IIS 7 - change the allowDefinition attribute for a config section in machine.config

Question

We have a situation where we need to explicitly limit the system.web/processModel/maxAppDomains = 1 for one website. The problem is that system.web/processModel can only be set at the machine.config level by default:

<configuration>
    <configSections>
        <sectionGroup name="system.web">
            <section name="processModel" allowDefinition="MachineOnly" />
        </sectionGroup>
   </configSections>
<configuration>

I know that %windir%/system32/inetsvr/appcmd.exe can be used to update IIS config settings, but I haven't found a way to update the allowDefinition attribute of the processModel section definition. Can anyone point me in the right direction here?

Thanks

just to be clear... you know how to set the process model section for a specific site, but you're trying to find a scripted way to modify allowDefinition="blahblah" so that your per-site settings will work? — explunit, Mar 22 '13 at 18:59

score 1 · Accepted Answer · answered Mar 24 '13 at 15:37

using WMI provider:

' SetAllowDefinition is a static method, you should call it by getting a class object, as in the following example  
Set oAnonAuth = oWebAdmin.Get("AnonymousAuthenticationSection")
oAnonAuth.SetAllowDefinition "MachineOnly"

based on my understanding, i think you are intersted in setting AllowDefinition to [AppHostOnly] or [MachineToApplication] values.

ref:http://msdn.microsoft.com/en-us/library/bb386461(v=vs.90).aspx

note: Changes to the ProcessModelSection class take effect only when the worker process is restarted, not immediately after the setting is changed.

i used the following code to set maxAppDomain=1 to the current web app "but you can change it for any .config file by providing the path"

System.Configuration.Configuration configuration = WebConfigurationManager.OpenWebConfiguration("");
            System.Web.Configuration.ProcessModelSection processModelSection =
                        (ProcessModelSection)configuration.GetSection("system.web/processModel");
            processModelSection.MaxAppDomains = 1;

hope that's help, yet i had to assume couple of things since the question requirements need further clarifications.

score 0 · Answer 2 · answered Mar 25 '13 at 23:45

0

Have you tried editing the machine.config file directly? Every time I've run into issues with the machine.config file I've just edited the file directly.

answered Mar 25 '13 at 23:45

Techie Joe

327
2
9

The problem is that we need to do this as part of a deployment, so automating it in some way is our preferred option. – scripni Apr 30 '13 at 11:09

IIS 7 - change the allowDefinition attribute for a config section in machine.config

2 Answers2