I cannot start Azure Diagnostic Monitor

Question

I'm trying to test the Azue diagnostic monitor in a cloud solution with a single asp.net application.

I get an exception every time I try to start the diagnostics monitor:

        CloudStorageAccount account = CloudStorageAccount.Parse("UseDevelopmentStorage=true");

        Write(account.TableEndpoint.AbsoluteUri);

        // Get default initial configuration.
        var config = DiagnosticMonitor.GetDefaultInitialConfiguration();

        config.Logs.ScheduledTransferLogLevelFilter = LogLevel.Undefined;
        config.Logs.ScheduledTransferPeriod = TimeSpan.FromSeconds(5);

        // Start the diagnostic monitor with the modified configuration.
        DiagnosticMonitor.Start(account, config); // Exception

The exception says:

System.ArgumentException was unhandled by user code
  Message=Directory C:\Users\Me\Documents\Visual Studio 2010\Projects\CloudDebuggingTest\CloudDebuggingTest\bin\Debug\CloudDebuggingTest.csx\roles\CloudDebuggingTest.Web\diagnostics\x64\monitor does not exist.
  Source=Microsoft.WindowsAzure.Diagnostics
  StackTrace:
       at Microsoft.WindowsAzure.Diagnostics.DiagnosticMonitor.ValidateStartupInfo(DiagnosticMonitorStartupInfo startupInfo) in :line 0
       at Microsoft.WindowsAzure.Diagnostics.DiagnosticMonitor.StartWithExplicitConfiguration(DiagnosticMonitorStartupInfo startupInfo, DiagnosticMonitorConfiguration initialConfiguration) in :line 0
       at Microsoft.WindowsAzure.Diagnostics.DiagnosticMonitor.Start(CloudStorageAccount storageAccount, DiagnosticMonitorConfiguration initialConfiguration) in :line 0
       at CloudDebuggingTest.Web._Default.StartDiagnostics() in C:\Users\Me\Documents\Visual Studio 2010\Projects\CloudDebuggingTest\CloudDebuggingTest.Web\Default.aspx.cs:line 48
       at CloudDebuggingTest.Web._Default.Page_Load(Object sender, EventArgs e) in C:\Users\Me\Documents\Visual Studio 2010\Projects\CloudDebuggingTest\CloudDebuggingTest.Web\Default.aspx.cs:line 19
       at System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e)
       at System.Web.UI.Control.LoadRecursive()
       at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
  InnerException: 

I have no idea about what am I missing, I've been checking out some links and they do exactly this. Any idea?

Cheers.

Answer 1

This has to be kidding me :|

The problem is that the path is too long, I moved the project to D:\ and then it's working fine @.@

I found the solution by chance, when I step into an article talking about limitations in path length.

http://markegilbert.wordpress.com/2010/11/05/i-just-hit-my-head-on-a-cloud-microsoft-azure-and-full-path-limits/

I hit my head too :(

Answer 2

I'm not sure about this particular problem.

However, one thing that might help, is that it's unusual to start the Diagnostics in Page_Load - it's much more typical to start in the Role Start method.

Also, I would not recommend using a period as short as 5 seconds for transferring your log files - an hour or more is normally more suitable (although I understand that this setting is just there at the moment to help with your testing!)