All systems related announcements of both a critical and non-critical nature are posted here. This includes disruptions of network connectivity, scheduled and unscheduled maintenance of servers, changes in resources and services, upgrades to software and the availability of new software.

Dropbox drops support for CentOS

October 10, 2018

Unfortuntely Dropbox has seen fit to drop support for CentOS 7, and is dropping support for xfs filesystems, which is what we use (and the default on CentOS 7).

The possibility of reformatting /scratch as ext4 was discussed, but unfortunately the new requirements also indicate that glibc 2.19 or higher is required. This would seem to disqualify CentOS 7 since it is distributed with glibc 2.17. So simply changing /scratch to ext4 would not be enough.

As a workaround, one could try rclone. Unlike the Dropbox app, rclone isn't a daemon that looks for file changes so it can sync them automatically. One would have to run rclone as a cronjob. If you decide to go this route, please run the cronjob on your desktop machine.

Another solution might be to switch to Google drive and use rclone with that.

For information on how to get rclone working with Dropbox or Google drive, see the rclone Dropbox documentation or the rclone Google Drive documentation.

For information and an example  on how to set up and configure rclone here at Courant, see Setting up rclone at Courant.

Linux reboots and updates

Linux compute nodes and desktop machines will be rebooted on Thursday, August 23rd for software and security updates. This includes both RHEL 6 and CentOS 7 systems. Updates will be applied to machines between 7:00 pm and midnight. In an effort to try and minimize any corrupted files or lost work, please save all your data and log out of any Linux systems before 7:00 pm. Account maintenance will also occur during this time period, so please remain logged out of all Courant systems during this time frame.

The following is a list of machines that already have the updates, so you may test any critical packages or code beforehand:

  • pubbox49.cims.nyu.edu
  • pubbox40.cims.nyu.edu
  • pubbox42.cims.nyu.edu
  • pubbox28.cims.nyu.edu
  • pubbox31.cims.nyu.edu
  • pubbox32.cims.nyu.edu
  • pubbox37.cims.nyu.edu
  • pubbox47.cims.nyu.edu
  • pubbox38.cims.nyu.edu
  • pubbox39.cims.nyu.edu
  • pubbox48.cims.nyu.edu
  • pubbox53.cims.nyu.edu
  • pubbox52.cims.nyu.edu

CIMS Desktops Unable to Login: Resolved

2018/01/19 12:00 p.m.

CIMS desktop logins should be restored now. Thanks for your patience!

2018/01/19 10:45 a.m. We're currently experiencing issues with logins and applications on CIMS desktops. Systems Group is working on the problem.

Linux reboots and updates

Linux compute nodes and desktop machines running either CentOS 7 or RHEL 6 will be rebooted on Thursday, January 11th for software and security updates. Updates will be applied to machines between 7:00 pm and midnight.

In an effort to try to minimize any corrupted files or lost data, please save all your work and log out of any Linux systems before this time.

Partial Server Outage at 60 Fifth Avenue

January 05, 2018

UPDATE: As of 7:30 p.m., the cooling system at 60 Fifth Avenue is repaired

All systems at the Courant data center at that location should be available again.

-------------------------

10:00 a.m.

Please be advised that the servers at 60 Fifth Avenue are experiencing outages due to a problem with the cooling unit. The facilities maintainence team is currently working to quickly resolve the issue. Restoration time is currently unknown and will be announced. Thank you for your patience. 

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