Get all the variables scoped to a specific machine

script.ps1

#This script required the Octoposh module: http://dalmirog.github.io/OctoPosh/

$machine = "" #Name of the machine you want to look variables for.

$MachineID = Get-OctopusMachine -MachineName $machine -ResourceOnly | select -ExpandProperty Id
$variableSets = Get-OctopusVariableSet

$list = @()

foreach ($variableSet in $variableSets){
   Foreach ($var in $variableSet.resource.variables){
    
        If($var.scope.Values -ne 0){
            [string[]]$scope = $var.Scope.Values
        
            $scope = $scope.split(" ")

            If ($Scope -match $MachineID){
                $obj = [PSCustomObject]@{
                    ProjectName = $variableSet.ProjectName
                    LibrarySetName = $variableSet.LibraryVariableSetName
                    VariableName = $var.Name
                    VariableValue = $var.Value
                }
                $list += $obj   
            }   
        }
   } 
}

$list

Here's a slightly altered version that dumps all variables to a CSV file:

# See: http://help.octopusdeploy.com/discussions/questions/5608-see-all-variables-set-on-a-specific-machine
# A version of: https://gist.github.com/Dalmirog/a84e98d39ba88431e21f
# This script requires the Octoposh module: http://dalmirog.github.io/OctoPosh/

$env:OctopusURL = "http://???"
$env:OctopusAPIKey = "API-???"

Import-Module Octoposh

$variableSets = Get-OctopusVariableSet

$list = @()

foreach ($variableSet in $variableSets)
{
    foreach ($var in $variableSet.resource.variables)
    {
        if ($var.scope.Values -ne 0)
        {
            [string[]]$scope = $var.Scope.Values

            $scope = $scope.split(" ")

            $obj = [PSCustomObject]@{
                ProjectName = $variableSet.ProjectName
                LibrarySetName = $variableSet.LibraryVariableSetName
                VariableName = $var.Name
                VariableValue = $var.Value
            }

            $list += $obj
        }
    } 
}

$list | Export-CSV AllOctopusVars.csv -NoTypeInformation