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- #Disable hyperthreading in a vm esxi 6.5 how to#
- #Disable hyperthreading in a vm esxi 6.5 update#
- #Disable hyperthreading in a vm esxi 6.5 download#
#Disable hyperthreading in a vm esxi 6.5 download#
You can download the PowerCLI script here called enable-disable-vsphere-api-method.ps1 which includes two functions Enable-vSphereMethod and Disable-vSphereMethod.
![disable hyperthreading in a vm esxi 6.5 disable hyperthreading in a vm esxi 6.5](https://www.jorgedelacruz.es/wp-content/uploads/2017/09/vcsa-snmp-prtg-019.png)
That work became the foundation for the new PowerCLI script that I had created for disabling and enabling the vMotion capability for a particular VM. Below is a screenshot of invoking the disableMethods API using the vSphere MOB.Ī couple of weeks back I started to investigate on how we might be able to automate against the vSphere MOB. The result of that investigation lead to the creation of a simple PowerCLI script that allows you to automate operations using the vSphere MOB which I had published here.
![disable hyperthreading in a vm esxi 6.5 disable hyperthreading in a vm esxi 6.5](https://www.matrix7.com.au/wp-content/uploads/2020/03/ESXi.jpg)
However, it is possible to access these APIs using the vSphere MOB, but it is not very user friendly nor intuitive.
#Disable hyperthreading in a vm esxi 6.5 how to#
Here is a quick PowerCLI snippet on how to retrieve the current set of disable methods for a VM:Īs mentioned in this article, the ability to enable and disable these methods are only available as an internal vCenter Server API. For example, if you have a VM that is currently powered on, then the PowerOnVM_Task API would not be available and would show up in the disabled list. These are not governed by vSphere Permissions but rather the runtime state of the VM. Please use at your own risk.Įach VM has a property called DisableMethod which lists the specific vSphere API methods that are currently disabled. This means that as of 6.5, you no longer have the ability to disable a specific migration type and when you apply the settings, both migration types will be disabled for the specific VM.ĭisclaimer: The use of internal APIs are not officially supported by VMware and can change at any time.
#Disable hyperthreading in a vm esxi 6.5 update#
UPDATE (09/27/18) - As of vSphere 6.5, the MigrateVM_Task() method has been deprecated in favor of the RelocateVM_Task() which is used to handle BOTH vMotion, Storage vMotion and other variants. After thinking about about how EAM handles "disabling" certain operations for a VM and recalling an article I wrote last year which leveraged this exact capability to resolve an NSX Controller issue, I thought why not apply it to this use case here? Given that this topic had recently come up again, I was wondering if there was an easier way in which this could be achieved and made more manageable for our customers. For these cases, customers just want to be able to completely disable vMotion for a given VM and prevent anyone from migrating the VM, including the vSphere Administrators. I actually like the idea of using vSphere Permissions to prevent a vMotion, however, I have seen some customers push back on this because the vSphere Administrator still has the ability to perform this operation. However, many of these solutions do not work very well or is very difficult to manage at scale. This solutuion even allows you to configure custom icons for your Service VMs!įor all other use cases outside of the "Service VMs", there really is not an easy way of disabling vMotion for a particular VM. There have been many solutions that have been suggested in the past ranging from disabling DRS for a specific VM, DRS Affinity Rules, VM miss-configurations to break vMotion compatibility to using vSphere Permissions to prevent vMotion operations. For this particular use case, VMware provides our partners with an integration hook into the vSphere platform called ESX Agent Manager (EAM) that ensures these "Service VMs" are not allowed to be powered off or migrated to another ESXi host, even in the case of a Maintenance Mode operation. The classic example is a 3rd Party VM solution that provides Anti-Malware, Intrusion Detection & Firewall capabilities for your workload VMs. Do not get me wrong, there are definitely some valid use cases where you would not want a particular VM to be migrated off. In fact, this topic comes up on some what of a frequent basis and usually driven by arcane change management processes or worse licensing restrictions. The question of disabling vMotion for a specific set of Virtual Machine(s) is not a new one.