Amarel system status
Accordion Content
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Dear Amarel Users,
As we continue our migration from CentOS to Red Hat Enterprise Linux (RHEL), we are implementing changes to our shared software directories to ensure a stable environment for the new operating system.
During the scheduled maintenance window next week (May 19–20), we will be transitioning the /projects/community path. To help you prepare, we have outlined how this affects your current workflows and where new software will reside.
New RHEL Environment: /projects/community
Moving forward, the /projects/community directory will be reserved exclusively for software installations built and supported on Red Hat.
New Standards: For software to be part of the supported community stack, it must include a module file located in /projects/community/modulefiles.
Cleanup Policy: To maintain system health, software installations found without a corresponding module file may be removed during periodic cleanup operations.
Legacy Environment: /projects/community-old
The current CentOS-based /projects/community directory will be renamed to /projects/community-old. All your existing files and software will remain accessible, but you must update your access methods.
To continue using modules from the old environment, you must manually add the path by running:
module use /projects/community-old/modulefilesIf you have the old path configured in your .bashrc file or other startup scripts, please update those entries to reflect the new -old suffix.
We recommend reviewing any workflows, environment modules, or scripts that may depend on the current path structure.
If you have any questions or concerns regarding these changes, please reach out to our team at help@oarc.rutgers.edu.
Best regards,
The OARC Team
Updated July 20, 2026:
Amarel on all campuses is running normally after completion of regularly scheduled monthly maintenance. Please report any issues you may encounter. Thank you!
Amarel monthly maintenance
Our vision is to provide a better user environment, with rolling updates affecting one portion of the cluster at a time, instead of a whole system. We strive to perform maintenance in less active periods so that classes and grants are minimally affected.
In January 2021, in an effort to avoid long, intensive maintenance periods, OARC shifted to a regular monthly maintenance schedule.
We will continue this, with the tentative schedule listed below of maintenance spanning up to 2 days each month, starting on the 3rd Tuesday of the month. We may not need the full 2 days each month, but we will reserve that time in case it is needed. Otherwise, the cluster will be returned to service early, immediately after the planned maintenance is complete. When possible, we will skip a maintenance window entirely.
Each maintenance period is expected to begin at about 08:00 ET on the first day and end by about 23:59 ET on the 2nd day.
Anticipated maintenance schedule (all dates subject to change):
| Year | Month | Start Day | End Day | Notes |
| 2026 | Jan | 13 | 14 | |
| 2026 | Feb | 17 | 18 | |
| 2026 | Mar | 24 | 25 | |
| 2026 | Apr | 21 | 22 | |
| 2026 | May | 19 | 20 | |
| 2026 | Jun | 23 | 24 | |
| 2026 | Jul | 21 | 22 | |
| 2026 | Aug | 18 | 19 | |
| 2026 | Sep | 15 | 16 | |
| 2026 | Oct | 13 | 14 | |
| 2026 | Nov | 10 | 11 | |
| 2026 | Dec | 15 | 16 | |
| 2027 | Jan | 12 | 13 | |
| 2027 | Feb | 16 | 17 | |
| 2027 | Mar | 23 | 24 | |
| 2027 | Apr | 20 | 21 | |
| 2027 | May | 18 | 19 | |
| 2027 | Jun | 22 | 23 | |
| 2027 | Jul | 20 | 21 | |
| 2027 | Aug | 17 | 18 | |
| 2027 | Sep | 14 | 15 | |
| 2027 | Oct | 12 | 13 | |
| 2027 | Nov | 9 | 10 | |
| 2027 | Dec | 14 | 15 | |
Maintenance is usually scheduled for weekdays because it often involves coordination with University facilities teams or external vendors. There may also be times when Amarel must be unavailable due to externally-scheduled data center facilities, power, or telecommunications maintenance. When this happens, we will do our best to combine those tasks with our own maintenance work (e.g., by working in parallel or postponing some tasks).
