FAS Research Computing - Notice history

System Under Maintenance

Status page for the Harvard FAS Research Computing cluster and other resources.

Cluster Utilization (VPN and FASRC login required): Cannon | FASSE


Please scroll down to see details on any Incidents or maintenance notices.
Monthly maintenance occurs on the first Monday of the month (except holidays).

GETTING HELP
Documentation: https://docs.rc.fas.harvard.edu | Account Portal https://portal.rc.fas.harvard.edu
Email: rchelp@rc.fas.harvard.edu | Support Hours

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Under maintenance

SLURM Scheduler - Cannon - Under maintenance

Cannon Compute Cluster (Holyoke) - Under maintenance

Boston Compute Nodes - Under maintenance

GPU nodes (Holyoke) - Under maintenance

seas_compute - Under maintenance

Under maintenance

SLURM Scheduler - FASSE - Under maintenance

FASSE Compute Cluster (Holyoke) - Under maintenance

Under maintenance

Kempner Cluster CPU - Under maintenance

Kempner Cluster GPU - Under maintenance

Under maintenance

FASSE login nodes - Under maintenance

Under maintenance

Cannon Open OnDemand/VDI - Under maintenance

FASSE Open OnDemand/VDI - Under maintenance

Under maintenance

Netscratch (Global Scratch) - Under maintenance

Home Directory Storage - Boston - Under maintenance

Tape - (Tier 3) - Under maintenance

Holylabs - Under maintenance

Isilon Storage Holyoke (Tier 1) - Under maintenance

Holystore01 (Tier 0) - Under maintenance

HolyLFS04 (Tier 0) - Under maintenance

HolyLFS05 (Tier 0) - Under maintenance

HolyLFS06 (Tier 0) - Under maintenance

Holyoke Tier 2 NFS (new) - Under maintenance

Holyoke Specialty Storage - Under maintenance

holECS - Under maintenance

Isilon Storage Boston (Tier 1) - Under maintenance

BosLFS02 (Tier 0) - Under maintenance

Boston Tier 2 NFS (new) - Under maintenance

CEPH Storage Boston (Tier 2) - Under maintenance

Boston Specialty Storage - Under maintenance

bosECS - Under maintenance

Samba Cluster - Under maintenance

Globus Data Transfer - Under maintenance

Notice history

Jun 2026

2026 MGHPCC power downtime June 15-18, 2026
Scheduled for June 15, 2026 at 1:00 PM – 1:00 PM
  • In progress
    June 15, 2026 at 1:00 PM
    In progress
    June 15, 2026 at 1:00 PM
    Maintenance is now in progress
  • Planned
    June 15, 2026 at 1:00 PM
    Planned
    June 15, 2026 at 1:00 PM

    The yearly power downtime at our Holyoke data center, MGHPCC, has been scheduled by the facility. This year's power downtime will take place on Tuesday June  15th - 18th, 2025.  There will be no June monthly maintenance as a result.

    Since the facility will be powered down for two days this year, we will not be performing the usual maintenance tasks. 
    That said, networking and other key infrastructure will be doing maintenance.

    IMPORTANT NOTE: FASRC storage at both Holyoke and Boston will be affected and should not be expected to be available throughout the downtime. Please plan ahead accordingly.

    • Monday June 15th -  Power-down begins at 9AM

    • Tuesday June 16th - Power out at MGHPCC

    • Wednesday June 17th - Power out at MGHPCC

    • Thursday June 18th - Expected return to full service by 5PM

    • Friday June 19th - Please note that June 19th is a university holiday

     

    Monday June 15th -  Power-down begins at 9AM Tuesday June 16th - Power out at MGHPCC Wednesday June 17th - Power out at MGHPCC Thursday June 18th - Expected return to full service by 5PM

    For more detailed information and follow-up, please see:
    https://www.rc.fas.harvard.edu/mghpcc-yearly-shutdown or this Status Page

holylfs06 degraded
  • Resolved
    Resolved
    This incident has been resolved.
  • Investigating
    Investigating

    Holylfs06 storage may be slow or unresponsive

    We are currently investigating this incident.

Portal unavailable
  • Resolved
    Resolved

    The Portal website should be accessible for all now.

    This incident has been resolved.

  • Investigating
    Investigating

    There is an SSL issue with the Portal which will cause an error for anyone attempting to connect.

    Investigating.

Authentication outage
  • Resolved
    Resolved

    Openauth/radius is now operational. This update was created by an automated monitoring service.

  • Investigating
    Investigating

    Authentication issues with openauth/radius. This incident was created by an automated monitoring service.

Coldfront server error
  • Resolved
    Resolved

    This incident has been resolved. Coldfront is now available.

  • Investigating
    Investigating

    Coldfront is showing a server error. Investigating.

May 2026

Cannon cluster down
  • Resolved
    Resolved

    Slurm crashed on 4:30p on Friday due to a user running a large sacct query against the Slurm database. This caused the database host to run out of memory and crash the scheduler. To prevent this from reoccurring we are reducing the time range that users are permitted to query at one time to 7 days. Thus if you need to cover a month you would need to query in four 7 day increments.

    We do ask users to be judicious in their querying of the Slurm. Only ask for those fields that you require. Please also ensure any AI agents you have running limit their queries appropriately.

  • Identified
    Identified

    To temporarily stabilize the situation, we have reduced the maximum query time for sacct and other Slurm commands to be 1 day. We have filed a ticket with SchedMD to further analyze the issue.

    The cluster is back up and the scheduler is accepting new jobs.

    We will continue to monitor for emergencies over the weekend, and resume in-depth troubleshooting on Monday.

  • Investigating
    Investigating

    The Slurm scheduler is experiencing an error which is impacting jobs. The Cannon cluster will be inaccessible while we troubleshoot.

    We are currently investigating this incident.

Account approvals down
  • Resolved
    Resolved

    This incident has been resolved. Login is again available for approvals/onboarding.

  • Investigating
    Investigating

    Account approvals through Portal are not available at this time.

    We are currently investigating this incident.

FASRC VPN (Cambridge) is back up
  • Resolved
    Resolved
    FASRC VPN (Cambridge) is back up. This incident was automatically resolved by Instatus monitoring.
  • Investigating
    Investigating
    FASRC VPN (Cambridge) is down at the moment. This incident was automatically created by Instatus monitoring.
FASRC VPN (Cambridge) is back up
  • Resolved
    Resolved
    FASRC VPN (Cambridge) is back up. This incident was automatically resolved by Instatus monitoring.
  • Investigating
    Investigating
    FASRC VPN (Cambridge) is down at the moment. This incident was automatically created by Instatus monitoring.
FASRC VPN (Cambridge) is back up
  • Resolved
    Resolved
    FASRC VPN (Cambridge) is back up. This incident was automatically resolved by Instatus monitoring.
  • Investigating
    Investigating
    FASRC VPN (Cambridge) is down at the moment. This incident was automatically created by Instatus monitoring.

Apr 2026

OpenOnDemand maintenance
  • Completed
    April 30, 2026 at 2:00 PM
    Completed
    April 30, 2026 at 2:00 PM
    Maintenance has completed successfully
  • In progress
    April 30, 2026 at 12:00 PM
    In progress
    April 30, 2026 at 12:00 PM
    Maintenance is now in progress
  • Planned
    April 30, 2026 at 12:00 PM
    Planned
    April 30, 2026 at 12:00 PM

    At 8am on Thursday April 30th we will be upgrading from Open OnDemand version 4.0.7 to 4.1.4 on both the Cannon and FASSE clusters.

    This is not expected to impact running jobs.

    This upgrade adds the Jobs->Project Manager menu item and fixes an issue that affected access to the Clusters->Shell Access menu item when using Firefox.

login.rc.fas.harvard.edu is responding normally
  • Resolved
    Resolved
    \[login.rc.fas.harvard.edu\](http://login.rc.fas.harvard.edu) is responding normally. This incident was automatically resolved.
  • Investigating
    Investigating
    login.rc.fas.harvard.edu is not responding normally. This incident was automatically created.
Login and OOD node access restricted due to serious security issue - No ETA
  • Resolved
    Resolved

    The cluster has been rebooted and all nodes, including login and OOD, have been patched.

    The scheduler is re-opened and jobs which were preempted/requeued have priority for re-scheduling.

    Some non-standard, lab-owned nodes may still require patching. The owners of these machines may be contacted about this.

    Thank you for your patience. This is a global issue and is being addressed at centers everywhere.

  • Update
    Update

    To mitigate this exploit we will need to restart -all nodes- on the cluster.

    This will begin at 1PM and run until all nodes have restarted (no ETA).

    This will mean any un-finished jobs will be terminated. There is no way to avoid this.

    We will then be validating the fix before re-opening the login. OOD nodes, and scheduler.

    Next steps and updates will be posted here.

  • Update
    Update

    We are developing a plan of attack to mitigate this exploit. Please know that this is a very serious issue and so we are treating it as such. Thank you for your understanding.

    We are currently awaiting further information from the Redhat/Fedora/Rocky community but building a plan in the meantime with the information we have. More details to follow as we can share them.

    If you need to access storage (except scratch and home directories), Globus is still online and available. But again, login nodes and OOD are not available.

  • Identified
    Identified

    Due to a serious in-the-wild exploit which can compromise Fedora-based Linux distributions including Rocky, which is used on the cluster, we need to restrict access. All login and OOD nodes are shut down until a fix can be put in place. Jobs running on the cluster will continue running.

    No ETA, There is not fix at this time. We will update our status page in the morning once we have more information or a fix to roll out.

    This is a serious exploit and we do not take this measure lightly. Please follow this status page for updates and eventual resolution.

holylfs06 down
  • Resolved
    Resolved

    Holylfs06 is accessible again.

    This incident has been resolved.

  • Identified
    Identified
    Holylfs06 storage is down. We are investigating. More details as they are known.
Website security maintenance (www.rc and docs.rc) 4-28-26 1pm
  • Completed
    April 28, 2026 at 5:16 PM
    Completed
    April 28, 2026 at 5:16 PM

    Website maintenance has completed successfully.

  • In progress
    April 28, 2026 at 5:00 PM
    In progress
    April 28, 2026 at 5:00 PM
    Maintenance is now in progress
  • Planned
    April 28, 2026 at 5:00 PM
    Planned
    April 28, 2026 at 5:00 PM

    Security updates are required for www.rc.fas.harvard.edu and docs.rc.fas.harvard.edu
    This work will take place today between 1pm and 2pm
    Both sites will be down for very short periods during the updates.

Apr 2026 to Jun 2026

Next

For issues not shown here, please contact FASRC via
https://portal.rc.fas.harvard.edu or email rchelp@rc.fas.harvard.edu