Differences

This shows you the differences between two versions of the page.

--- en:aktuelles [2021-07-29 15:42] – Thomas Thiel
+++ en:aktuelles [2024-01-05 09:43] (current) – Thomas Thiel
@@ Line 2: / Line 2: @@
 ====== 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 [[https://lists.iai.uni-bonn.de/mailman/listinfo.cgi/gsg-op|gsg-op@lists.iai.uni-bonn.de]]. 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 [[https://lists.iai.uni-bonn.de/mailman/listinfo.cgi/gsg-op|gsg-op@lists.iai.uni-bonn.de]]. We are using this list to announce technical issues, maintenance windows and the results of these proceedings.\\
-----
-===== 2021-07-27: unscheduled downtime of BigBlueButton, a b-it fileserver and some VMs =====
-**Update 15:40, 2021-07-29:** As we can already see by now, the restore will take until tomorrow, there are just too many small files inside the unix homes.
-**Update 9:51, 2021-07-29:** At this moment we already restored 4.5 of 7.5 TB of data (last backup ran at 2021-07-27 01:56:21) to the B-IT fileserver. We are hoping to finish the restore until the end of this day, so that we should be able to restore the availability of this service tomorrow morning at the latest.\\
 \\
-**Update 11:09, 2021-07-28:** most VMs are back online again. The UNIX Home Servers at b-it have to be restored from tape, which will still take a considerate amount of time.\\
-\\
-**Update 22:26, 2021-07-27:** the BigBlueButton Service is fully functional again.\\
-\\
-Due to problems with the storage backend of an older virtualization cluster, there are currently massive problems when using some VMs, in particular:
-  *  BigBlueButton Load Balancer (bbb.informatik.uni-bonn.de)
-  *  a central file server of the B-IT
-as well as the machines
-  * vm-wuebbel-01
-  * sentry
-  * mail-info4
-  * bbb4mm
-  * leonov
-  * inf1-srv-01
-  * login.bit.uni-bonn.de
-The affected systems are immediately shut down completely in order to accelerate the repair of the affected storage backend. After repairs have been completed, the systems will be moved to a newer cluster in the short to medium term.
-The central BigBlueButton IT service is also affected, the individual BBB servers are available (ongoing conferences are not affected), but new rooms cannot be opened or existing ones can be entered. I hope to be able to use the load balancer again tomorrow at the latest.
-I apologize for the inconvenience, we are working on eliminating the problem.
 ----
+===== 2023-12-11: Eduroam was out or order =====
-===== 2021-06-07 External Connectivity Issues =====
+<del>As the Universities Computing Center  [[https://unibonn.statuspage.io/|conveyed (see there for news)]], the [[en:Eduroam]] access is out of order.</del>
-Last night and today in the morning we had some connectivity issues due to a problem with our uplink to the Hochschulrechenzentrum (HRZ). The HRZ has issued a maintenance report regarding this incident:
+<html><div class="tpl_update">Eduroam is working again.</div></html>
-https://www.hrz.uni-bonn.de/de/betriebsmeldungen/1623044209514
+Members and students of the Computer Science department and the  B-IT can also use our own [[en:wifistd|wireless network "802.1X"]].\\
+\\
-The problem has been solved by now.
 ----
-===== 2021-05-31 Loss of All Network Connectivity. =====
+===== 2023-12-12/13: TVS maintenance window =====
-There has been a complete breakdown of all network connections
+<html><div class="tpl_update">The tutorial assignment system is operational again.</div>
-within computer science at about ~17:00 due to an error in the
+</html>
-Stack communication of our central router. Individual stack participants
-got into repetitive reboot loops. We could find the source of the problem
-and eliminate it. All services should be available again.
-----
+This semester's data will be available until end of semester.
-===== 2021-05-14 Downtime Staffhomes I/II/IV/V/theory/zentral ended. =====
-The staffhomes on these filesystems are available again, e.g. on login-staff:
-  * /home/I
-  * /home/II
-  * /labor/II
-  * /home/IV
-  * /home/V
-  * /home/theory
-===== 2021-03-30: Overleaf Instance in the C.S.Dept./B-IT =====
-For all users of the c.s. Dept and the B-IT, we are now maintaining an overleaf instance for collaborative publishing.
-More Informations about this [[en:overleaf|can be found here]]...
+<del>TVS will not be available on 12th and possibly 13rd of December //from 10am to 12pm,// while doing a software update.
+If you still need your data, please read them out before. This will also be possible afterwards, of course, </del>\\
+\\
 ----
-===== 2021-03-01: New SSH Login Servers  =====
+===== 2023-08-07: Change  of WiFi Certificate of C.S.dept. and B-IT =====
-We deployed two new ssh login servers for you:
+Today we did renew the certificate for our wifi infrastructure. At the same time we switched over to the new certification authority hosted by the DFN (GEANT, just like the HRZ did some days before, you may remember the mail about eduroam).
-for staffers: login-staff.informatik.uni-bonn.de
+This means that all wifi configurations of your devices that are used to
-for students: login-stud.informatik.uni-bonn.de
+connect to the computer science dept. or the b-it (eduroam-cs and
+.1X) have to be reconfigured to check for the new certificate/and
+or CA.
-The new fingerprints are available at the usual URL:
+You will find the current [[en:wifistd|fingerprints and certificate downloads]] at the usual place.
-https://gsg.cs.uni-bonn.de/doku.php?id=en:ssh:fingerprints
-The old servers will be available for you until friday (2021-03-05,
-:00am). At that time we will shut them down and redirect their DNS
-names to the new servers for some time to aid your migration there.
+The VPN service is *not* affected by these changes.\\
+\\
 ----