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en:aktuelles [2018-10-04 15:46]
en:aktuelles [2020-10-22 18:02] (current)
Ignatios Souvatzis [2020-10-21: External Network Outage] finished.
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-~~NOTOC~~+ ~~NOTOC~~
 ====== News and Service Indications ====== ====== News and Service Indications ======
 Here you will find recent Information and service indications for our infrastructure. If you are interested to receive these informations via email, please subscribe to [[|]]. We are using this list to announce technical issues, maintenance windows and the results of these proceedings. Here you will find recent Information and service indications for our infrastructure. If you are interested to receive these informations via email, please subscribe to [[|]]. We are using this list to announce technical issues, maintenance windows and the results of these proceedings.
 +===== 2020-10-21: External Network Outage  =====
 +After a small Powerdisruption, all external network connections were down for about 20-30 Minutes. The local infrastructure of b-it and c.s.dept. was unaffected by this incident. 
 +The Mailserver (which is located in the HRZ, which was affected more severly than us) will be available as soon as possible. Please be patient.
 +**Update** The Mailserver is available again.
 ---- ----
 +===== 2020-10-17: Maintenance Window for the Network Infrastructure of the Serverrooms of C.S. Dept and B-IT =====
-===== 2018-10-04Change Account Registration and Extension =====+At Saturday, the 17th of October 2020, beginning at 10:00 and lasting up to 17:00, the complete network infrastructure of the serverrooms of both the c.s. dept and the B-IT will be down for software upgrades. This will affect the whole IT-infrastructure of both institutes.
-The creation and extension of accounts became 02.10.2018. converted to a new graphical system. It is used as an alternative to the well-known text terminal. +---- 
-Accounts and extensions in the main subject require a valid mail address (or s5 .., s4 .., ...). Please take care to avoid umlauts (ä, ö, ü, ß) when renewing or renewing the application. The password must consist of the following components: +===== 2020-09-28: The Aftermath of a Power Outage =====
-   At least one capital letter (A, B, C, ...) +
-   At least one lowercase letter (a, b, c, ...) +
-   At least one number (0, 1, 2, ...) +
-   At least one special character (except '*'+
-   - At least 10 characters long+
-Account extensions are usually in the period 01.11.-30.11. possible. Please note the warning via e-mail.+Due to a power outage in the early morning, there were massive connectivity problems throughout the university networks
-For questions, problems or errors please contact the GSG (room 0.014 / 0.009).+In the computer science dept., all systems without direct UPS-support were affected, but these problems should all be fixed by now.
 ---- ----
-===== 2018-09-14Maintenance WiFi Networks =====+===== 2020-09-22Changes for wireless networks CP1GUEST and EDUROAM-CS ===== 
 +Due to routing changes of the abovementioned networks, we anticipate a few discontinuities for them. If you have a CS/B-IT account, we remind you that you should better use [[en:wifistd|our internal network ''802.1X'']] (which most likely won't be affected this time). 
 +//Update:// The activities have been terminated for the time being. 
 +===== 2020-09-17: Maintainance of Internet Connection: finished  ===== 
 +Due to maintainance of the Internet connection, individual services might be disconnected for a short time today. Normally, you can reconnect right away. 
 +===== 2020-09-01: New Service: Matrix IM  ===== 
 +We just finished the deployment of a node of the instant communication network. More info can be found [[en:xmpp|here]]. 
 +===== 2020-08-17: Maintainance of Account server  ===== 
 +The maintainance of the account creation and renewal website, startup, is finished. 
 +===== 2020-08-10: DNS Resolving last Weekend  =====
-Due to the continued problems with our core router, we are trying to take some load away from it by changing the routing configuration of our WiFi Networks to other componentsBecause of that you can expect some outages of the wifi throughout the day.+From sunday, ~13:00 up to today, ~9:30, we experienced minor problems throughout the entire network of the c.s. dept and the B-IT due to a failing primary nameserver. The problem was corrected by now.
 ---- ----
-===== 2018-09-05: Status of the core network routing problem =====+===== 2020-05-03Mailservice temporarily down =====
-We just experienced another network outage, which was intended this time to collect data for the problem analysis of the hardware vendorWe continue to work on a solution, utilizing our support contractor and the hardware vendor.+Due to failed network equipment in the HRZ the mail server is offline at the momentPlease be patient while the problem is solved.
-By now we punched down the possible suspects to the IPv6 core of the routerwhich now remains disabled to ensure a stable IPv4 operation.+UPDATE: the problem has been solved, the mail service is available again. 
 +===== 2020-04-24: Discontinuation of OSP Videostreaming ===== 
 +Due to massive problems with the software Backendwe had to shut down our streaming services on the OSP server permantly.
-We thank you all four your continuous patience and support. 
 ---- ----
 +===== 2020-03-18: Reduction in attendance times due to COVID-19 =====
-===== 2018-09-03: Further problems with our central network routing components =====+Due to the special situation we find ourselves in these days, we decided to reduce our attendance service to the absolute minimum possible for the foreseeable time. Further information is available [[en:covid-19|here]].
-As the recent proceedings in patching up our central routers were not successfulwe are continuing to experience massive problems with our core network, resulting in massive performance issues and complete blackouts of network connectivityThis problem is of a non-trivial naturewe are continuing to investigate the issue, utilizing our support partners and the hardware vendor itself.+---- 
 +===== 2020-03-05: Availability of the Computer Pool Rooms U1.012U1.041U1.042 =====
-At the moment we seem to have pinned down the problem to the IPv6 core of the routerTo stabilize the situation as good as possible, we have disabled IPv6 routing for the time being, hoping to reactivate it after resolving the problem.+After the end of the [[|Schüler-Krypto 2020]], the above mentioned pool rooms and the computers in there have been returned to their regular use. 
 +===== 2019-06-25: Update Status Imagine Premium/Microsoft Azure Dev Tools =====
-Please continue to be patient and remember that the whole setup in this building is completely new, some problems simply were to be expected.+By now a registration using the university email address is possible. More information available on [[en:microsoftimagine|this page]].
 ---- ----
 +===== 2019-06-25: Status Imagine Premium/Microsoft Azure Dev Tools =====
-===== 2018-08-31: Maintenance window of central network routing components =====+Since Microsoft changed the name of the program from "Imagine Premium" to "Azure Dev Tools for Teaching", they changed the requirements for registration to the program portal, too. As for now, an institute email address is required for registration. As newer students are not longer provided with one of these, only older students with an old address are able to register. Microsoft is working on a solution to this problem, but as for now, there is no workaround. So we cannot provide you with access to the program at the time-being.
-In the time between 7:30 a.m. and 9:00 a.m. we will update the central routing componentsAs direct result there will be total network service outages during this period in the whole c.s. dept. and the b-it. We apologize for the inconvenience.+---- 
 +====== 2019-06-24Loss of central Storage at B-IT ====== 
 +Last Friday around noon we experienced total loss of several central components of our userstorage for UNIX (NFS) and Windows (SMB)Sadly we had to realize that we lost a rather important large storage component completely, so we had to recover the affected storage areas from our backup to alternative server systemsBecause of that, certain loss of data in the confines of the regular backup schedule (usually daily in the night) has to be expected. 
 +The data rescue operation is completed by now, all services were restored again.
 ---- ----
-===== 2018-08-28Outage of network connectivity =====+===== 2019-05-29New Host Keys login.bit =====
-We just experienced a breakdown of the central routing components of the c.s. dept and b-it. the problem was corrected and we are investigating the cause.+The SSH Login Server of the b-it was reinstalled and received new host keys. If you want to verify, please refer to the following fingerprints:
-Thank you for your patience.+SHA256:
 +| SHA256:xfo6iWzDsy0MwsKCX1qISP6Q7fuAmeDxlmZI3kiFX1g root@login2 | (ECDSA) |
 +| SHA256:xMB8gcZWBVR+5xCDqHpxDkY81oRClxV2HFl1Ft7HKYM root@login2 | (ED25519) |
 +| SHA256:QhXyzQWSI6BMGCjafXbgA+UVRLpgtfhPGXr90jNAZ3k root@login2 | (RSA) |
 +| MD5:e5:ab:e3:80:bb:83:ba:b0:bb:df:d3:aa:a7:94:c5:1d root@login2 | (ECDSA) |
 +| MD5:b0:d5:91:48:17:9e:70:b5:de:48:66:6c:21:14:37:fc root@login2 | (ED25519) |
 +| MD5:3d:8e:c3:d0:33:80:c7:a6:e5:30:6f:c4:da:8b:56:5d root@login2 | (RSA) |
 ---- ----
 +===== 2019-05-20: eduroam, eduroam-cs and the new certificate =====
 +Until the replacement of the eduroam-cs certificate within IT, the certificate specified [[en:eduroam|here]] must still be used when connecting to eduroam-cs! We will have completed the conversion to the new CA within the next few days, so you can also use the new certificate within eduroam-cs, as stated in the HRZ newsletter. We will announce this accordingly here.
-===== Commissioning the new print account =====+---- 
 +===== 2019-04-29: No Audio available in Room 0.107 =====
-The printing system known from the Römerstraße is online in a revised version since Monday, 06.08.2018Further information can be found in the tab "[[en:print | Print Services]]".+Because of a device defect, there is currently no audio available in room 0.107Please bring your own speakers or contact GSG for alternativesWe hope that the replacement amplifier will be installed during week 19.
 ---- ----
 +===== 2019-04-16 11:45: Takeover of the regulated help desk operation =====
 +From now on, access to our IT Helpdesk in room ** 0.014 ** is open to all students and staff at regular core times. There, we are happy to answer your questions about the IT infrastructure and solve your technical problems.
-===== Guest WiFi available for Workshops and conferences etc=====+The help desk is staffed at the following core times: 
 +^ Weekday ^ core time ^ 
 +| Mon | 10-14 pm | 
 +| Tue-Thu | 12-16 pm | 
 +| Fri | 12-14 pm | 
 +Please refrain from contacting our staff in other offices (except transponder matters) so that we can do our job properly.
-For any sort of special event or just for short-time guests we are now offering temporary access to our WiFi infrastructure through a sponsored [[en:guestaccounts|guest portal system]]. If you are hosting an such event or awaiting guests, please [[|contact us]] for further information. 
 ---- ----
 +===== 2019-04-12 10:00: DNS resolver has been switched off =====
-===== WiFi network will be down on Friday 2018-07-20 =====+The DNS resolver had been replaced by
-<HTML><div style='background:#CAF2C1;padding:5px;border:2px solid #00C000'><span style="color:green;font-weight:bold;">UPDATE:</span> we successfully finished the maintenance on the wifi components. All services are back up again.</div></HTML>+ 
-\\ +a few weeks ago and has been turned off on FridayApril 12th, 2019, 10:00 local time.
-Due to maintenance on the primary WiFi infrastructurethe WiFi networks of C.S. Dept. and B-IT will be partially down during the morning.+
-Please be patient, we will announce the end of the works here.+(We will return our temporary network to the University 
 +Computing Center shortly.) 
 +Most machines (computersprinters, scanners, etc.) are configured by DHCP 
 +automatically and have switched already, We have told about others, that we 
 +had detected, to the colleagues in the work groups that manage them.
-Thomas Thiel\\ +Should there still be machines that are manually configured to use 
-GSG+ by the users themselves: you have to change the DNS resolver 
 +setting to the values shown above. However, as far as we can see, 
 +there are only a few left, that are already known to their 
 +administration. So the only problematic machines are such that were 
 +switched off for the last few days. 
 +===== 2019-01-29: Scanning from the multifunction device "feder" in the BYOD room (U1.040) ===== 
 +It is now possible to scan from "feder" not only onto a USB storage device, but also into an E-mail. You have to  
 +login first, using the display of "feder" ("Alternate Login").  
 +Please don't forget to log out afterwards.