UCloud Status

Ongoing

Issues with nodea0-19
The machine 'nodea0-19' has been rebooted due to an error with one of the GPU cards. We are monitoring the node for a potential hardware issue. Sep 2, 07:35 - now

Updates
A support case has been opened to get the card replaced. Sep 10, 07:49 The error has reappeared, the card will most likely need to be replaced. Sep 4, 07:48

September, 2025

Power fluctuation caused machines to reboot
A fluctuation in the power grid caused around 30 machines to reboot in the UCloud server room. Jobs running on the machines were terminated during the reboot. Sep 9, 21:45 - Sep 10, 06:30

Updates

August, 2025

UCloud degraded
Between 00:21 and 08:00 UCloud was running with elevated error rates causing the job page to not load correctly. The issue has been resolved. Aug 29, 00:21 - Aug 29, 08:01

Updates
Jobs unable to start on SDU/K8s
We are aware of a situation causing jobs to not start. We believe this is related to the storage system. We are currently investigating the situation. Aug 20, 12:26 - Aug 20, 15:22

Updates
'Type 1 - KU' storage allocations unavailable
Projects receiving storage allocations from "Type 1 - KU" for SDU/K8s were temporarily unavailable. The allocations should be available once again now. Aug 15, 11:03 - Aug 15, 11:02

Updates
SDU/K8s usage tracked incorrectly for storage
We are aware of an issue causing usage to be tracked incorrectly for storage. We will restart the system to fix this issue. Aug 14, 11:27 - Aug 14, 11:39

Updates
We have completed a reset of usage numbers in storage which we believe will fix the issue. The system is now back online after a few minutes of downtime. Aug 14, 11:39
SDU/K8s some jobs are slow to start
We are experiencing slower storage performance on some nodes, which are leading to jobs being slow to start. Jobs that would ordinarily start within a minute can now take up to a few minutes before they start. We are monitoring the situation. Aug 14, 08:54 - Aug 15, 13:07

Updates
SDU/K8s downtime
An issue has been resolved leading to a crash is under investigation Aug 13, 17:30 - Aug 13, 17:55

Updates
Syncthing temporarily disabled
Syncthing has temporarily been disabled while we investigate an issue with the system. We do not believe that the system will be re-enabled today (13/08/25). We hope to have an update with ETA or fix tomorrow (14/08/25). Aug 13, 15:58 - Aug 15, 13:07

Updates
Syncthing has been re-enabled. We will monitor the situation. If instability is reintroduced then we may need to disable it again. Status updates will be posted here if this becomes needed. Aug 15, 13:08 We are currently testing a fix internally and hope to deploy the fix tomorrow (15/08/25). Aug 14, 14:08
Jobs unable to start
We are investigating an issue related to jobs not starting. Aug 13, 14:52 - Aug 13, 15:58

Updates
The is no longer present. We will continue to monitor the system. Aug 13, 15:58
SDU/K8s maintenance
UPDATE: The maintenance has been moved from the 12th of August to the 13th of August. The SDU/K8s (DeiC Interactive HPC, SDU) service provider will be down on the 13th of August (13/08/2025). All jobs will be killed prior to the maintenance and will not be automatically restarted. The maintenance is expected to take place between 08:00 and 16:00. Aug 13, 08:00 - Aug 13, 13:45

Updates
Maintenance has been completed. We will be monitoring the system over the coming hours and days. Aug 13, 13:45 Preparation phase of the maintenance took longer than expected. The primary work has started now and the provider is no longer accessible as noted in the original maintenance notice. Aug 13, 09:56
UCloud interactive interfaces not working
We are investigating an issue which causes the "Open interface" button to not appear on the SDU/K8s provider. Aug 8, 08:50 - Aug 8, 09:03

Updates
The issue has been resolved. Aug 8, 09:03
UCloud is experiencing issues
We are looking into issues with UCloud, which causes most funtionality to not be working. Aug 7, 21:15 - Aug 8, 08:50

Updates
The problem has been identified and the system is operational again. Aug 8, 08:45
AAU/K8s maintenance
The AAU/K8s (DeiC Interactive HPC, AAU) service provider will be down on the 5th of August (05/08/2025). All jobs will be killed prior to the maintenance and will not be automatically restarted. The maintenance is expected to take place between 08:00 and 16:00. Aug 5, 08:00 - Aug 5, 10:29

Updates
Maintenance has completed and the system is available. We are monitoring the system for possible bugs. Aug 5, 10:29

July, 2025

Short network outage
This morning we had an issue with the internal network, which caused disconnects across the entire infrastructure for around 15 minutes. We are monitoring the system for related issues. Jul 9, 08:43 - Jul 9, 16:00

Updates
We believe most things should be working again, but we are still monitoring the system for potential issues. Jul 9, 11:53 It seems there are still some services that have not properly recovered. Jul 9, 10:20

June, 2025

Slow response times
We are currently investigating an issue causing slow response times. Jun 24, 12:52 - Jun 24, 13:17

Updates
The issue has been resolved. Jun 24, 13:17
UCloud jobs might be slower than normal
On Monday evening (June 23rd) a machine in our Ceph storage system failed. This is affecting u1-standard and u1-fat nodes, where jobs might run slower than usual, because the storage system is under heavy load while rebuilding data redundancy. Jun 23, 22:15 - Jul 16, 11:42

Updates
Issues with H100 GPU node
We are experiencing hardware issues with one of the u3-gpu nodes on UCloud, resulting in the machine sometimes powering off. We are monitoring the situation. Jun 16, 07:48 - Aug 14, 15:00

Updates
The machine has been repaired and returned to production. Aug 14, 15:00 The issue persists and the machine has been taken out of production until the problem has been solved. Jul 3, 09:30
UCloud apps interface not working
This morning we had an issue where accessing the interface of UCloud apps simply resulted in "Not Found". The problem should now be solved. Jun 11, 06:00 - Jun 11, 07:57

Updates
Internal error when submitting jobs
UCloud has experienced issues with job creation beginning around Friday 23:28. This has likely caused some jobs to be terminated with an incorrect "insufficient funds" message. The issue has now been resolved and we are monitoring the situation. Jun 6, 23:28 - Jun 8, 10:30

Updates
Unexpected machine reboots
This morning 15 machines rebooted in the UCloud server room due to a fluctuation in the power grid. All machines are running again, but jobs running on the machines were terminated. Jun 2, 06:25 - Jun 2, 06:30

Updates

May, 2025

Bug fixes for user-interface
We have deployed a new version of UCloud's interface containing various fixes. This caused more update messages than intended, we apologize for the temporary notification spam. May 16, 08:11 - May 16, 08:11

Updates
Minor UCloud maintenance
During the weekend 3-4 May we are performing minor maintenance on the infrastructure behind UCloud in the morning. This might cause minor disruptions of a few minutes while services are being restarted. May 3, 06:00 - May 4, 10:00

Updates

April, 2025

UCloud issue
UCloud was down between 10:30 and 10:55. The issue was caused by an issue with the persistence layer of UCloud. The issue didn't affect already running jobs. Apr 22, 10:30 - Apr 22, 10:55

Updates
Power fluctuation caused machines to reboot
A transient power fluctuation in the UCloud data center caused 32 machines to reboot. All running jobs where terminated, but the machines are back online and accepting new jobs. Apr 12, 17:41 - Apr 12, 18:00

Updates
Disruption of service
UCloud experienced disruption of service between 08:39 and 08:52. The issue has been resolved now. Apr 2, 08:39 - Apr 2, 08:52

Updates

March, 2025

Issues with AAU OpenStack provider
Users may experience instability in starting and stopping virtual machines on the AAU provider. The issue has intermittently caused some jobs to fail to start with a message that "all available resources have been allocated" even though resources are available. Mar 5, 12:00 - Mar 6, 15:00

Updates

February, 2025

SDU/K8s unavailable for maintenance
The SDU/K8s is currently unavailable for maintenance. The maintenance is expected to take a few minutes and is required to fix an issue causing incorrect "insufficient funds" messages. Feb 24, 12:45 - Feb 24, 13:26

Updates
The provider is now running again. We are still running a background maintenance job and the system might restart several times during the next hour. Feb 24, 13:04
Elevated error rates on the SDU/K8s provider
The SDU/K8s provider experienced elevated error rates between 09:05 and 09:25. The issue has now been resolved. Feb 18, 09:05 - Feb 18, 09:25

Updates
AAU/K8s increased failure rate
The AAU/K8s provider is currently experiencing timeouts and increased failure rates. The timeouts can cause slower than usual response times from UCloud even when not attempting to start something on AAU/K8s. Feb 11, 08:04 - Feb 11, 08:28

Updates
The situation has now been stabilized and it should now function as expected. Feb 11, 08:28
Maintenace for AAU providers
Maintenance window for the AAU providers (Kubernetes and OpenStack). Running jobs at the Kubernetes provider will be terminated and running VMs in the OpenStack provider will be rebooted. Services will return to normal at the end of the day. Feb 11, 07:00 - Feb 11, 16:00

Updates
Maintenance for the AAU Kubernetes provider has been completed. Feb 11, 11:15
Disruption of service to the UCloud platform
We have solved an issue which caused disruption of service to the UCloud platform itself. This caused several job related endpoints to fail unexpectedly. The issue started around 04:00 and was resolved at around 07:56. Feb 11, 04:00 - Feb 11, 07:56

Updates
AAU/K8s and AAU/OpenStack CEPH maintenance
In order to ensure stable operations and data security, the storage system that is utilised by several AAU based HPC platforms is undergoing rebalancing. The systems affected include: AAU/Kubernetes and AAU/OpenStack. This process runs automatically, and can result in reduced performance (read and write speeds) on all local platforms. This process is planned to be completed by 10/02/2025. Feb 3, 08:11 - Feb 10, 09:00

Updates

January, 2025

UCloud degraded performance
We are currently working on resolving an issue related to the orchestration components of UCloud. Jan 27, 08:34 - Jan 27, 13:06

Updates
The issue has been resolved. Jan 27, 13:06
System update on Hippo
We will have a maintenance window to perform system updates on the Hippo cluster. The work will start in the morning and it is expected to be completed in the afternoon. Jan 27, 08:00 - Jan 27, 15:21

Updates
Update has been completed and jobs are running again. Jan 27, 15:21
UCloud maintenance
On Sunday morning (January 26th) we will perform extraordinary maintenance on some core parts of the UCloud system, including some database migrations. To complete these tasks we will have to take UCloud offline for a few hours. Running jobs will continue to run, but they will be inaccessible while UCloud is offline. Jan 26, 06:30 - Jan 26, 10:16

Updates
Maintenance has completed. Jan 26, 10:16 The database migration has been completed and UCloud is online again. However, there might be smaller instabilities while we perform the rest of the tasks. Jan 26, 08:41
Unable to apply for certain machine types
We are currently investigating an issue in the grant system which makes it impossible to approve applications for certain machine types, primarily affecting the AAU/K8s service proivder. Jan 2, 11:09 - Jan 2, 13:16

Updates
The issue has been resolved. Jan 2, 13:17
2025 allocations unavailable
We are aware of an issue which caused the 2024 allocations to be correctly deactivated but without the 2025 allocations being activated. We have manually activated the 2025 allocations now and will continue to do testing to ensure that all 2025 allocations are usable. Jan 2, 10:02 - Jan 2, 10:00

Updates

December, 2024

Hippo is unavailable and other services are also affected
We have lost a core switch in the SDU data center, which means that part of the network is unavailable, in particular Hippo, but some of the UCloud compute nodes are also not able to access the internet. Dec 10, 06:39 - Dec 10, 08:49

Updates
All services should be up and running again. Dec 10, 08:49
Maintenance in the UCloud data center
In the morning on 9 Dec 2024 we have to perform maintenance in the UCloud data center. During the maintenance operation we will most likely have to shut down the u1-madlab, u2-madlab and u2-gpu machines for a couple of hours. Running jobs will be terminated. Dec 9, 08:00 - Dec 9, 10:46

Updates
Maintenance has completed and all machines should now be available again. Dec 9, 10:46 The Hippo frontend is accessible again. Dec 9, 10:19 Unfortunately we have also been forced to power off the frontend for Hippo, the system will be unavailable for an hour or two. Dec 9, 09:39
Maintenance at AAU providers
Scheduled maintenance at AAU, which will affect both the OpenStack and Kubernetes providers. Running jobs will be terminated during the maintenance window. Dec 3, 07:00 - Dec 3, 16:02

Updates
The upgrade of the Kubernetes cluster has been completed. Dec 3, 10:43

November, 2024

Reduced availability on UCloud platform
UCloud was partially unavailable for around 30 minutes due to an internal database that stopped responding. The problem has been solved and the system should be back to normal. Nov 21, 12:36 - Nov 21, 13:10

Updates

October, 2024

Bug-fix for minor UI bugs
We have pushed an update to the UCloud user-interface which fixes a number of small UI bugs. Including a bug which caused the interface to incorrectly display a message stating that some systems had degraded performance. Oct 21, 08:09 - Oct 21, 08:09

Updates
Bug-fix for some applications returning
A bug has been fixed which caused applications without a default flavor to return "Not found". In particular, this bug caused issues with the following applications: nf-core, SAMtools and Kallisto. Oct 18, 10:46 - Oct 18, 10:46

Updates
Bug-fix for folder uploads
An update has been deployed to fix a newly introduced bug in folder uploads. Folder uploads are now expected to work as normal again. The bug was introduced in an update around 9:50 this morning. Oct 17, 15:25 - Oct 17, 15:25

Updates
Minor UCloud outage this morning
Due to a maintenance operation UCloud was partially unavailable this morning, but things are back to normal. Oct 17, 07:45 - Oct 17, 08:33

Updates
Technical issues with virtual machines
Due to technical difficulties, users may currently experience periodic issues when attempting to start or stop virtual machines on the UCloud platform. We are investigating the issues and will update the status as soon as possible. If a server start-up period takes more than 5 minutes, we request users to cancel the job. Oct 14, 08:02 - Oct 16, 14:53

Updates
The maintenance has complete and the system should be fully operational again. Oct 16, 14:53 In order to mitigate the issue we have decided on having an extraordinary service window, starting from 2024-10-16 08:00 until 2024-10-17 16:00. In this period, we will be making repairs on the platform, and we kindly ask our users to refrain from starting and stopping VMs during this time. The repairs are not expected to have any impact on already running instances, but in case we need to reboot the servers and any running processes on the instances will be stopped during the reboot. If you have unsaved work on the instance, please save this before tomorrow morning. Oct 15, 13:56
Issues with UCloud resource system
We are experiencing intermittent issues with the resource system in UCloud. This results in resources (jobs, files, etc) being unavailable. We are investigating the issue. Oct 3, 19:14 - Jan 1, 01:00

Updates
Various mitigations have been put in place to drastically minimise the impact of this issue. We are still investigating the root cause. Oct 28, 11:01

September, 2024

Hardware issues with u2-gpu machines
UCloud is experiencing hardware issues with the u2-gpu machines, resulting is reduced availability. Sep 23, 10:39 - Nov 19, 10:38

Updates
The failed GPU has finally been replaced and full availability has been restored. Currently running jobs had to be terminated this morning to perform the hardware replacement. Nov 19, 10:38 The u2-gpu machines are again unavailable. We are still waiting for hardware repairs. Oct 8, 14:42 The u2-gpu machines are now available on UCloud again. However, jobs running on the machine will be killed when we need to do work on the machine to fix the hardware problem. Sep 24, 15:50 We have performed maintenance for the u2-gpu machine, but unfortunately hardware replacements are needed. Sep 24, 14:18 The u2-gpu machines have been flagged for maintenance. It will not be possible to start new jobs until the maintenance has completed. Sep 23, 16:47 The u2-gpu machines are available again, but one of the cards are not working, which means that u2-gpu-8 machine cannot be used. Sep 23, 10:39

Issues with nodea0-19

Updates

Power fluctuation caused machines to reboot

Updates

UCloud degraded

Updates

Jobs unable to start on SDU/K8s

Updates

'Type 1 - KU' storage allocations unavailable

Updates

SDU/K8s usage tracked incorrectly for storage

Updates

SDU/K8s some jobs are slow to start

Updates

SDU/K8s downtime

Updates

Syncthing temporarily disabled

Updates

Jobs unable to start

Updates

SDU/K8s maintenance

Updates

UCloud interactive interfaces not working

Updates

UCloud is experiencing issues

Updates

AAU/K8s maintenance

Updates

Short network outage

Updates

Slow response times

Updates

UCloud jobs might be slower than normal

Updates

Issues with H100 GPU node

Updates

UCloud apps interface not working

Updates

Internal error when submitting jobs

Updates

Unexpected machine reboots

Updates

Bug fixes for user-interface

Updates

Minor UCloud maintenance

Updates

UCloud issue

Updates

Power fluctuation caused machines to reboot

Updates

Disruption of service

Updates

Issues with AAU OpenStack provider

Updates

SDU/K8s unavailable for maintenance

Updates

Elevated error rates on the SDU/K8s provider

Updates

AAU/K8s increased failure rate

Updates

Maintenace for AAU providers

Updates

Disruption of service to the UCloud platform

Updates

AAU/K8s and AAU/OpenStack CEPH maintenance

Updates

UCloud degraded performance

Updates

System update on Hippo

Updates

UCloud maintenance

Updates

Unable to apply for certain machine types

Updates

2025 allocations unavailable

Updates

Hippo is unavailable and other services are also affected

Updates

Maintenance in the UCloud data center

Updates