 beta

Introduction

This article explores how to build a two-node cluster with HA enabled under Proxmox. HA is generally recommended to be deployed on at least three nodes to prevent strange behaviours and potentially lethal data incoherences (for further info look for "Quorum". Nevertheless, with some tweaking, it is also possible to successfully use Proxmox to run on a two-node cluster.

Although in the case of two-node clusters it is recommended to use a third, shared quorum disk partition, Proxmox allows to build the cluster without it. Let's see how.

Hardware requirements