To validate all VMs with CPU utilization greater than 80%, you can use VMware PowerCLI, a PowerShell module for managing VMware vSphere environments. PowerCLI provides cmdlets that allow you to retrieve performance data for VMs, including CPU utilization. Below is a PowerShell script that accomplishes this task:

# Connect to vCenter Server using PowerCLI
Connect-VIServer -Server "vcenter_server" -User "username" -Password "password"

# Get all VMs
$allVMs = Get-VM

# Initialize an array to store VMs with CPU utilization greater than 80%
$highCpuUtilizationVMs = @()

# Threshold for CPU utilization percentage
$cpuThreshold = 80

# Loop through each VM and check CPU utilization
foreach ($vm in $allVMs) {
    # Get CPU utilization statistics for the VM
    $cpuUsage = Get-Stat -Entity $vm -Stat "cpu.usage.average" -Realtime | Select-Object -Last 1

    # Calculate CPU utilization percentage
    $cpuUtilizationPercentage = $cpuUsage.Value

    # Check if CPU utilization exceeds the threshold
    if ($cpuUtilizationPercentage -gt $cpuThreshold) {
        $highCpuUtilizationVMs += $vm
    }
}

# Output list of VMs with high CPU utilization
Write-Host "VMs with CPU utilization greater than $cpuThreshold%:"
foreach ($vm in $highCpuUtilizationVMs) {
    Write-Host $vm.Name
}

# Disconnect from vCenter Server
Disconnect-VIServer -Server "vcenter_server" -Confirm:$false

Replace the following placeholders in the script:

• vcenter_server: Replace this with the IP or hostname of your vCenter Server.
• username: Replace this with your vCenter Server username with sufficient privileges to access VM information.
• password: Replace this with the password for the specified username.

Save the script with a .ps1 extension, and then run it using PowerShell or the PowerShell Integrated Scripting Environment (ISE).

The script connects to the vCenter Server using the Connect-VIServer cmdlet, retrieves all VMs using Get-VM, and initializes an array to store VMs with CPU utilization greater than 80%. The $cpuThreshold variable sets the threshold for CPU utilization percentage.

The script then loops through each VM, retrieves the CPU utilization statistics using Get-Stat, and calculates the CPU utilization percentage. If the CPU utilization exceeds the threshold, the VM is added to the $highCpuUtilizationVMs array.

Finally, the script outputs the list of VMs with high CPU utilization and disconnects from the vCenter Server using the Disconnect-VIServer cmdlet.

Make sure you have VMware PowerCLI installed on the machine where you run the script. You can install it by following the instructions provided by VMware for your specific operating system. Additionally, ensure that you have appropriate permissions to access the vCenter Server and retrieve VM performance data.