Downtime Schedule for 2019-2020 Academic Year

The following is a tentative maintenance downtime scheduled for the 2019-2020 academic year.  The majority of downtimes are the first Tuesday of each month but some may be moved to accommodate holidays or  the academic calendar.  


Please note: This schedule can, and likely will change, to respond to vendor software updates, critical security patches released off-schedule, or unplanned problems.  We will update this page as soon as any decisions are made that affect the schedule.


Types of downtimes:

Center-wide – all services at CCR affected

Cluster-wide – all clusters affected but no other services

Cluster-specific – some, but not all, clusters affected but no other services

Cloud – all cloud services affected but no other CCR services


Services to be Updated:

FreeIPA – LDAP & authentication servers

Foreman – Installation servers - clusters affected

DNS – 1-2 times per year; done during center-wide downtimes only

Isilon Storage – 1-2 times per year; center-wide

Arista Networking – once per year; center-wide

GPFS Storage – once per year; cluster-wide

SLURM – all clusters affected; aim to update 4 times/year; dependent on software release schedule

Cloud - affects the CCR research cloud only; no other services affected


Downtime Dates & Tentative Update Plan

6/25 - Cluster-wide:   Operating system updates & reboot

7/23-24 - CENTERWIDE: Re-installation of all cluster nodes; switch to one faculty cluster; roll-out new account system requiring password resets for all users

8/20 -  Cluster-wide:   Operating system updates & reboot 

8/26 - Fall classes Begin

9/24 -  Cluster-wide:   Operating system updates & reboot 

10/29 -  Cluster-wide:   Operating system updates & reboot 

11/26 -  Cluster-wide:   Operating system updates & reboot 

12/6 - last day of classes

12/16 - last day of final exams

12/17 -  Cluster-wide:   Operating system updates & reboot 

1/21 -  Cluster-wide:   Operating system updates & reboot 

1/27 - Spring classes begin

2/25 -  Cluster-wide:   Operating system updates & reboot 

3/16-21 - Spring recess

3/31 -  Cluster-wide:   Operating system updates & reboot 

4/28 -  Cluster-wide:   Operating system updates & reboot 

5/8 - last day of classes

5/16 - last day of exams

5/26 -  Cluster-wide:   Operating system updates & reboot 

6/30 -  Cluster-wide:   Operating system updates & reboot