Reset monitors all at once with a script

Question

I am getting numerous SCOM Heath Monitor alerts for the following 2 conditions:
AD Domain Availability Health Degraded
AD Site Availability Health Degraded
I have searched the internet for scripts to reset them each all at once. I have found a couple of scripts and ran them in the SCOM Shell and they say that that are resetting the alerts but in actuality, they don't.
The scripts I used were found at these 2 sites:
(url)http://blogs.technet.com/b/ken_brumfield/archive/2010/06/23/making-the-world-greener-one-monitor-at-a-time-_2d00_-reset-scom-monitors-enmasse.aspx(/url)
(url)http://gallery.technet.microsoft.com/SCOM-2012-Batch-reset-63a17534(/url)
Does anyone know of a script that actually works for this purpose.

Answer 1

Use this simple PS, I am using this daily to reset health of closed alerts - please ensure you close the alerts as the script will only detect the closed alerts generated by the monitors
Works well for my purpose - hope this helps...
#PS to reset health of closed alerts generated by the monitors older than 7 days
# Import Operations Manager Module and create Connection 
Import-Module OperationsManager 
New-SCOMManagementGroupConnection 
$alerts=get-scomalert -Criteria "Severity!=0 AND IsMonitorAlert=1 AND ResolutionState=255"| where {$_.LastModified -ge ((get-date).AddDays(-7)).ToUniversalTime()} 
if ($alerts -is [object]) 
foreach ($alert in $alerts) 
$monitoringobject = Get-SCOMClassinstance -id $alert.MonitoringObjectId 
# Reset Monitor 
If (($monitoringobject.HealthState -eq "Error") -or ($monitoringobject.HealthState -eq "Warning")) 
$monitoringobject.ResetMonitoringState() 
Faizan