General Informations





Still working but with some errors



Current status reports

Power outage

Status: Status/green.gif

2019-09-17 12:11
Power reestablished.
2019-09-17 10:29

Power outage in ET area. For up-to-date information please visit

Outage of Project Storage

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2019-09-17 12:11
At the moment the power has been reestablished after the outage there was again a failure of the storage system until 12:30.
2019-09-05 15:30
Project homes on bluebay are unavailable until 19:10 due to another hardware failure
2019-08-28 07:00
Whilst the service is running stable we have still open ongoing communication with the cluster filesystem developers to further track down the issues seen in the last weeks.
2019-08-22 06:00
Planned reboot of second system in cluster and related managment node.
2019-08-21 06:00
Planned reboot of first system (expect downtime of 5-10 minutes).
2019-08-18 03:45
Full sync of the missing storage targed finally succeeded. For now full redudancy regained. We are still in contact with the developers of the cluster filesystem to further analyse the problem.
2019-08-14 08:00
Full redundancy is still not regained. We are as well in contact with the developers of the cluster filesystem to analyse the current problems.
2019-08-12 07:00
Sync of the last storage target is ongoing and reached 82%.
2019-08-08 18:00
Heavy load on the storage system while still needing to perform resync caused high latencies on access. Several services were unavailable or responded very laggy until up 22:30. Situation is normalizing but until the full re-sync succeeds there is potential for further outages.
2019-08-08 15:55
The storage system is operational again and an initial high load phase due to resynchronization is finished.
2019-08-08 14:28
There are again problems with the storage servers...
2019-08-07 16:30
Due to errors while re-syncing the remaining target we needed to restart a full sync on this last target. Unfortunately this means that redundancy in the storage system will not yet be regained.
2019-08-07 06:55
High I/O load on the system during further syncing caused accessing issues on the projects between 06:15 and 06:55. There is still an issue with one target which needs a re-sync which might cause further access outages.
2019-08-06 10:50
Re-syncing is still ongoing, one storage target is missing, redundancy of the underlying storage system is not yet regained.
2019-08-05 13:00
Re-syncing of the broken targets is still ongoing, thus redundancy of the storage system is not yet regained.
2019-08-02 17:00
NFS throughput has normalized, causes are investigated. Recurrences have to be expected.
2019-08-02 15:50
High load on the storage server slowed down NFS connections down to timeouts.
2019-08-02 15:05
The synchronization from the healthy system 2 to system 1 has again been started. Once this synchronization is complete (in roughly 3 days), the system is finally redundant again.
2019-08-02 12:45
The hardware has been fixed. The storage services (NFS/Samba) have been powered on.
2019-08-02 11:50
The failing hardware component is currently being replaced by the hardware supplier.
2019-08-02 10:00
The failing hardware of system 1 has been identified. Availability of hardware replacement parts and successful data consistency check will determine the availability of the storage services.
2019-08-02 08:30
The replaced hardware in system 1 is again faulty, while system 2 seems (hardware-wise) ok. Due to data inconsistency, the storage service can not provide its services.
2019-08-01 16:30
While system 1 has not synchronized all data from system 2, the latter system goes down. Starting from here, project and archive storage is not available anymore.
2019-07-31 22:00
A high load of one of the backup processes leads to an NFS service interruption. After postponing that backup process, NFS recovers.
2019-07-31 21:30
The hardware failure lead to two corrupt storage targets on system 1. After reinitializing the affected targets the synchronization of data from the healthy system 2 starts.
2019-07-31 15:45
Service is restored, hardware exchange was successful. Restoring full redundancy is pending.
2019-07-31 15:00
Project homes on bluebay are unavailable due to replacement of faulty hardware part. Estimated downtime of ~1h.
2019-07-31 07:40
Service is restored, still running with reduced redundancy
2019-07-31 06:20
Project homes on bluebay are unavailable due to deactivation of faulty hardware part
2019-07-31 02:40
Storage system 2 took over. Service is restored but running with reduced redundancy.
2019-07-31 02:30
Project homes on bluebay are unavailable due to a hardware failure on system 1

Outage net_scratch service

Status: Status/green.gif

2019-08-28 07:00
The old server is now decomissioned. We will re-bootstrap the service on new hardware in next weeks and re-announce the service when ready to be used.
2019-08-12 07:00
Read-only access to partially recoverable data has been removed again as planned. We are planning to re-instantiate the service on new hardware.
2019-07-26 12:00

Read-only access to partially recoverable data has been made available on under /mnt. This volume will be available until August 9th.

2019-07-23 08:00

We are in contact with the hardware vendor to see on further steps to take with the respective RAID controller and double-check if there is an issue with it. Data on the net_scratch is with a high change lost.

2019-07-22 15:35

We still try to recover the data but the filesystem got corruption due to a hardware hickup on the underlying raid system. Affected by this is /itet-stor/<username>/net_scratch.

2019-07-22 12:00

Filesystem errors for the device holding the net_scratch service were reported. The server is currently offline due to severe errors on the filesystem.

Disabling ptrace on managed Debian/GNU Linux computers

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2019-07-22 09:00
  • New images are rolled out. As clients reboot they will automatically pick up this new release with a fixed Linux kernel.
2019-07-21 15:00
  • New images are available. On next reboot of an managed client will boot with a patched kernel and the mitigation disabled.
2019-07-19 13:00
  • A current Linux kernel bug allows any unprivileged user to gain root access. A proof of concept code snippet that exploits this vulnerability is publicly available.

    To protect our systems we temporarily disabled ptrace(2) on all managed Linux systems. All software depending on ptrace(2) will completely or at least partially fail. A prominent example is the GNU Debugger gdb.

    A patched Linux kernel will come soon. Once this new kernel is running, we will enable ptrace again.

Outage of Project Storage

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2019-07-18 18:45
Service is back to normal
2019-07-18 17:00
Project homes on bluebay are unavailable

D-ITET services outages

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2019-04-24 14:18
Virtualisation cluster back with full redudancy. User affecting virtual machines were back online already at 07:30.
2019-04-24 13:00
A issue between the redunant switches caused the network issue, leading the cluster to be in an inconsistent state and rebooting all virtual machines. Networking people are investigating further the issue between the switches.
2019-04-24 09:00
Further analysis ongoing, but healt status of virtualisation cluster was affected leading to resets of all hosted virtual machines.
2019-04-24 07:30
We are bringing services back to normal.
2019-04-24 07:00
A planned outage in ETZ building caused stability issues on serveral services of D-ITET in particular HOME and mail services.

Downtime HOME server: Repair filesystem inconsistency

Status: Status/green.gif

2019-02-25 06:18
System is back online.
2019-02-25 06:00
we identified a filesystem usage accounting discrepancy on one filesystem on the HOME server requiring taking down the server and issuing a repair of the underlying filesystem. The home storage is the default storage location for personal accounts on computers managed by ISG.EE.

One of two RDS servers is not reachable

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2019-01-25 23:50
Maintenance issues have been resolved. All RDS servers are up and running now.
2019-01-25 14:00
RDS maintenance window is terminated but one server has still pending updates. Logins are not allowed until this issue has been fixed.

Upgrade license, database and distributed computing management server itetmaster01

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2018-11-12 12:00
PostgreSQL services are online.
2018-11-12 09:31
Arton-Cluster and Condor Grid updates are finished.
2018-11-12 07:30
Arton-Cluster updated (final checks pending)
2018-11-12 07:00
System and license services upgraded. Still pending: Arton, Condor and PostgreSQL Upgrades.
2018-11-12 06:00 - 12:00

Planned upgrade of itetmaster01

Maintenance Project Storage

Status: Status/green.gif

2018-11-08 07:00
Services back online (some recovering slowly)
2018-11-08 06:15
Starting downtime for project storage due to an important maintenance on master node.

D-ITET RDS fronted is difficult to reach due to AD name resolution issues

Status: Status/green.gif

2018-11-02 08:00
RDS is working normally. Protective Measures were put into place to ensure the AD name is updated correctly.
2018-11-01 09:45 can not be resolved by the AD name service. DNS works fine but AD-DNS Synchronization seems to be in an unstable state. We are in contact with the responsible team of central IT services.

Jabba Tape Library HW Problems

Status: Status/green.gif

2018-08-17 07:00

Update: All tape library issues have been solved. All backup and archive services are back online

2018-08-15 12:00

Update: There are still issues with the tape library. It will be down for at least another day.

2018-08-13 11:30

Update: The failed tape drive has been replaced. The management PC is still not working. Due to the very old hardware the supply with spare parts does take longer as usual. The tape library remains offline at least until tomorrow afternoon.

2018-08-10 10:00
Due to a failed tape drive and a defective management PC Jabba's Tape Library is not working. The Jabba server is not affected. We are in contact with IBM and we hope the problem will be fixed by next Monday.

What does this mean for you:

D-ITET mail server downtime: New operating system version

Status: Status/green.gif

2018-06-16 08:24

System is up and running, all tests done. Everything should work as intended. If you find errors, please contact us under <>

2018-06-16 08:08
System is up and running, we are performing some final tests before releasing access with little delay as previously announced.
2018-06-16 07:11
Everything works as planned currently
2018-06-16 06:00
Due to a planned operating system update, the D-ITET mail server will be unavailable today, June 16, 2018 between 06:00 and 08:00.

Major outage virtualization cluster/networking switch

Status: Status/green.gif

2018-04-24 08:56
Sending of emails is restored again. Recieving mail should not be lost for any properly sending email server, since the issues caused a temporary error notification to the sending server which should in turn retry resubmitting an email correctly later on with some delay.
2018-04-24 07:45
Bringing back online most important services, including home service; issue being investigated.
2018-04-24 06:29
Major outage of Networking/virtualization Cluster taking down important D-ITET Services (home Server, partially mailsystem, Linux clients).

Jabba Maintenance

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2018-04-06 08:10
Jabba is back online
2018-04-06 07:00
Jabba is offline due to maintenance work

D-ITET Storage Migration

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2018-03-10 15:00
Migration of user homes completed.
2018-03-10 14:15
User homes migrated, access is unblocked again, some post-migration tasks still pending.
2018-03-10 10:00
D-ITET user homes will be migrated from ID Storage to D-ITET Storage. During the whole migration time access to the user homes for the affected users is blocked. Affected users are informed directly by an email. Server migration: New operating system version

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2018-02-12 08:55
Server upgrade has been completed and all services up and running again.
2018-02-12 06:15

Start updating server from Debian Wheezy 7 to Debian Stretch 9. Downtimes for, svn:// and

Cronbox/Login Server migration: New operating system version

Status: Status/green.gif

2018-02-05 07:00

The host mira has been upgraded to Debian 9 Stretch. SSH Host keys fingerprints for RSA and ED25519 are:

4096 MD5:fc:a8:00:5b:64:90:86:a1:fb:49:75:ef:55:58:90:b3 (RSA)
4096 SHA256:v48HAAAjr+avnPAESdQzazSriKYZeTGGtIPKfoE8Dg0 (RSA)
256 SHA256:SgvaiZyIgzujLJdbtRij5VGUOXm/IuAs3MkMYtGZNhc (ED25519)
256 MD5:3b:b0:1a:8a:ea:0a:e5:ea:bb:9e:bb:5c:ef:24:c3:92 (ED25519)

The SSH host key is as well listed on:

2018-01-31 11:00

The host mira holding the cronbox and login service will be upgraded to Debian 9 Stretch on 2018-02-05 at 06:10.

Upgrade of Server itetnas02

Status: Status/green.gif

2018-01-25 07:30
Upgrade completed.
2018-01-24 16:45

On 2018-01-25 around 06:10 we will upgrade the server itetnas02. Several short outages for Fileservices (Samba, NFS) are expected. Services for project accounts and dedicated shares for biwi, ibt, ini and tik are affected.

Outage of Server itetnas03

Status: Status/green.gif

2017-11-15 07:00
Battery unit replaced
2017-11-10 07:20

Server is back online but without battery unit. We will need to shutdown itetnas03 again once the problem is isolated and can be fixed.

2017-11-10 06:15
The server itetnas03 is down due to hardware problems (A battery replacement caused controller problems). ISG and the hardware vendor are currently working to get this problem solved.

User Home accessibility

Status: Status/green.gif

2017-11-08 06:25
Informatikdienste have reverted a change which caused the problems for accessing all user's HOME via the CIFS (SAMBA) protocol.
2017-11-07 08:00
All users' HOME are currently not accessible by CIFS (SAMBA) protocol. NFS access is still available.

Outage of Server ibtnas02

Status: Status/green.gif

2017-10-31 08:00
Upgrade successfully completed
2017-10-30 16:50
The server will be upgraded to a new OS release on 2017-10-31 starting around 06:15. Short outages of Samba and NFS services are going to be expected.
2017-10-25 10:00
ibtnas02 now serves all partitions but the problem is not yet identified
2017-10-24 15:00
The server ibtnas02 is up again (partition data-08 is not available)
2017-10-24 12:50
The server ibtnas02 is down again
2017-10-24 09:30
The server ibtnas02 is back online
2017-10-24 08:00
The server ibtnas02 is down due to hardware problems

Outage of Server itetnas03

Status: Status/green.gif

2017-10-23 18:15
Data are also accessible via NFS.
2017-10-23 9:30
The server is up. Data are accessible via Samba. NFS file service is still down.
2017-10-21 15:00
The server itetnas03 is down due to hardware problems

Outage of Servers in Serverroom ETZ/D/96.2

Status: Status/green.gif

2017-10-20 13:45
All racks in ETZ/D/96.2 are working again (cooling problem solved).
2017-10-20 10:00
The technician will arrive at 13:00 hours. Some servers are running, but without watercooling. So any rack might shutdown at any time if the air cooling is not sufficient. This will most probably again happen when the technician will be working in the room (i.e. this afternoon).
2017-10-19 18:30
The cooling engineer could not fix the problem, so some servers are still offline. Another technicial will try to fix the cooling system tomorrow morning.
2017-10-18 14:00
Cooling system is still not working correctly, we only selectively powered on a couple of compute machines.
2017-10-18 12:50
The problem has been localized and repaired. We need to wait that the circuit is cooling down.
2017-10-18 10:30
Outage of most racks in ETZ/D/96.2 (cooling problem) . Most compute servers are offline.

Outage Servers in Serverroom ETZ/D/96.2

Status: Status/green.gif

2017-05-13 20:00
Outage of some racks in ETZ/D/96.2. Several compute servers offline.
2017-05-13 23:59
Most of the servers are back online.
2017-05-15 08:45
Status of remaining servers verified. All back online.

Cronbox/Login Server migration: new SSH host key

Status: Status/green.gif

2017-03-24 17:00
The cronbox and login server has moved to a new host. A new SSH host key has been generated:
4096 MD5:fc:a8:00:5b:64:90:86:a1:fb:49:75:ef:55:58:90:b3 (RSA)
4096 SHA256:v48HAAAjr+avnPAESdQzazSriKYZeTGGtIPKfoE8Dg0 (RSA)

The SSH host key is as well listed on:


Always verify a fingerprint of a SSH host key before accepting it.

EE Mailsystem migration

STATUS: Status/green.gif Mailsystem up

2017-01-08 15:00
The new mailsystem is now started. In case of unattended problems we will stop it again to prevent data loss and to analyze the problem.
2017-01-07 24:00
Not all testcases could be performed. We now plan to enable the new system about noon.
2017-01-07 20:45
Old Mailserver Configuration migrated, starting the mailserver testing
2017-01-07 14:00
User mailbox data migrated, starting mailserver configuration migration
2017-01-07 07:00
All mail services are stopped. Mailbox data copy started.

Networkoutage ETH

STATUS: Status/green.gif

2016-02-09 08:20
ETH wide network outage due to hardware problems for the firewall infrastructure. In any case, please reboot your computer before continue.
2016-02-09 12:35
Network is back online and services are being recovered. Due to the hardware failure 53 network zones were affected. The problem got localized and resolved.
2016-02-09 14:25

Our systems should be all back to normal. In case you experience any problem please contact support via

Maintenance and service

STATUS: Status/green.gif

2016-02-10: 06:05

The server for the cronbox and login service is currently beeing updated from Debian Wheezy to Debian Jessie. The services will be temporarly unavailable.

2016-02-10: 12:00
Server update is done.

Archived status reports

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Status (last edited 2019-09-17 12:54:04 by alders)