Monitoring a remote service, then starting and sending notfification

Question

0
Hi-
I am a PS newbie so forgive me if this has been answered. We are migrating to SCOM2012 but have 1 2000 server that needs 1 service running on it. Since SCOM2012 can't monitor 2000 servers I need to monitor this service somehow. 
I am trying to write a Poweshell script that will:
1. Detect is the remote machine is up via PING, IF so proceed to step 2 if not then QUIT
2. Get the state of a service on a remote machine (i.e. Get-WmiObject -computer S00APP07 Win32_Service -Filter "Name='Messenger'") 
     If the service resturns a result of STARTED then quit otherwise proceed to step 3
3. Start the service and send an e-mail to [email protected]
4. Wait 30 seconds then goto STEP 2. 
So the result is that if the script finds the machine via ping it will then determine if the service is running or not. If the service is running the script will quit otherwise it will try to restar the service, send me an e-mail and then check again to see
if the service is running.
I had this mostly running in a standard cmd shell script but the "IF STATE 4 GOTO :END" isn't working and I'd rather do it in powershell
Ping Server | find "Reply"
if errorlevel 1 echo NG && goto :END
:BEGIN
sc \\Server querymessenger | find "STATE"
IF STATE 4 GOTO :END
sendmail -f [email protected] -t [email protected] -m THe service stopped and was sent a restart command via this batch file. This batch file will try to restart the service every 30 seconds until it is started. If you receive multiple copies of this e-mail
the auto restarting of the service was not sucessful and needs manual intervention. -u X Service on Server -s EMAILSERVER
SC \\SERVER START MESSENGER 
PING -n 30 127.0.0.1 >nul 
sc \\Server query Messenger | find "STATE"
IF ERRORLEVEL 1 GOTO :BEGIN
:END
If you have a good poweshell script that would do this I would appreciate it.

Answer 1

There are a few different ways to accomplish this task. The way that matches what you had in a batch file is something like this:
$email = @{
To = '[email protected]'
From = '[email protected]'
SMTPServer = 'server.domain.com'
Subject = 'Messenger Service on S00APP07'
If (Test-Connection -Computer S00APP07 -Count 1 -Quiet) {
$Service = Get-WmiObject -computer S00APP07 Win32_Service -Filter "Name='Messenger' AND State='Stopped'"
If ($Service) {
$Return = ($Service.StartService()).ReturnValue
If ($ReturnValue -eq 0) {
Start-Sleep -Seconds 10
If ($Service = Get-WmiObject -computer S00APP07 Win32_Service -Filter "Name='Messenger' AND State='Running'") {
$email.body = 'Messenger Service successfully restarted on S00APP07'
Send-MailMessage @Email
} Else {
$email.body = 'Unable to start Messenger service on S00AP07'
Send-MailMessage @Email
} Else {
$email.body = ("Unable to start Messenger service on S00AP07/ Error code returned: {0}" -f $returnvalue)
Send-MailMessage @Email
You should could also look at using WMI Eventing (Register-WMIEvent) to watch that service and send out alerts when it stops. For a more permanent solution, you should look at permanent event consumers (http://msdn.microsoft.com/en-us/library/windows/desktop/aa393014%28v=vs.85%29.aspx).
Not sure if it is usable in Win2K, but something to look at.
Boe Prox
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