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Max RAM per machine setting explained#

The Max RAM per machine setting determines the maximum amount of RAM that a virtual machine can utilize on a particular cluster. This setting helps prevent a single VM from consuming excessive resources and affecting the cluster's overall performance.

At the time of installation, the default maximum RAM setting is 64GB. To run a virtual machine requiring more than 64GB, this setting must be adjusted. Fortunately, changes can be made at runtime, so a node reboot is not required to apply the updated setting.

If a VM attempts to use more RAM than allowed by the cluster, an error message, "Machine exceeds the max amount of RAM allowed on this cluster", will be logged. To resolve this, adjust the setting to accommodate the workload. vm_max_ram_exceeded.png

Adjusting the Max RAM per machine setting#

Follow these steps to adjust the setting:

  1. From the Main Dashboard, navigate to System and then Clusters in the left-hand menu, or select the Clusters count box in the top row.
  2. In the Cluster list view, select the cluster where the virtual machine is set to run.
  3. Select Edit in the left-hand menu.
  4. Adjust the Max RAM per machine setting to accommodate the virtual machine's requirements. max_ram_per_machine.png
  5. Submit the changes by clicking Submit at the bottom of the page.
  6. Start the virtual machine to confirm the changes.

By increasing the Max RAM per machine setting, larger VMs can be successfully launched on the cluster.

Document Information

  • Last Updated: 2024-08-29
  • vergeOS Version: 4.12.6