Downtime Schedule for 2017-2018 Academic Year

The following is a tentative maintenance downtime scheduled for the 2017-2018 academic year.  The majority of downtimes are the first Tuesday of each month but some have been 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

7/6 – (moved from 7/4 – holiday) - 
Cluster-specific: UB-HPC & Industry OS updates & reboots; FreeIPA updates; Cloud (console only) unavailable

8/1  – 
Cluster-wide:  SLURM updates, UB-HPC, Industry & PI cluster OS updates & reboots

8/28 – classes start

9/5 – 
Cluster-specific: UB-HPC and Industry cluster OS updates & reboots 


10/3 – Cluster-specific: UB-HPC and Industry cluster OS updates & reboots 

11/7 - Cluster-wide: SLURM updates; UB-HPC, Industry & PI cluster OS (Centos 7.4) updates & reboots

12/19-1/28 – winter recess 

12/19-20 - Center-wide: UB Facilities power outage; operating system updates on core infrastructure servers, cluster nodes, and front end servers

1/8  – 
Cluster-wide:   Critical security updates

1/29 – classes start

2/6 – 
Cluster-specific: UB-HPC and Industry cluster OS updates & reboots 

3/19-24 – spring break

3/20 (moved from 3/6) – 
Center-wide:  UB-HPC, Industry & PI cluster reboots, Arista networking updates

CANCELLED:  4/3 – Cluster-specific: UB-HPC and Industry cluster OS updates & reboots 

5/11 – last day of classes
5/19 – last day of exams

Summer downtime schedule (5/29, 6/25-29, 7/24, 8/21)

8/27 - first day of classes fall semester