‘Image Not Found’ exception when trying to scale up – increase VMSS instances for a Service Fabric cluster

Issue:  ‘Image Not Found’ exception when trying to scale up – increase VMSS instances for a Service Fabric cluster. Cause:  ARM template should have this, which instructs to use the latest version of the image.  If the vmImageVersion is hard coded, then they may run into ‘Image Not Found’ problem.   “imageReference”: { “publisher”: “MicrosoftWindowsServer”, “offer”:…

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ClusterCodeVersion can only be changed when UpgradeMode is set to ‘Manual’

ISSUE: When trying to upgrade the Service Fabric Version, encountered the error “ClusterCodeVersion can only be changed when UpgradeMode is set to ‘Manual'” The UpgradeMode was set to Manual in the ARM template. We were still seeing the error. CAUSE: UpgradeMode is only supported in API Version 2016-09-01 and higher. Make sure that the API Version…

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Run the Azure worker role in elevated mode to register HttpListener

If you try to run RavenDB in Azure worker role (http://www.michaelhanley.org/blog/2011/12/ravendb-running-in-windows-azure.html#tpe-action-resize-486), it might fail with the following error. (You will need to attach a debugger to WaWorkerHost process to see this error message. Since its an handled exception, you do not see it in event logs) CLR exception type: System.Net.HttpListenerException “Access is denied”Error: StartRaven Error:…

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Using Windows Azure Caching for Session State can make the application slow if right programming practices are not followed

Recently, I worked on a case where my customer was using ReportingViewer 10.0 and Azure Caching for session state management. http://social.msdn.microsoft.com/Forums/en-US/windowsazuredata/thread/9100b52e-0d27-4788-92e3-e5f0accb3e89 The application was relatively slower when using Azure Caching for session state management compared to using local caching. After investigation, we determined that the session object was large. Since, Azure session management is done…

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Cloud drive can currently use only HTTP storage connection string

ISSUE:Azure worker role instance recycling. Trying to mount Azure cloud drive on role startup. Event logs showed the following error: Application: WaWokerHost.exeFramework Version: v4.0.30319Description: The process was terminated due to an unhandled exception.Exception Info: Microsoft.WindowsAzure.StorageClient.CloudDriveException Stack:   at Microsoft.WindowsAzure.CloudDrive.Interop.InteropCloudDrive.Mount(String url, SignatureCallBack sign, String mount, Int32 cacheSize, UInt32 flags)   at Microsoft.WindowsAzure.StorageClient.CloudDrive.MountAt(String location, Int32 cacheSize, DriveMountOptions options)   —…

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