Difference between revisions of "Euler maintenance (September 2017)"

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(Created page with "CSCS informed us that the data centre will be undergoing maintenance on '''Wednesday, 27 September 2017''', which will require a '''complete shutdown''' of Euler. We will tak...")
 
(Reduced down time due to staged migration.)
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CSCS informed us that the data centre will be undergoing maintenance on '''Wednesday, 27 September 2017''', which will require a '''complete shutdown''' of Euler.
 
CSCS informed us that the data centre will be undergoing maintenance on '''Wednesday, 27 September 2017''', which will require a '''complete shutdown''' of Euler.
  
We will take this opportunity to do some major maintenance on Euler itself the days '''before''' and '''after''' the CSCS maintenance. In particular, we will '''upgrade Euler I and II to CentOS 7''' (like Euler III) and '''prepare the installation of Euler IV''' later this year.
+
We will take this opportunity to do some major maintenance on Euler itself the days '''before''' and '''after''' the CSCS maintenance. In particular, we will complete the '''upgrade Euler I and II to CentOS 7''' (like Euler III) and '''prepare for the installation of Euler IV''' later this year.
  
As a consequence:
+
As a consequence we plan that:
  
* '''Euler I and II''' will be off-line from '''Monday 25 to Friday 29''' September — ''the whole week!''
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* '''Euler compute nodes, login nodes, and storage system''' will be off-line from the afternoon of '''Tuesday 26 through Thursday 28''' September''; we will do out best to bring them back on-line ASAP''
* '''Euler III''' will be off-line '''Wednesday 27 and Thursday 28''' September — ''two days; we will do out best to bring it back on-line ASAP''
 
  
 
The exact times will be coordinated with CSCS and communicated here and by email in the weeks prior to the maintenance.
 
The exact times will be coordinated with CSCS and communicated here and by email in the weeks prior to the maintenance.
 
Although Euler will be operational Monday 25, Tuesday 26 and Friday 29, its computing capacity will be '''severely limited'''. Only jobs that can fit in Euler III nodes (4 cores, 32 GB RAM max) will be able to run during this time. All other jobs will be held in the queue until the end of the week.
 
 
The cluster's '''login nodes''' and '''storage systems''' will remain operational at the same time as '''Euler III''' and '''will not be accessible''' Wednesday 27 and Thursday 28.
 
  
 
As usual, batch queues will be progressively inactivated in the days and hours prior to the maintenance, to ensure that no jobs get killed when the cluster is shut down.
 
As usual, batch queues will be progressively inactivated in the days and hours prior to the maintenance, to ensure that no jobs get killed when the cluster is shut down.
 
  
 
''Sorry for the inconvenience.''
 
''Sorry for the inconvenience.''

Revision as of 11:58, 29 August 2017

CSCS informed us that the data centre will be undergoing maintenance on Wednesday, 27 September 2017, which will require a complete shutdown of Euler.

We will take this opportunity to do some major maintenance on Euler itself the days before and after the CSCS maintenance. In particular, we will complete the upgrade Euler I and II to CentOS 7 (like Euler III) and prepare for the installation of Euler IV later this year.

As a consequence we plan that:

  • Euler compute nodes, login nodes, and storage system will be off-line from the afternoon of Tuesday 26 through Thursday 28 September; we will do out best to bring them back on-line ASAP

The exact times will be coordinated with CSCS and communicated here and by email in the weeks prior to the maintenance.

As usual, batch queues will be progressively inactivated in the days and hours prior to the maintenance, to ensure that no jobs get killed when the cluster is shut down.

Sorry for the inconvenience.