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AnswerGet node availability using Powershell

  • Monday, June 22, 2009 6:48 PMwillvv Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    Hi

    I need to obtain the node availability information for a cluster using powershell, is there a way to get that information?

    The information I need is the same that appears on the HPC Cluster Manager, under Charts and Reports - Reports - Node Availability.

    I thought maybe the Export-HPCMetrics command would work, but it doesn't have that information.

    Thanks
     

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  • Tuesday, June 23, 2009 2:07 AMZhen WEI MSFT Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
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    In V2 (Windows HPC Server 2008) the answer is yes with some dev work. You can get node's Added/Removed/Online/Offline/Reachable/Unreachable/Draining state change history from Get-HpcNodeStateHistory cmdlet, and then put together the node availability. If you are interested in the "Available" definition in HPC Server, it means a node is "Online" and "Reachable". So there is somehow tricky formula like

    sum(TheTimeANodeBecomesUnavailable - TheTimeANodeBecomesAvailable) / sum(TheTimeANodeIsRemoved - TheTimeANodeIsAdded)

    In V3 (Windows HPC Server 2008 R2) we are considering expose the hourly aggregated node availability data though reporting database view.

    Feel free to let us know if you have further questions. Thanks.

    • Proposed As Answer byZhen WEI MSFT Tuesday, June 23, 2009 2:07 AM
    • Marked As Answer bywillvv Tuesday, June 23, 2009 3:19 AM
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  • Tuesday, June 23, 2009 2:07 AMZhen WEI MSFT Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
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    In V2 (Windows HPC Server 2008) the answer is yes with some dev work. You can get node's Added/Removed/Online/Offline/Reachable/Unreachable/Draining state change history from Get-HpcNodeStateHistory cmdlet, and then put together the node availability. If you are interested in the "Available" definition in HPC Server, it means a node is "Online" and "Reachable". So there is somehow tricky formula like

    sum(TheTimeANodeBecomesUnavailable - TheTimeANodeBecomesAvailable) / sum(TheTimeANodeIsRemoved - TheTimeANodeIsAdded)

    In V3 (Windows HPC Server 2008 R2) we are considering expose the hourly aggregated node availability data though reporting database view.

    Feel free to let us know if you have further questions. Thanks.

    • Proposed As Answer byZhen WEI MSFT Tuesday, June 23, 2009 2:07 AM
    • Marked As Answer bywillvv Tuesday, June 23, 2009 3:19 AM
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  • Tuesday, June 23, 2009 3:20 AMwillvv Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    Thanks for your answer, I guess I'll have to do that...

    And what do you mean by "through reporting database view"? is there any reporting db that I can access directly from code?

    Thanks
     
  • Sunday, July 05, 2009 5:36 PMZhen WEI MSFT Users MedalsUsers MedalsUsers MedalsUsers MedalsUsers Medals
     
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    Yes, we are considering to expose a reporting database view schema of SQL Server, so that you can query it from any SQL client, including your code of course.