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
Dori Sajdak
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