Skip to main content

Change the placement policy of your System Center Virtual Machine Manager configuration

Last week a colleague was creating a new test environment using the Team Foundation Server Lab Management features when we encountered following error:

Error when creating a new virtual machine on <machinename>:

TF259115: Team Foundation Server could not find any suitable host to deploy the virtual machine: <machinename>.

Contact your administrator to fix the issues on the hosts below. (Hosts are listed in brackets)

Memory requirement of the virtual machine(s) exceeds the available host resources. The placement policy for this host group is set to be conservative and hence virtual machines that are in stopped state are also accounted as consuming host resources. Your administrator can change this policy by running the TfsLabConfig tool.

As our lab management environment has a large set of virtual machines who are in a stopped state, we ran out fast of memory resources. We can change this behavior to exclude the non-running machines from memory usage. Therefore log on to your Team Foundation application server and run the following command from the command line:

TfsConfig.exe lab /settings /collectionName:defaultCollection /list

This command lists your current configuration settings for your lab environment.You will see that it is using a conservative placement policy. Run the following command to change the policy:

TfsConfig.exe lab /settings /collectionName:defaultCollection /hostGroup /edit /name:"All hosts" /labenvironmentplacementpolicy:aggressive

Labels:

Popular posts from this blog

.NET 8–Keyed/Named Services

A feature that a lot of IoC container libraries support but that was missing in the default DI container provided by Microsoft is the support for Keyed or Named Services. This feature allows you to register the same type multiple times using different names, allowing you to resolve a specific instance based on the circumstances. Although there is some controversy if supporting this feature is a good idea or not, it certainly can be handy. To support this feature a new interface IKeyedServiceProvider got introduced in .NET 8 providing 2 new methods on our ServiceProvider instance: object? GetKeyedService(Type serviceType, object? serviceKey); object GetRequiredKeyedService(Type serviceType, object? serviceKey); To use it, we need to register our service using one of the new extension methods: Resolving the service can be done either through the FromKeyedServices attribute: or by injecting the IKeyedServiceProvider interface and calling the GetRequiredKeyedServic...
Read more

Azure DevOps/ GitHub emoji

I’m really bad at remembering emoji’s. So here is cheat sheet with all emoji’s that can be used in tools that support the github emoji markdown markup: All credits go to rcaviers who created this list.
Read more

Kubernetes–Limit your environmental impact

Reducing the carbon footprint and CO2 emission of our (cloud) workloads, is a responsibility of all of us. If you are running a Kubernetes cluster, have a look at Kube-Green . kube-green is a simple Kubernetes operator that automatically shuts down (some of) your pods when you don't need them. A single pod produces about 11 Kg CO2eq per year( here the calculation). Reason enough to give it a try! Installing kube-green in your cluster The easiest way to install the operator in your cluster is through kubectl. We first need to install a cert-manager: kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.14.5/cert-manager.yaml Remark: Wait a minute before you continue as it can take some time before the cert-manager is up & running inside your cluster. Now we can install the kube-green operator: kubectl apply -f https://github.com/kube-green/kube-green/releases/latest/download/kube-green.yaml Now in the namespace where we want t...
Read more