I haven't really done any Windows scripting at all, so I am at a loss on how to pull this one off. Anyway, basically what we want to do is have a script that will take an argument on which IIS AppPool to recycle. I have done some research on Google and haven't had much success on getting things to work.
Here is what I am trying now:
$appPoolName = $args[0]
$appPool = get-wmiobject -namespace "root\MicrosoftIISv2" -class "IIsApplicationPools" Where-Object {$_.Name -eq "W3SVC/APPPOOLS/$appPoolName"}
$appPool.Recycle()
and the error I get:
Get-WmiObject : A parameter cannot be found that matches parameter name '$_.Name -eq "W3SVC/APPPOOLS/$appPoolName"'.
Anyway, it would be nice if I also knew how to debug things like this. I already fixed one bug with the original script by doing gwmi -namespace "root\MicrosoftIISv2" -list. Any other tips like that one would be great.
Thanks!
Update: Here is some more info
$appPool = gwmi -namespace "root\MicrosoftIISv2" -class "IISApplicationPools" | Get-Member
. TypeName: System.Management.ManagementObject#root\MicrosoftIISv2\IIsApplicationPools
Name MemberType Definition
---- ---------- ----------
Caption Property System.String Caption {get;set;}
Description Property System.String Description {get;set;}
InstallDate Property System.String InstallDate {get;set;}
Name Property System.String Name {get;set;}
Status Property System.String Status {get;set;}
__CLASS Property System.String __CLASS {get;set;}
__DERIVATION Property System.String[] __DERIVATION {get;set;}
__DYNASTY Property System.String __DYNASTY {get;set;}
__GENUS Property System.Int32 __GENUS {get;set;}
__NAMESPACE Property System.String __NAMESPACE {get;set;}
__PATH Property System.String __PATH {get;set;}
__PROPERTY_COUNT Property System.Int32 __PROPERTY_COUNT {get;set;}
__RELPATH Property System.String __RELPATH {get;set;}
__SERVER Property System.String __SERVER {get;set;}
__SUPERCLASS Property System.String __SUPERCLASS {get;set;}
ConvertFromDateTime ScriptMethod System.Object ConvertFromDateTime();
ConvertToDateTime ScriptMethod System.Object ConvertToDateTime();
Delete ScriptMethod System.Object Delete();
GetType ScriptMethod System.Object GetType();
Put ScriptMethod System.Object Put();
gwmi -namespace "root\MicrosoftIISv2" -class "IISApplicationPools"
__GENUS : 2
__CLASS : IIsApplicationPools
__SUPERCLASS : CIM_LogicalElement
__DYNASTY : CIM_ManagedSystemElement
__RELPATH : IIsApplicationPools.Name="W3SVC/AppPools"
__PROPERTY_COUNT : 5
__DERIVATION : {CIM_LogicalElement, CIM_ManagedSystemElement}
__SERVER : IRON
__NAMESPACE : root\MicrosoftIISv2
__PATH : \\IRON\root\MicrosoftIISv2:IIsApplicationPools.Name="W3SVC/A
ppPools"
Caption :
Description :
InstallDate :
Name : W3SVC/AppPools
Status :
Where-Object is a filter that expects something as in input. There seems to be a missing pipe, before the where filter.
Try:
$appPoolName = $args[0]
$appPool = get-wmiobject -namespace "root\MicrosoftIISv2" -class "IIsApplicationPool" | Where-Object {$_.Name -eq "W3SVC/APPPOOLS/$appPoolName"}
$appPool.Recycle()
Edit: I noticed that the WMI class was IISApplicationPools, which as you saw, did not show us the Recycle method when piped to Get-Member. This needs to be changed to IISApplicationPool (non-plural). With that change, you are able to use the Recycle method. The code above has been updated.
Using the data from this question I was able to create 2 very useful functions.
- Get-IisAppPools
- Recycle-IisAppPool
The code:
function Get-IisAppPools {
Get-WmiObject -Namespace "root\MicrosoftIISv2" -Class "IIsApplicationPool" -Filter 'name like "W3SVC/APPPOOLS/%"'
| ForEach-Object { $_.Name.ToString().SubString(15) }
}
function Recycle-IisAppPool([string]$appPoolName) {
Invoke-WmiMethod -Name Recycle -Namespace "root\MicrosoftIISv2" -Path "IIsApplicationPool.Name='W3SVC/APPPOOLS/$appPoolName'"
}
You can use these functions like this
Recycle-IisAppPool DefaultAppPool
Get-IisAppPools | ? { $_ -match "v4.0$" } | % { Recycle-IisAppPool $_ }
When using get-WMIObject you should probably use -filter instead of piping to Where-Object. the filter parameter uses WQL syntax language instead of PowerShell's, so don't let that trip you up.
$appPoolName = $args[0]
$appPool = get-wmiobject -namespace "root\MicrosoftIISv2" -class "IIsApplicationPools" -filter 'name="W3SVC/APPPOOLS/$appPoolName"'
Having said that putting the pipe there should work, and certainly makes it easier to work with unless you already know WQL.
This isn't a Powershell-specific answer, but iisapp.vbs will list the running application pools, and there is a /r flag to recycle a specific app pool.
You can also use a WQL query to get just the AppPool you want; this has the advantage of filtering the results on the WMI side, which is especially handy when getting objects from a remote machine.
(Get-WmiObject -Query "SELECT * FROM IIsApplicationPool WHERE Name = 'W3SVC/AppPools/$appPoolName'" -Namespace 'root\MicrosoftIISv2').Recycle()
With IIS 8.0 I've found I had to use -namespace root\webadministration -class ApplicationPool
For example, to recycle an Application Pool in IIS 8 remotely using PowerShell:
As always, please test this first by listing the application pools. Just remove the | where and the first ( from the command:
gwmi -comp WebServer01 -namespace root\webadministration -class ApplicationPool
#Recycle app pool by name.
(gwmi -comp WebServer01 -namespace root\webadministration -class ApplicationPool | `
where {$_.Name -eq 'YourAppPool'}).recycle()
And on one line:
(gwmi -comp WebSserver01 -namespace root\webadministration -class ApplicationPool | where {$_.Name -eq 'YourAppPool'}).recycle()
In Powershell:
$pool = Get-IISAppPool -Name <name>
$pool.recycle()
来源：https://stackoverflow.com/questions/198623/how-do-i-recycle-an-iis-apppool-with-powershell