Turbonomic now generates Hot Add reconfigure actions for a vCenter VM that are non-compliant with VM policies requiring vCPU and vMem hot add. When these actions are executed, hot add is automatically enabled for the VM. Once the hot add configurations are enabled within VM environment, further resize actions are non-disruptive.
What is Hot Add?
vCenter Hot Add, is a VMware feature that allows to add or remove CPU and memory resources to a virtual machine while it's running, without needing to power it off. This allows for dynamic resource allocation without downtime, improving flexibility and operational efficiency.
How does Turbonomic generate Hot Add Reconfigure Actions?
These actions are generated for the vCenter VMs based on the Virtual Machine Policy settings and have action category as Compliance. These are generated only when the VM configuration do not have vCPU / vMEM hot add enabled in their environment.
Virtual Machine policy provides two configurations to control the action generation - Enable vCPU hot add and Enable vMEM hot add. When Enable vCPU hot add is disabled in the VM policy, vCPU hot add reconfigure actions will not be generated. Similarly, when Enable vMEM hot add is disabled, vMEM hot add actions will not be generated even if vMEM hot add is disabled in the environment.
Screenshot below shows a sample policy configuration. The policy settings are available in the Virtual Machine Policy, under the section Action Constraints.
Screenshot below shows reconfigure actions generated to enable vCPU hot add settings.
Scope
You can enable hot add only for vCenter VMs that meet the following conditions:
- Fault tolerance is not enabled.
- VMware tools is installed.
- Virtual hardware version is 11 or later.
The hot add feature is provided by vCenter and might be subject to other vendor limitations.
Note
This feature is available from Turbonomic version 8.16.4