Microsoft Azure Service Fabric 9.1 Release

Microsoft Azure Service Fabric 9.1 Release

Azure Service Fabric 9.1 Release is now available!

We are excited to announce that the 9.1 release of the Service Fabric runtime has started rolling out to the various Azure regions along with tooling and SDK updates. The updates for .NET SDK, Java SDK, and Service Fabric runtimes will be available through Web Platform Installer, NuGet packages, and Maven repositories in 7-10 days within all regions.


Key Announcements

  • Azure Service Fabric will block deployments that do not meet Silver or Gold durability requirements starting on 11/10/2022 (The date is extended from 10/30/2022 to 11/10/2022). Five VMs or more will be enforced with this change for newer clusters created after 11/10/2022 to help avoid data loss from VM-level infrastructure requests for production workloads. VM count requirement is not changing for Bronze durability. Enforcement for existing clusters will be rolled out in the coming months.
    For details see Durability characteristics of the cluster.
  • Azure Service Fabric node types with VMSS durability of Silver or Gold should always have the property "virtualMachineProfile.osProfile.windowsConfiguration.enableAutomaticUpdates" set to false in the scale set model definition. Setting enableAutomaticUpdates to false will prevent unintended OS restarts due to the Windows updates like patching, which can impact the production workloads.
    Instead, you should enable Automatic OS upgrades through VMSS OS Image updates by setting "enableAutomaticOSUpgrade" to true. With automatic OS image upgrades enabled on your scale set, an extra patching process through Windows Update is not required.
    For more information see: 
    VMSS Image Upgrades

Packages and Versions

  • Service Fabric Runtime
    • Ubuntu 18 - 9.1.1206.1
    • Ubuntu 20 - 9.1.1206.1
    • Windows - 9.1.1390.9590
  • Service Fabric for Windows Server
    • Service Fabric Standalone Installer Package - 9.1.1390.9590
  • .NET SDK
    • Windows .NET SDK - 6.1.1390
    • Microsoft.ServiceFabric - 9.1.1390
    • Reliable Services and Reliable Actors - 9.1.1390
    • ASP.NET Core Service Fabric integration - 9.1.1390
  • Java SDK
    • Java for Linux SDK - 1.0.6
  • Service Fabric PowerShell and CLI
    • AzureRM PowerShell Module - 0.3.15
    • SFCTL - 11.0.1


Breaking Change

BackupRestoreService: If a Service Fabric cluster has periodic backup enabled on any of the app/service/partition, post upgrade to 9.1.1390.9590, BRS will fail to deserialize old BackupMetadata. BRS will also stop taking backup and restore on the partition/service/app in question with changes in the new release even though the user app, cluster, and BRS shows healthy. Additional information regarding the breaking change is available in Release Notes


For more details, please read the release notes

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