How to Create an Override for a Discovery

Updated: January 31, 2012

Applies To: System Center 2012 - Operations Manager

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

Only the Enabled property can be overridden for discoveries. To figure out which parameters can be overridden, you must look at the definition of the discovery in the management pack that defines the discovery. All the parameters that can be overridden are defined in the OverrideableParameters element of the discovery. You can also call the method to get the list of parameters programmatically.

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

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;
			ManagementPackClassCriteria					 classCriteria;
			ManagementPackClass monitoringClass;
			ManagementPackDiscoveryCriteria discoveryCriteria;
			ManagementPackDiscovery discovery;
			ManagementPackDiscoveryPropertyOverride	 discoveryOverride;

			mg = new ManagementGroup("localhost");

			mp = mg.ManagementPacks.GetManagementPacks(new ManagementPackCriteria("Name='OverrideTestMP'"))[0];

			classCriteria = new ManagementPackClassCriteria("Name='Microsoft.SQLServer.2005.DBEngine'");

			monitoringClass = mg.EntityTypes.GetClasses(classCriteria)[0];

			discoveryCriteria = new ManagementPackDiscoveryCriteria("Name='Microsoft.SQLServer.2005.DatabaseDiscoveryRule'");

			discovery = mg.Monitoring.GetDiscoveries(discoveryCriteria)[0];

			discoveryOverride = new ManagementPackDiscoveryPropertyOverride(mp, "SampleDiscoveryOverride");

			discoveryOverride.Discovery	 = discovery;
			discoveryOverride.Property	= ManagementPackWorkflowProperty.Enabled;
			discoveryOverride.Value		 = "false";
			discoveryOverride.Context	 = monitoringClass;
			discoveryOverride.DisplayName   = "SampleDiscoveryOverride";

			//Save the changes into the management pack.

See Also