How to change the IIS log contents with PowerShell

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Added by Jason Helmick March 1, 2013

Ever want to change the type of information contained in your IIS logs?  While the default settings are useful, there’s much more data you could be collecting.  Graphical you can do this on a per server bases in the “Logging” feature and selecting the “Select Fields” option.

My problem is that I want to set this on several web servers. You can do this using PowerShell Remoting and the Set-WebConfigurationProperty cmdlet from the WebAdministration module.

To get a list of the current fields:

PS> $Session=New-PsSession –ComputerName Web1, Web2, Web3

PS> Invoke-Command –Session $Session {

Get-WebConfiguration –filter system.applicationhost/sites/sitedefaults/logfile |

Select-Object -ExpandProperty logExtFileFlags }

To change the list using the same Remoting session:

Invoke-Command –Session $session {

Set-WebConfigurationProperty -Filter System.Applicationhost/Sites/SiteDefaults/logfile -Name LogExtFileFlags -Value “Date,Time,ClientIP”}

Have fun!

Knowledge is PowerShell

Jason

Jason Helmick
Director of PowerShell Technologies
Interface Technical Training