Information retrieval across numerous Hyper-V clusters and nodes can be tedious, but PowerShell commands and scripts make it easy to generate a Hyper-V report that contains all the information you need.
You can use PowerShell to perform several types of operational tasks in Hyper-V, such as checking the Hyper-V replication status between Hyper-V primary and secondary servers. You can also use PowerShell to interact with and manage Hyper-V clusters.
Follow the steps below to generate a Hyper-V report that retrieves information from the nodes that host VM resources in a Hyper-V cluster and to verify that the nodes in a Hyper-V cluster are hosting the VMs they’re supposed to.
First, use the Get-ClusterNode PowerShell cmdlet to list the VMs each Hyper-V cluster node hosts. To list VMs from a single Hyper-V node, enter the command below.
This command targets VMs on a single Hyper-V cluster node, but you need a more advanced script to retrieve more information.
Collect all the cluster information for a Hyper-V report
The below PowerShell script collects the same information from all the cluster nodes in a particular Hyper-V cluster. All you need to do is modify the cluster name in the $HVCluster variable before you execute the script.
The above script collects all the nodes from PRODCLUSTER, which the script specifies in the $HVCluster variable; executes the Get-ClusterNode command against each retrieved node; and generates a Hyper-V report in C:TempVMsPerNode.CSV. This Hyper-V report contains the names of the nodes and the names of the VMs each node hosts.
Target Hyper-V clusters by text file
The script above collects the VMs each node hosts in a single Hyper-V cluster. With the next script, you can target a list of Hyper-V clusters specified in a text file and then collect a Hyper-V report for each cluster.
The above script collects each Hyper-V cluster that C:TempHVClust.TXT specifies, executes the Get-ClusterNode PowerShell cmdlet for each node in the Hyper-V cluster in question and then adds the result to the C:TempVMsPerNode.CSV file.
Use a Hyper-V report to verify production VMs
The two PowerShell scripts above collect Hyper-V cluster nodes and the VMs they host and then generate a Hyper-V report based on that information. This process is tedious if you must also verify that the production VMs are running on the right Hyper-V nodes in a Hyper-V cluster.
A third PowerShell scriptcan resolve this. The script in Figure F uses a predefined file called C:TempVMNode.CSV, shown below, which contains the Hyper-V node and VM mapping.
Once you have the VMNode.CSV file ready, the PowerShell script below executes against a specified Hyper-V cluster and verifies that the VMs are running on the correct Hyper-V nodes.
After this script finishes, the resulting file should resemble Figure G. This Hyper-V report includes node names, VM names and statuses that indicate whether the VMs are running on the correct Hyper-V node or not.
With PowerShell, you can use commands and scripts to automate information retrieval. By tracking Hyper-V cluster and node information, you can ensure VMs remain properly configured once you deploy them in production.