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There are 2 ways of controlling the behavior of Node Fairness on a Hyper-V 2016 Failover Cluster, using Failover Cluster Manager and of course by PowerShell! In this blog post, we will go through the configuration of Node Fairness using PowerShell.

This is a 2 step configuration process.

First, we need to configure the level of aggressiveness of cluster based on the monitored heuristics which are CPU and Memory.

#Configuring Agressiveness of Balancing
(Get-Cluster).AutoBalancerLevel = <value>

 

AutoBalancerLevel Aggressiveness Behavior
1 (default) Low Move when host is more than 80% loaded
2 Medium Move when host is more than 70% loaded
3 High Move when host is more than 60% loaded

Secondly, we need to configure the VM Load Balancing behavior of the cluster.

#Configure VM Load Balancing
(Get-Cluster).AutoBalancerMode = <value>
AutoBalancerMode Behavior
0 Disabled
1 Load balance on node join
2 (default) Load balance on node join and every 30 minutes

The default values are the following:

  • Auto Balancer Level: Move when host is more than 80% loaded (Value 1).
  • Auto Balancer Mode: Load balance on node join and every 30 minutes (Value 2).

And this is how the configuration looks like in the Failover Cluster Manager.

More posts on Hyper-V 2016:

Thanks for reading!

 

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