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Working with Service Applications
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Windows PowerShell provides many cmdlets for managing service applications To demonstrate their use, we ll create a service application and then configure some of its properties
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As an example, we will create a managed metadata service application using Windows PowerShell First, we need to make sure that the service instance corresponding to the managed metadata service application is online A service instance is the heart of a service application It is a logical entity that contains information about the service binaries and other components such as timer jobs and related services that are required for the service application to function You can view the service instances available in a farm using the Get-SPServiceInstance cmdlet If you want to see a specific service instance, you can pipe the objects returned from the Get-SPServiceInstance cmdlet to the Where-Object cmdlet and filter on a specific property In this example, we display the managed metadata Web service:
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PS > Get-SPServiceInstance | >> Where-Object {$_TypeName -eq "Managed Metadata Web Service"} | >> Format-Table -Property TypeName, Status -AutoSize TypeName Status ------------Managed Metadata Web Service Disabled
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Managing Service Applications
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This example displays the TypeName and Status properties using the Format-Table cmdlet The status can be either Online or Disabled If the status appears as Disabled, you can start a service instance using the Start-SPServiceInstance cmdlet Here, we start the managed metadata Web service instance:
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PS > Get-SPServiceInstance | >> Where-Object {$_TypeName -eq "Managed Metadata Web Service"} | >> Start-SPServiceInstance
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Some service applications are completely internal to SharePoint 2010, but most expose some of their functionality to developers or other system components as a WCF Web service These applications run in the context of associated IIS application pools Application pools are used to consolidate IIS virtual servers or directories that share the same configuration This means that multiple service applications can share the same application pool Here s how to discover which application pools the various service applications run within:
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PS >> >> >> >> > Get-SPServiceApplication | Select-Object -Property Name, @{Name="AppPool"; Expression={ if ($_ApplicationPool) {$_ApplicationPoolName} else {"N/A"}} }
When creating a new service application, you can use an existing application pool or create a new one You can display the available application pools used for service applications using the Get-SPServiceApplicationPool cmdlet To create a new application pool for a service application, use the NewSPServiceApplicationPool cmdlet The cmdlet requires two input parameters: the new application pool s name and a managed account that will be used as the identity for the application pool process The following example demonstrates how to create a new application pool
PS > New-SPServiceApplicationPool -Name "Metadata AppPool" ` >> -account (Get-SPManagedAccount "powershell\managedaccount")
SharePoint 2010 includes a number of cmdlets to create new service applications of a specific type You can find out the names of these cmdlets by typing the following:
PS > Get-Command -Verb New -Noun *ServiceApplication | >> Select-Object -Property Name
Since we are creating a managed metadata service application, we will use the
New-SPMetadataServiceApplication cmdlet
PS > New-SPMetadataServiceApplication -Name "MetadataServiceApp" ` >> -ApplicationPool (Get-SPServiceApplicationPool "Metadata AppPool") ` >> -DatabaseName "MetaDataDB01"
PowerShell for Microsoft SharePoint 2010 Administrators
NOTE Depending on the type of service application you are creating, other parameters might be required Use the Get-Help cmdlet to find out which parameters a specific cmdlet expects A service application also requires a service application proxy A service application proxy is a logical object used to associate a Web application instance with a service application instance Without a service application proxy, a Web application will not be able to communicate with a service application To create a new service application proxy for our metadata service application, we use the NewSPMetadataServiceApplicationProxy cmdlet
PS > New-SPMetaDataServiceApplicationProxy -Name "Metadata Service App Proxy" ` >> -ServiceApplication (Get-SPServiceApplication -Name "MetadataServiceApp")
Service application proxies are not connected to Web applications directly, but rather through an application proxy group When a new farm is provisioned, a default service application proxy group is created, and all new Web applications are associated with this group by default You can assign the service application proxy to the default group by adding the DefaultProxyGroup switch parameter to the NewSPMetaDataServiceApplicationProxy cmdlet Alternatively, you can assign it to a specific proxy group later, as demonstrated here:
PS > Add-SPServiceApplicationProxyGroupMember -Identity "Workspaces" ` >> -Member (Get-SPServiceApplicationProxy | >> Where-Object { $_DisplayName -eq "Metadata Service App Proxy" })
Figure 18-1 shows how the configuring of service application associations looks in Central Administration
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