json.ps1

# gets a list of all vms
$vms = Get-VM

# creates an empty array
$vmArray = @()

# loops through each vm
foreach ($vm in $vms) {
  # creates a custom object
  $vmObj = [PSCustomObject]@{
    CPU    = $vm.NumCpu
    Memory = $vm.MemoryGB
    Name   = $vm.Name
    Status = $vm.PowerState
  }
  # adds the object to the array
  $vmArray += $vmObj
}

# converts the array to json
$json = $vmArray | ConvertTo-Json

# writes the json to a file
$json | Out-File -FilePath C:\temp\vm.json

vm.json

[
  {
    "CPU": 1,
    "Memory": 0.125,
    "Name": "vCLS-c845d6b6-22b6-4de1-97b8-8c308a3436af",
    "Status": 1
  },
  {
    "CPU": 2,
    "Memory": 12.0,
    "Name": "vcsa7",
    "Status": 1
  },
  {
    "CPU": 4,
    "Memory": 16.0,
    "Name": "control-3.piccola.us",
    "Status": 1
  },
  {
    "CPU": 4,
    "Memory": 16.0,
    "Name": "control-1.piccola.us",
    "Status": 1
  },
  {
    "CPU": 4,
    "Memory": 16.0,
    "Name": "control-5.piccola.us",
    "Status": 1
  },
  {
    "CPU": 4,
    "Memory": 16.0,
    "Name": "control-4.piccola.us",
    "Status": 1
  },
  {
    "CPU": 4,
    "Memory": 16.0,
    "Name": "control-2.piccola.us",
    "Status": 1
  },
  {
    "CPU": 1,
    "Memory": 4.0,
    "Name": "openvpn",
    "Status": 0
  },
  {
    "CPU": 4,
    "Memory": 6.0,
    "Name": "app01",
    "Status": 1
  },
  {
    "CPU": 4,
    "Memory": 4.0,
    "Name": "app02",
    "Status": 1
  },
  {
    "CPU": 2,
    "Memory": 10.0,
    "Name": "vcsa67",
    "Status": 0
  },
  {
    "CPU": 4,
    "Memory": 12.0,
    "Name": "dockerlin",
    "Status": 1
  },
  {
    "CPU": 2,
    "Memory": 4.0,
    "Name": "ca01",
    "Status": 0
  },
  {
    "CPU": 2,
    "Memory": 4.0,
    "Name": "ca02",
    "Status": 1
  },
  {
    "CPU": 2,
    "Memory": 2.0,
    "Name": "dc03",
    "Status": 1
  },
  {
    "CPU": 2,
    "Memory": 6.0,
    "Name": "puppet",
    "Status": 0
  }
]