In SharePoint 2010 service applications, the managed metadata service connection properties can be set using the cmdlet Get-SPMetadataServiceApplicationProxy
# Get Metadata service application proxy $metadataserviceapplicationname = "Managed Metadata Service" $metadataserviceapplicationproxy = get-spmetadataserviceapplicationproxy $metadataserviceapplicationname # This service application is the default storage location for Keywords. $metadataserviceapplicationproxy.Properties["IsDefaultKeywordTaxonomy"] = $true # This service application is the default storage location for column specific term sets. $metadataserviceapplicationproxy.Properties["IsDefaultSiteCollectionTaxonomy"] = $true # Consumes content types from the Content Type Gallery $metadataserviceapplicationproxy.Properties["IsNPContentTypeSyndicationEnabled"] = $false # Push-down Content Type Publishing updates from the Content Type Gallery # to sub-sites and lists using the content type. $metadataserviceapplicationproxy.Properties["IsContentTypePushdownEnabled"] = $true $metadataserviceapplicationproxy.Update()