powershell loop to continous check if server is up

Question

I want to run a script to check if 5 servers are up and running based on a specific service is running.If that service is running then we know that server is up and accesible. If it does not reply with a response back then I want it to continously check for it. Heres what I got so far:

Get-Service LANMANSERVER -ComputerName JOHNJ1
Get-Service LANMANSERVER -ComputerName JOHNJ2
Get-Service LANMANSERVER -ComputerName JOHND1
Get-Service LANMANSERVER -ComputerName JOHNM
Get-Service LANMANSERVER -ComputerName JOHNI
start-sleep 90

Andy Arismendi · Accepted Answer · 2012-02-02 18:30:08Z

8

Yep you just need to check the Status property on the returned object like this:

$servers = "JOHNJ1", "JOHNJ2"
foreach ($server in $servers) {
    $status = (get-service -Name lanmanserver -ComputerName $server).Status
    if ($status -eq "Running") {
        "Its Up!"
    } else {
        "Its Down!"
    }
}

Update Here is an example of how to wait for a server to become online:

$servers = "JOHNJ1", "JOHNJ2"
foreach ($server in $servers) {
    while ( (get-service -Name lanmanserver -ComputerName $server).Status -ne "Running" ) {
        "Waiting for $server ..."
        Start-Sleep -Seconds 10
    }
    "$server is Up!"
}

edited Feb 2, 2012 at 18:30

answered Feb 2, 2012 at 8:28

Andy Arismendi

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6 Comments

BigCAT41 Over a year ago

Thanks would I need a while loop to continously check until that server was up based on it checkign for that service?

Andy Arismendi Over a year ago

@BigCAT41 Yep, I added an example of how to do that.

BigCAT41 Over a year ago

$servers = "JOHNJ01", "JOHNJ02", "JOHNI01", "JOHN01", "JOHND01"; foreach ($server in $servers) { $status = (get-service -Name spooler -ComputerName $server).Status $server if ($status -eq "Running") { "Its Up!" } else { "Its Down!" foreach ($server in $servers) { while ( (get-service -Name spooler -ComputerName $server).Status -ne "Running" ) { "Waiting for $server ..." Start-Sleep -Seconds 10 } "$server is Up!" } } } start-sleep 90

Andy Arismendi Over a year ago

@BigCAT41 Glad it helped. If you found this answered your question please mark it as the accepted answer. Thank you.

NealWalters Over a year ago

Is there any way to avoid the red error messages: get-service : Cannot find any service with service name 'lanmanserver'. At D:\scripts\ServerMonitor.ps1:3 char:16 + $status = (get-service -Name lanmanserver -ComputerName $server).Status + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : ObjectNotFound: (lanmanserver:String) [Get-Service], ServiceCommandException + FullyQualifiedErrorId : NoServiceFoundForGivenName,Microsoft.PowerShell.Commands.GetServiceCommand

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