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How to Create an Override for a Monitor

System Center

Updated: May 22, 2009

Applies To: Operations Manager 2007 R2, Operations Manager 2007 SP1, System Center Operations Manager 2007

You can create an override for a property or configuration parameter for a monitor. A property override changes the default value of a monitor property, and a configuration override changes the default value of a custom configuration setting for a monitor. If you want to create an override for a monitor, use the ManagementPackMonitorPropertyOverride or ManagementPackMonitorConfigurationOverride class. These classes are derived from the ManagementPackMonitorOverride class.

The following properties can be overridden for unit monitors.

  • Enabled

  • GenerateAlert

  • AutoResolve

  • AlertPriority

  • AlertOnState

  • AlertSeverity

The following properties can be overridden for rollup monitors.

  • Enabled

  • Algorithm

  • AutoResolve

  • AlertPriority

  • AlertOnState

  • AlertSeverity

The following properties can be overridden for dependency monitors.

  • Enabled

  • Algorithm

  • AutoResolve

  • AlertPriority

  • AlertOnState

  • AlertSeverity

  • MemberInMaintenance

  • MemberUnavailable

  • IgnoreMemberInMaintenance

  • IgnoreMemberUnavailable

To figure out which parameters can be overridden, you must look at the definition of the monitor in the Management Pack that defines the monitor. All the parameters that can be overridden are defined in the OverrideableParameters element of the monitor You can also call the GetOverrideableParameters method to get the list of parameters programmatically.

The following example creates an override for the Enabled property of a monitor.

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Text;
using Microsoft.EnterpriseManagement;
using Microsoft.EnterpriseManagement.Administration;
using Microsoft.EnterpriseManagement.Common;
using Microsoft.EnterpriseManagement.Configuration;
using Microsoft.EnterpriseManagement.Monitoring;

namespace SDKSamples
{
    class Program
    {
        //---------------------------------------------------------------------
        static void Main(string[] args)
        {
            ManagementGroup                         mg;
            ManagementPack                          mp;
            MonitoringClassCriteria                 classCriteria;
            MonitoringClass                         monitoringClass;
            MonitorCriteria                         monitorCriteria;
            ManagementPackMonitor                   monitor;
            ManagementPackMonitorPropertyOverride   monitorOverride;

            mg = new ManagementGroup("localhost");

            mp = mg.GetManagementPacks("OverrideTestMP")[0];

            classCriteria = new MonitoringClassCriteria("Name='Microsoft.SQLServer.2005.Database'");

            monitoringClass = mg.GetMonitoringClasses(classCriteria)[0];

            monitorCriteria = new MonitorCriteria("DisplayName='Database Status'");

            monitor = mg.GetMonitors(monitorCriteria)[0];

            monitorOverride = new ManagementPackMonitorPropertyOverride(mp, "SampleMonitorOverride");

            monitorOverride.Monitor     = monitor;
            monitorOverride.Property    = ManagementPackMonitorProperty.Enabled;
            monitorOverride.Value       = "false";
            monitorOverride.Context     = monitoringClass;
            monitorOverride.DisplayName = "SampleMonitorOverride";

            mp.Verify();
            
            //Save the changes into the management pack.
            mp.AcceptChanges();
        }        
    }
}

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