I’ve been working with System Center Configuration Manager this week. SCCM uses a lot of WMI. However, WMI discovery is still a bit of an art.
I needed to find the SMS_SCI_Component class.
If you know the namespace you can easily find the classes in that namespace but namespaces are hierarchical so you need to work down the tree.
The root namespace is at the top of the namespace tree so
C:\Scripts> Get-CimInstance -ClassName __NAMESPACE -Namespace root
Name
—-
subscription
DEFAULT
SCCMDP
CIMV2
msdtc
Cli
nap
MicrosoftIISv2
SECURITY
CCMVDI
NetworkModel
RSOP
SMS
ccm
StandardCimv2
WMI
AccessLogging
directory
Policy
InventoryLogging
Interop
Hardware
ServiceModel
Microsoft
aspnet
After a bit of digging I found I needed the sms namespace
PS C:\Scripts> Get-CimInstance -ClassName __NAMESPACE -Namespace ‘root\sms’
Name
—-
site_PS1
which leads to:
Get-CimInstance -ClassName SMS_SCI_Component -Namespace ‘root\sms\site_PS1’
What if you only know the class?
There’s a little trick using Get-WmiObject
Get-WmiObject -Namespace root -Recurse -List -Class SMS_SCI_Component
NameSpace: ROOT\SMS\site_PS1
Name
—-
SMS_SCI_Component
The trick is to start with the root namespace and use the –Recurse (search through all child namespaces) and –List (just give class details) parameters. You’ll see a listing by namespace for each instance of the class discovered.
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