Powershell IIS Audit Scripting - powershell

Question

I'm in the early stages of learning powershell, and I'm trying to put together a script that remotely gathers information from our IIS servers, but I'm encountering several issues.
The first one is that the IP Address and OU columns remain empty in the output file.
The second one is that I'm not able to format the Administrator group column to have 1 group per line, or delimited by commas.
This is the current version of the code:
$computers = Get-Content "C:\servers.txt"
#Running the invoke-command on remote machine to run the iisreset
$output = foreach ($computer in $computers)
{
Write-Host "Details from server $computer..."
try{
Invoke-command -ComputerName $computer -ErrorAction Stop -ScriptBlock{
# Ensure to import the WebAdministration and AD module
Import-Module WebAdministration
Import-Module ActiveDirectory
$webapps = Get-WebApplication
$list = #()
foreach ($webapp in get-childitem IIS:\AppPools\)
{
$name = "IIS:\AppPools\" + $webapp.name
$item = #{}
$item.server = $env:computername
$item.WebAppName = $webapp.name
$item.Version = (Get-ItemProperty $name managedRuntimeVersion).Value
$item.State = (Get-WebAppPoolState -Name $webapp.name).Value
$item.UserIdentityType = $webapp.processModel.identityType
$item.Username = $webapp.processModel.userName
$item.Password = $webapp.processModel.password
$item.OU = (Get-ADComputer $_ | select DistinguishedNAme)
$item.IPAddress = (Get-NetIPAddress -AddressFamily IPv4)
$item.Administrators = (Get-LocalGroupMember -Group "Administrators")
$obj = New-Object PSObject -Property $item
$list += $obj
}
$list | select -Property "Server","WebAppName", "Version", "State", "UserIdentityType", "Username", "Password", "OU", "Ip Address", "Administrators"
}
} catch {
Add-Content .\failedservers.txt -Force -Value $computer
}
}
$output | Export-Csv -Path .\output.csv
#Stop-Transcript
I'd really appreciate any input on how to get it to work properly or improve on the code itself.
Thanks in advance!

Answer 1

For the OU property, you'll want to reference $env:COMPUTERNAME instead of $_:
$item.OU = (Get-ADComputer $env:COMPUTERNAME |Select -Expand DistinguishedName)
For the IPAddress and Administrators fields you'll want to use -join to create comma-separated lists of the relevant values:
$item.IPAddress = (Get-NetIPAddress -AddressFamily IPv4).IPAddress -join ','
$item.Administrators = (Get-LocalGroupMember -Group "Administrators").Name -join ','