Get node availability using Powershell

Mon, 22 Jun 2009 18:48:09 Z

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

Get node availability using Powershell

Tue, 23 Jun 2009 02:07:06 Z

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.

Get node availability using Powershell

Tue, 23 Jun 2009 03:20:11 Z

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

Get node availability using Powershell

Sun, 05 Jul 2009 17:36:07 Z

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.