Powershell - Start ordered sequence of services

Question

I need to start an ordered sequence of services, i need that each service will be up and running before try to start the next one, how can I achieve this in Powershell? How can I wait for the stop too?

Thanks,

DD

Answer 1

If you have a list of service names (say in an array), then foreach service:

1. Get its status
2. If not running, then start it
3. With a delay in the loop, check its status until it is running

The key is likely to be handling all the possibilities for #3 including the service failing.

But an outline would be something like (without handling the error cases):

$serviceNames | Foreach-Object -Process {
  $svc = Get-Service -Name $_
  if ($svc.Status -ne 'Running') {
    $svc.Start()
    while ($svc.Status -ne 'Running') {
      Write-Output "Waiting for $($svc.Name) to start, current status: $($svc.Status)"
      Start-Sleep -seconds 5
    }
  }
  Write-Output "$($svc.Name) is running"
}

Get-Service returns an instance of System.ServiceProcess.ServiceController which is "live"—indicating the current state of the service, not just the state when the instance was created.

A similar stop process would replace "Running" with "Stopped" and the "Start" call with "Stop". And, presumably, reverse the order of the list of services.