Downtime Schedule for 2018-2019 Academic Year

The following is a tentative maintenance downtime scheduled for the 2018-2019 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



8/21  – Cluster-wide:  Operating system updates & reboots; OnDemand upgrade; addition of new NSF compute & GPU nodes to the ub-hpc cluster.  DETAILS


8/27 – classes start 


10/9 – Cluster-wide:  Operating system updates & reboot


11/6 - Cluster-wide: Operating system updates & reboot


12/18-1/28 – winter recess 


12/18 - Cluster-wide: Operating system updates & reboot

 

1/22  – Center-wide:   Operating system updates & reboot

 

1/28 – classes start


2/5 – Cluster-wide:   Operating system updates & reboot

 

3/18-23 – spring break


3/19 – Cluster-wide:   Operating system updates & reboot (NOTE: date change to accommodate Spring Break)


4/3 – Cluster-wide:   Operating system updates & reboot


5/7 - Cluster-wide:   Operating system updates & reboot


5/10 – last day of classes
5/18 – last day of exams


Summer 2019 downtime schedule TBD