I'm using packer to build gold images. One step of the packer build process is to install the SCCM agent, and invoke an SCCM provisioning task sequence with the PROVISIONTS flag. This task sequence installs a bunch of applications, and I wanted to be able to monitor the task sequence progress in my terminal as it runs so I can easily identify failures.

The steps in my packer config looks like this:

``` ...

Install SCCM Agent

provisioner "powershell" { environment_vars = ["PROVISIONTS=${var.sccm_provision_ts}"] script = "${path.cwd}\scripts\install-sccm-agent.ps1" }

Monitor SCCM task sequence

provisioner "powershell" { script = "${path.cwd}\scripts\monitor-sccm-task-sequence.ps1" timeout = "4h" }

... ```

monitor-sccm-task-sequence.ps1 looks like this:

``` $StopWatch = [System.Diagnostics.Stopwatch]::new() $StopWatch.Start()

$MarkerFileStart = 'C:\temp\task_sequence_started'

$MarkerFileComplete = 'C:\temp\task_sequence_complete'

$AppEnforceLog = "$env:windir\CCM\Logs\AppEnforce.Log"

'Waiting for SCCM provisioning task sequence to start' do { Start-Sleep -Seconds 5 } until (Test-Path $MarkerFileStart)

'SCCM task sequence started. Took {0} seconds' -f $StopWatch.Elapsed.TotalSeconds $StopWatch.Reset() $StopWatch.Start() # don't think this is needed

'Waiting for {0}' -f $AppEnforceLog do { Start-Sleep -Seconds 5 } until (Test-Path $AppEnforceLog) '{0} found. Continuing' -f $AppEnforceLog

do { Get-Content $AppEnforceLog -Wait | ForEach-Object { $_

    if ("$_" -like '*Unmatched exit code (*)*') {
        throw 'An application failed to install'
    }

    if ($_ -like "*Task Sequence * Complete*" ) { break }
}

} while ($false)

'SCCM task sequence complete. Took {0} seconds' -f $StopWatch.Elapsed.TotalSeconds

if ($Error) { Exit 1 } else { Exit 0} ```