Stopping script from running in lockdown mode

[BobNiaan]

I am trying to find a way to stop the script from continuing to run when in lockdown mode or any other circumstances This script I'm using now does stop the script from continuing to run, however it only stops if the wrong credential or IP address is stated, it doesn't stop if the vSphere host is in lockdown mode. It will give this error (picture below) and still continuining to run the script with errors.

So this is the code I am using:

param (

[Parameter(Mandatory=$true)][string]$s,

[Parameter(Mandatory=$true)][string]$u,

[Parameter(Mandatory=$true)][string]$p

)

function connect-server {

    #Connecting to server

    Add-PSSnapin VMware.VimAutomation.Core -ErrorAction SilentlyContinue

    $serverin = $s

    $userin = $u

    $passin = $p

    $error.clear()

    Connect-VIServer -Server $serverin -User $userin -Password $passin

    $serverlist = $global:DefaultVIServer

    if($serverlist -eq $null) {

        write-host "No connected servers."

        BREAK

        } else {

        foreach ($server in $serverlist) {

            $serverName = $server.Name

            if($serverName -eq $serverin){

                write-Host "Connected"

                scoringsystem

                } else {

                write-host "Something did not work right. Please try again"

            }

        }

    }

}

[LucD · Accepted solution]

Even if the server is not connected, the $global:defaultviserver will never be equal to empty.

It's a predefined variable, that exists when the PowerCLI modules or PSSnapin are loaded.

Try testing the IsConncted property, like this

if($global:DefaultVIServer.IsConnected){

    Write-Host "Server connected"

}

else{

    Write-Host "Server not connected"

}

[BobNiaan]

It works fine for wrong credentials/lockdown mode but when I plug out the LAN Cable, so it's not connected to the server physically, the script still runs.

[LucD]

Did you try combining the solution with a Try-Catch construct.

Try{

    Connect-VIServer -Server MyVC -ErrorAction Stop

    if($global:DefaultVIServer.IsConnected){

        Write-Host "Server connected"

    }

    else{

        Write-Host "Server not connected"

    }

}

Catch{

        Write-Host "Cannot connect to server"

}