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MSSQL 2016: Always On Seed Discovery

Microsoft.SQLServer.2016.AlwaysOn.AlwaysOnSeedDiscovery (Discovery)

This discovery is used to define which machines have Always On enabled.

Knowledge Base article:

Summary

Always On Seed Discovery

Overrideable Parameters

Name

Description

Default Value

Enabled

Enables or disables the workflow.

Yes

Frequency (seconds)

The recurring interval of time in seconds in which to run the workflow.

14400

Element properties:

TargetMicrosoft.SQLServer.2016.DBEngine
EnabledTrue
Frequency14400
RemotableFalse

Object Discovery Details:

Discovered Classes and their attribuets:

Member Modules:

ID Module Type TypeId RunAs 
DS DataSource Microsoft.Windows.FilteredRegistryDiscoveryProvider Default

Source Code:

<Discovery ID="Microsoft.SQLServer.2016.AlwaysOn.AlwaysOnSeedDiscovery" Enabled="true" Target="MicrosoftSQLServer2016Discovery!Microsoft.SQLServer.2016.DBEngine" ConfirmDelivery="false" Remotable="true" Priority="Normal">

  <Category>Discovery</Category>

  <DiscoveryTypes>

    <DiscoveryClass TypeID="Microsoft.SQLServer.2016.AlwaysOn.AlwaysOnSeed"/>

  </DiscoveryTypes>

  <DataSource ID="DS" TypeID="Windows!Microsoft.Windows.FilteredRegistryDiscoveryProvider">

    <ComputerName>$Target/Host/Property[Type="Windows!Microsoft.Windows.Computer"]/PrincipalName$</ComputerName>

    <RegistryAttributeDefinitions>

      <RegistryAttributeDefinition>

        <AttributeName>IsEnabled</AttributeName>

        <Path>SOFTWARE\Microsoft\Microsoft SQL Server\$Target/Property[Type="MicrosoftSQLServer2016Discovery!Microsoft.SQLServer.2016.DBEngine"]/InstanceID$\MSSQLServer\HADR\HADR_Enabled</Path>

        <PathType>1</PathType>

        <AttributeType>2</AttributeType>

      </RegistryAttributeDefinition>

    </RegistryAttributeDefinitions>

    <Frequency>14400</Frequency>

    <ClassId>$MPElement[Name="Microsoft.SQLServer.2016.AlwaysOn.AlwaysOnSeed"]$</ClassId>

    <InstanceSettings>

      <Settings>

        <Setting>

          <Name>$MPElement[Name="Microsoft.SQLServer.2016.AlwaysOn.AlwaysOnSeed"]/InstanceName$</Name>

          <Value>$Target/Property[Type="MicrosoftSQLServer2016Discovery!Microsoft.SQLServer.2016.ServerRole"]/InstanceName$</Value>

        </Setting>

        <Setting>

          <Name>$MPElement[Name="Windows!Microsoft.Windows.Computer"]/PrincipalName$</Name>

          <Value>$Target/Host/Property[Type="Windows!Microsoft.Windows.Computer"]/PrincipalName$</Value>

        </Setting>

        <Setting>

          <Name>$MPElement[Name="System!System.Entity"]/DisplayName$</Name>

          <Value>$Target/Property[Type="System!System.Entity"]/DisplayName$ Always On Seed</Value>

        </Setting>

      </Settings>

    </InstanceSettings>

    <Expression>

      <SimpleExpression>

        <ValueExpression>

          <XPathQuery Type="Integer">Values/IsEnabled</XPathQuery>

        </ValueExpression>

        <Operator>Equal</Operator>

        <ValueExpression>

          <Value Type="Integer">1</Value>

        </ValueExpression>

      </SimpleExpression>

    </Expression>

  </DataSource>

</Discovery>