Question

我们的生产网络应用程序存在一个非常奇怪的问题。我们的Web应用程序是面向外部的，并使用DMZ帐户模拟应用程序池标识。但是随机我们看到我们的应用程序在用户尝试登录应用程序时崩溃。我们得到一个例外，如下所示 -

正如您所看到的那样，当调用authenticate方法时，我们会收到失败消息：

经过身份验证：错误验证类型：
线程帐户名称：DMZ帐户

似乎SQL Server不允许asp.net应用程序池标识随机连接，这是DMZ帐户。现在这种情况间歇性地发生，并非总是如此。 asp.net应用程序模拟为池标识，但它通过SQL登录连接到SQL Server。

最奇怪的是，如果我们从Visual Studio连接到生产服务器，它连接到相同的生产SQL Server确定，生产站点神奇地开始工作！它几乎就像Visual Studio假冒的本地域帐户解锁了生产DMZ帐户一样。

Exception information: 
    Exception type: NullReferenceException 
    Exception message: Object reference not set to an instance of an object.
   at eCertsFormsAdmin.ControllerBase.OnException(ExceptionContext filterContext)
   at System.Web.Mvc.ControllerActionInvoker.InvokeExceptionFilters(ControllerContext controllerContext, IList`1 filters, Exception exception)
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass25.<BeginInvokeAction>b__22(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult)
   at System.Web.Mvc.Controller.<>c__DisplayClass1d.<BeginExecuteCore>b__18(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar)
   at System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar)
   at System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult)
   at System.Web.Mvc.MvcHandler.<>c__DisplayClass8.<BeginProcessRequest>b__3(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar)
   at System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult)
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)



Request information: 
    Request URL: https://appurl:443/Home/Authenticate?param={'AccessCode' :'demo', 'UserName' :'user'} 
    Request path: /Home/Authenticate 
    User host address: web server ip address 
    User:  
    Is authenticated: False 
    Authentication Type:  
    Thread account name: DMZ account 

Thread information: 
    Thread ID: 5 
    Thread account name: DMZ account
    Is impersonating: True 
    Stack trace:    at eCertsFormsAdmin.ControllerBase.OnException(ExceptionContext filterContext)
   at System.Web.Mvc.ControllerActionInvoker.InvokeExceptionFilters(ControllerContext controllerContext, IList`1 filters, Exception exception)
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass25.<BeginInvokeAction>b__22(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult)
   at System.Web.Mvc.Controller.<>c__DisplayClass1d.<BeginExecuteCore>b__18(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar)
   at System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar)
   at System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult)
   at System.Web.Mvc.MvcHandler.<>c__DisplayClass8.<BeginProcessRequest>b__3(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar)
   at System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult)
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)


Custom event details: 

Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="ASP.NET 4.0.30319.0" />
    <EventID Qualifiers="32768">1309</EventID>
    <Level>3</Level>
    <Task>3</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2017-03-28T13:56:18.000000000Z" />
    <EventRecordID>425417</EventRecordID>
    <Channel>Application</Channel>
    <Computer>Web server</Computer>
    <Security />
  </System>
  <EventData>
    <Data>3005</Data>
    <Data>An unhandled exception has occurred.</Data>
    <Data>3/28/2017 9:56:18 AM</Data>
    <Data>3/28/2017 1:56:18 PM</Data>
    <Data>3accff4bebb74aa5823c9d05fe7ae5c0</Data>
    <Data>135</Data>
    <Data>4</Data>
    <Data>0</Data>
    <Data>/LM/W3SVC/6/ROOT-1-131351820594338174</Data>
    <Data>Full</Data>
    <Data>/</Data>
    <Data>C:\www\apppath\</Data>
    <Data>Web server</Data>
    <Data>
    </Data>
    <Data>6768</Data>
    <Data>w3wp.exe</Data>
    <Data>GTSDMZ\eValid</Data>
    <Data>NullReferenceException</Data>
    <Data>Object reference not set to an instance of an object.
   at eCertsFormsAdmin.ControllerBase.OnException(ExceptionContext filterContext)
   at System.Web.Mvc.ControllerActionInvoker.InvokeExceptionFilters(ControllerContext controllerContext, IList`1 filters, Exception exception)
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.&lt;&gt;c__DisplayClass25.&lt;BeginInvokeAction&gt;b__22(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult)
   at System.Web.Mvc.Controller.&lt;&gt;c__DisplayClass1d.&lt;BeginExecuteCore&gt;b__18(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.&lt;&gt;c__DisplayClass4.&lt;MakeVoidDelegate&gt;b__3(IAsyncResult ar)
   at System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.&lt;&gt;c__DisplayClass4.&lt;MakeVoidDelegate&gt;b__3(IAsyncResult ar)
   at System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult)
   at System.Web.Mvc.MvcHandler.&lt;&gt;c__DisplayClass8.&lt;BeginProcessRequest&gt;b__3(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.&lt;&gt;c__DisplayClass4.&lt;MakeVoidDelegate&gt;b__3(IAsyncResult ar)
   at System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult)
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean&amp; completedSynchronously)

</Data>
    <Data>https://appurl:443/Home/Authenticate?param={'AccessCode' :'demo', 'UserName' :'user', }</Data>
    <Data>/Home/Authenticate</Data>
    <Data>server ip</Data>
    <Data>
    </Data>
    <Data>False</Data>
    <Data>
    </Data>
    <Data>DMZ account</Data>
    <Data>5</Data>
    <Data>DMZ account</Data>
    <Data>True</Data>
    <Data>   at OurApp.ControllerBase.OnException(ExceptionContext filterContext)
   at System.Web.Mvc.ControllerActionInvoker.InvokeExceptionFilters(ControllerContext controllerContext, IList`1 filters, Exception exception)
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.&lt;&gt;c__DisplayClass25.&lt;BeginInvokeAction&gt;b__22(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult)
   at System.Web.Mvc.Controller.&lt;&gt;c__DisplayClass1d.&lt;BeginExecuteCore&gt;b__18(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.&lt;&gt;c__DisplayClass4.&lt;MakeVoidDelegate&gt;b__3(IAsyncResult ar)
   at System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.&lt;&gt;c__DisplayClass4.&lt;MakeVoidDelegate&gt;b__3(IAsyncResult ar)
   at System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult)
   at System.Web.Mvc.MvcHandler.&lt;&gt;c__DisplayClass8.&lt;BeginProcessRequest&gt;b__3(IAsyncResult asyncResult)
   at System.Web.Mvc.Async.AsyncResultWrapper.&lt;&gt;c__DisplayClass4.&lt;MakeVoidDelegate&gt;b__3(IAsyncResult ar)
   at System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult)
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean&amp; completedSynchronously)
</Data>
  </EventData>
</Event>

我们的环境：

Windows 2008 R2 Enterprise IIS 7.5 Web服务器位于DMZ

从Web服务器到SQL Server的DMZ帐户应用程序池标识

0 个答案: