Posted in
Windows Powershell,
Windows Server |
No Comment | 5,684 views | 30/01/2012 01:19
Check-WmiObject allows you to check Wmi provider/interface on given server.
I’m using this function in SetLinuxVM 3.0 to decide Hyper-V Manager.
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| # Check WMI Object
# Author: Yusuf Ozturk
# http://www.yusufozturk.info
function Check-WmiObject
{
param (
[Parameter(
Mandatory = $true,
HelpMessage = 'Wmi NameSpace. Example: root\virtualization')]
[string]$NameSpace,
[Parameter(
Mandatory = $false,
HelpMessage = 'Name of the Wmi Host. Example: Server01')]
[string]$WMIHost
)
$Success = "1";
if (!$WMIHost)
{
$CheckWmiObject = Get-WmiObject -Computer "." -Namespace "$NameSpace" -List -EA SilentlyContinue
if (!$CheckWmiObject)
{
Write-Debug "Could not contact with Wmi Provider."
}
else
{
Write-Debug "Wmi Provider is available."
$Success
}
}
else
{
$CheckWmiObject = Get-WmiObject -Computer "$WMIHost" -Namespace "$NameSpace" -List -EA SilentlyContinue
if (!$CheckWmiObject)
{
Write-Debug "Could not contact with Wmi Provider."
}
else
{
Write-Debug "Wmi Provider is available."
$Success
}
}
} |
# Check WMI Object
# Author: Yusuf Ozturk
# http://www.yusufozturk.info
function Check-WmiObject
{
param (
[Parameter(
Mandatory = $true,
HelpMessage = 'Wmi NameSpace. Example: root\virtualization')]
[string]$NameSpace,
[Parameter(
Mandatory = $false,
HelpMessage = 'Name of the Wmi Host. Example: Server01')]
[string]$WMIHost
)
$Success = "1";
if (!$WMIHost)
{
$CheckWmiObject = Get-WmiObject -Computer "." -Namespace "$NameSpace" -List -EA SilentlyContinue
if (!$CheckWmiObject)
{
Write-Debug "Could not contact with Wmi Provider."
}
else
{
Write-Debug "Wmi Provider is available."
$Success
}
}
else
{
$CheckWmiObject = Get-WmiObject -Computer "$WMIHost" -Namespace "$NameSpace" -List -EA SilentlyContinue
if (!$CheckWmiObject)
{
Write-Debug "Could not contact with Wmi Provider."
}
else
{
Write-Debug "Wmi Provider is available."
$Success
}
}
}
You can check Wmi Provider like this:
Check-WmiObject -NameSpace "root\virtualization" |
Check-WmiObject -NameSpace "root\virtualization"
If you want to query different wmi host:
Check-WmiObject -NameSpace "root\virtualization" -WmiHost "Server01" |
Check-WmiObject -NameSpace "root\virtualization" -WmiHost "Server01"
NameSpace is mandatory but you don’t need to type WmiHost if you query localhost.
If you want to use it in a script, you can check it like this:
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| $Test = Check-WmiObject -NameSpace "root\virtualization"
if (!$Test)
{
Write-Warning "Wmi Object is not available."
} |
$Test = Check-WmiObject -NameSpace "root\virtualization"
if (!$Test)
{
Write-Warning "Wmi Object is not available."
}
If checking is successful then you see “1” as output.
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