Blog from May, 2012

On Thursday 31 May 2012 between 07:00 and 08:00 local Bremen time servers and network components will be updated.

Server and network operations will be unreliable. Expect unavailable servers and sudden downtimes of services without prior explicit announcement.

If you have to work on files stored on the server during that time, then before the maintenance hour copy the respective files to your local hard disk, work on it locally, and after finishing your work and after the end of the maintenance interval, copy them back onto the server.

For more details on the maintenance hours see the Maintenance Hours page.

To unclutter the public teamwork dasboard, i.e. what is seen while not logged in with a JACOBS user account, the changes to spaces have been made as listed in the table below.

(lightbulb) It is almost never correct to set permissions for the group confluence-users. See Groups to use for assigning permissions for details.

Please check the spaces you have created and are maintaining, if the permissions are set reasonably and if your spaces are still relevant - if not, please remove them, or move the content to a more relevant space and remove the old one.

Space

Anonymous view permission removed

Anonymous content creation/removal permission removed

Spam comments on home page removed

Permissions for group confluence-users removed

Additional comments

Academic Affairs Committee 2009 - 2010

(tick)

(tick)

(tick)

(tick)

obsolete

Ankur Modi

(tick)

(tick)

  

not a personal space, has left the university

Astroparticle Physics graduate seminar

 

(tick)

(tick)

  

Astro software on CLAMV

 

(tick)

(tick)

(tick)

 

BBQ Booking

 

(tick)

 

(tick)

 

BCCB Critical Reading Seminar

 

(tick)

 

(tick)

 

BCCB Society Official Space

(tick)

(tick)

 

(tick)

Nothing in there

Berserks

 

(tick)

(tick)

  

Bijay Devkota

    

Space removed. Was a personal space, user has left university, no content.

Biology2008

(tick)

(tick)

 

(tick)

Info from 2008, user has left university

B-Link!

 

(tick)

 

(tick)

 

Board Games Club

 

(tick)

   

bubble

    

Space removed. User has left university, was only admin, content was a single mp3.

Chem Eng HW

    

Space removed. Was seemingly a personal space, empty, last edit 2007, user has left university.

Class of 2007 BBQ

    

Space removed. Obsoleted, no other content than date announcement, riddled with spam.

colors

(tick)

(tick)

  

Obsoleted. User has left university. Should be removed.

Courses (2008,Fall): Advanced Lab Course Biochemistry and Mo(...) - 520231

(tick)

    

Computer Science Meeting Room Booking Schedule

 

(tick)

(tick)

(tick)

Spam comments from 2010 and 2012

Courses (2008,Fall): MoLife Seminar I - 530431

(tick)

(tick)

   

Courses (2008,Fall): NatSciLab Unit Computer Science I - 320111

(tick)

    

Courses (2009,Spring): ESS Seminar II - 210342

(tick)

    

Courses (2009,Spring): Quantitative Analysis of Biochemical Ex(...) - 520331

(tick)

    

Courses (2010,Fall): General Electrical Engineering I - 300101

(tick)

    

Courses (2010,Spring): Quantitative Analysis of Biochemical Ex(...) - 520331

(tick)

    

Courses (2011,Fall): General Electrical Engineering I - 300101

(tick)

    

Courses (2011,Spring): General Electrical Engineering II - 300102

(tick)

    

Courses (2012,Spring): General Electrical Engineering II - 300102

(tick)

    

Dance Room Yellow

    

No content except calendar from 2008, riddled with spam content. Space removed.

Dancestoned 2007

    

Obsoleted, user left university 2008. Space removed.

Deepawali

    

Single content is announcement for event 2008. User has left university. Space removed.

devashish

(tick)

   

Single content of 2007, looks like a personal space, but isn't. Please review.

Directory of Sustainable Actions(tick)   old content, space cluttered with spam (updated 2012-07-05), users have left university.

dtestSpace

    

Space removed, obviously a test, and empty, and broken, no content.

DUCS (Developers of University Community Spirit)

(tick)

(tick)

(tick)

  

Dynamical Systems and Control

    

No content except excessive spamming. Space removed.

Dynamics of Marine Systems

    

No content except excessive spamming. Space removed.

Earth & Space Sciences

 

(tick)

(tick)

(tick)

 

East Wing PhD Area

 

(tick)

(tick)

(tick)

 

EU2009

(tick)

  

(tick)

Last content from Sept. 2009

Energy and Culture

    

Empty space of 2007, user has left university. Space removed.

Exploration of the universe

    

Space of 2008, user has left university, riddled with spam. Space removed.

Fall Games 2009

(tick)

  

(tick)

Obsolete. Space should be removed.

Fall Games 2010

(tick)

(tick)

(tick)

(tick)

Obsolete. Space should be removed.

Food Committee

 

(tick)

   

BCCB1Midterm

(tick)

  

(tick)

The only space user has left the university. Space should be removed.

GenBioTut1    No content except spam. Space removed.
GenBio2Tut(tick)(tick)(tick)(tick)Only remaining user has left university. Remaining massive spam content not removed.
GSA CONSTITUTION(tick)  (tick)working space of 2009. resulting document is at http://gsa.jacobs-university.de/docs/GraduateConstitution.pdf Only remaining user with admin rights has left university. Space should be removed.
Halloween    Space has no content, single user has left the university. Space removed.
INO2009G(tick)(tick)  Only remaining user has left university. Spaces should be removed.
International History    Only content is one page of personal notes of 2007 of user who has left the university. Space removed.
Jacobs Ambassador Program    Space was created 2008 and has no content until today. Space removed.
BVB(tick)(tick) (tick)Incomplete, obsoleted, only user has left the university. Space should be removed.
JEC(tick)   Has no real homepage, calendar is dysfunctional, last edit of 2009. Space should be removed.
jfg(tick)   Obsolete, last edit 2007. Space should be removed.
Jacobs Fall Games '08(tick)(tick)(tick)(tick)Obsolete, last edit 2008. Space should be removed.
jmascot(tick)(tick)(tick) Obsolete, last edit 2010, single remaining user has left university. Space should be removed.
jFood    Dysfunctional, last edit 2008, only user has left university, space riddled with spam. Space removed.
jIEEE Club    

User has removed all pages, but didn't remove the space itself. Space removed.

Logistics Kruppies Year 2010    Only content is about attending an event in 2009. Obsolete. Space removed.
Logistics Chain download    Downloads for a congress of 2009. No downloads there, but lots of spam. Only remaining user is intern who left the university. Space removed.
Logistics trip to Berlin    Only content was single page about a road trip in 2008. No other content. uses various dysfunctional macros. Space removed.
Lunch break workout for staff and faculty    User has removed all pages, but didn't remove the space itself. Space removed.
MCO(tick)(tick)(tick) Text sais its supposed to be internal.
MCR (tick)(tick)  
MFR(tick)   Newest info was from 2008, and the text sais its supposed to be internal.
oqm(tick)(tick)(tick)(tick)Obsolete. Space should be removed.
Mohammed Ahmed Robot and Fun Space    Created in 2006, no content, should be personal space, user has left university. Space removed.
Mr. and Mrs. Jacobs University    Coming soon 2008, only user has left university. Space removed.
My Personal Space    Dashboard-spaces are not to be used as personal spaces. Last content from 2010, user has left university. Space removed.
Olympix Pictures and Videos 2007    Empty space, removed.
Olympix 2007    

Empty space, removed.

Olympix 2007(tick)   Obsolete. Space should be removed.
Olympix2008(tick)  (tick)Obsolete. Space should be removed.
Official 2010 Olympix Page(tick)  (tick)Obsolete. Space should be removed.
Pallav    Personal space of user, last update 2009, user left university. Space removed.
Radio(tick)  (tick)Last update 2009, only user has left university. Space should be removed.
Psychology ClubCDP(tick)(tick)(tick) Last update 2007, lots of spam, only remaining user has left university. Space should be removed.
Public Relations Club    Coming soon 2008, last edit Jan 2008, user has left university. Space removed.
Research Center Proposals    User has removed all pages, and left university, but left space. Space removed.
Research Group    Empty space of 2008, user has left university. Space removed.
Research Group    Rudimentary personal space of 2008, user has left university. Space removed.
ra2009(tick)  (tick)Obsolete. Only user left university. Space should be removed.
SER (Service Auction 2009)(tick)  (tick)Obsolete. Only user left university. Space should be removed.
auction2010(tick)   Group "Guest" has been removed. Obsolete. Space should be removed.
ServAuc(tick)(tick)  Obsolete. Spaces should be removed.
SHSS Studies    User has removed all content. Space removed.
Simon_Test    Obvious. Space removed.
SimPlume(tick)(tick)  Space of 2007 and only lots of spam since then. Space should be removed.
SSCC(tick)   Last edit 2007. Space should be removed.
sports(tick)   User has moved content to https://www.jacobs-university.de/campus-activities and removed home page. Space should be removed.
Sporthall I    The only content is a calendar, last edited 2010. Has spam. Sport Hall I doesn't exist anymore. Space removed.
Spring Oweek'09    Space of 2008, obsolete, no relevant content, last edit 2008, only user has left university. Space removed.
Stereotypes, Prejudice & Discrimination 2011    Created Sep. 2011, no content. Space removed.
student advising    Created 2008, only content is massive spam. Space removed.
StudentPix    "Under contruction" since Nov 2008, no content, only user left university. Space removed.
Students for the Exploration and Development of Space (SEDS)- Jacobs University Chapter    User has removed all content, left the space behind, left university. Space removed.
study group spring (development economics)    Obsolete personal content of 2010, all users have left university. Space removed.
Molecular mechanics tutorial    Empty space of 2008, user has left university. Space removed.
Teodora Chitiboi    Empty personal space of 2010. Space removed.
test1wq    test of 2007, only user has left university. Space removed.
Theatre(tick)(tick)  User has removed home page, last edits of 2008, space should be removed
The Grand Undergraduate General Assembly    Empty space of 2008, only user has left university. Space removed.
The Jacobs Song    Last edit 2008, only user has left university. Space removed.
Logistics(tick)(tick)(tick) Last edit 2009. Space should be removed.
Think Tank    User removed home page, last edit 2007, spam, only user left university. Space removed.
Transdisciplinarity Discussion(tick)(tick)(tick) Last edit on only page 2009, spam, only user left university. Space removed.
biobiz(tick)(tick)(tick)(tick) 
USGReports(tick)(tick) (tick)Last edit 2009, only user has left university. Space should be removed.
VCGL(tick)   Last edit 2009, lots of personal user information.
Yanzhe Fu    Personal space of 2011, spam, user has left university. Space removed.

 

 

On Thursday 24 May 2012 between 07:00 and 08:00 local Bremen time servers and network components will be updated.

Server and network operations will be unreliable. Expect unavailable servers and sudden downtimes of services without prior explicit announcement.

If you have to work on files stored on the server during that time, then before the maintenance hour copy the respective files to your local hard disk, work on it locally, and after finishing your work and after the end of the maintenance interval, copy them back onto the server.

For more details on the maintenance hours see the Maintenance Hours page.

Unfortunately, the updates to the Jacobs Email system took longer than tested beforehand and was available again only at around 08:45. On the bright side, the teamwork update update was faster than tested.

The new version of Confluence driving this very teamwork system will bring many new features and a fresh new look. See yourself:

You can read an overview of the features here and the complete change history of Confluence versions is available here.

But, some features were also removed or have drastically changed, most notably:

  • The "Left Navigation Theme" is no longer available, and the "Documentation Theme" is the new default layout. If you want your previous menue shown on your space, please follow the guide 150. Creating a custom navigation menue.
  • The "calendar" macro is deprecated and read-only. Adding new calendars or new content to existing calendars is no longer possible. You need to find a work-around, e.g. by using lists or tables.
  • The "podcast-channels" macro has been disabled due to poor system performance.
  • Wiki markup notation has almost vanished from sight, a spiffy editor has taken over.
  • Invitation of external users into spaces is currently not available. You need to provide email address, full name, and the groups to add new users to to Service Desk for Faculty and Staff until Confluence 2.4.5 supposedly solves this dysfunctionality.
  • teamwork honors browser language settings. In particular, if your browser prefers to get German language web pages, Confluence will deliver. See Change your Internet Explorer language settings if you want to change that.

The Confluence software running the teamwork system needs to be updated to solve a recently discovered issue.

To resolve this situation quickly and restore the temporarily inactivated features soon while at the same time minimizing the availability impact of the updates, we will perform the required updates in several steps.

The first update will be on Tuesday May 22, 2012, in the morning. During the update, teamwork will be inaccessible for about two hours, but will be available again at around 09:00.

The following updates will be announced on this page.

Info Update 2012-05-22

The next update will happen during the coming Maintenance Hour on Thursday May 24 starting at 7 am. teamwork will not be available until about 10 am. This will be the last update for now.

Please familiarize yourself with the changes of the new software by reading teamwork feature changes after Confluence update 2012-05-24.

Info Update 2012-05-23

During the previous system upgrade JACOBS accounts have not correctly been imported into space-local permission gruops. This is only relevant, if the "Invite" feature has been used in a space, and the then-created local space group has been amended manually with JACOBS accounts and then the group has been used for assigning permissions.

We will restore space-local group composition after the final upgrade to the most recent software version tomorrow.

Info Update 2012-05-24

Local group compositions have been restored to the state before migration.

Info Update 2012-05-25

The freshly updated Confluence system ran somewhat unstable and needed several manual reboots. We have now applied additional fixes according to https://jira.atlassian.com/browse/CONF-25236 and haven't had any new issues since.

To resolve recent availability issues of Jacobs Email we have to switch to a changed setup. To get reliability back as fast as possible we will not wait until the next Maintenance Hour (or the next hiccup, whichever comes first), but will switch to the new solution already today on May 21, 2012, at around 14:00.

If all goes well, this will be less noticeable than previous hiccup issues, clients will seamlessly reconnect, the web interface will require a new login. If not all goes well, Jacobs Email might be unavailable for a few minutes.

Following a recent vendor advisory to mitigate risks with confluence we have disabled several features in teamwork, including anonymous access, WebDAV, and API access. (warning) Until these features are re-enabled, you need to login to teamwork to access content!

Due to the extent of the changes required to fix the vulnerability, it is not possible to provide patches that resolve the issue without compromising the reliability of Confluence. You must upgrade to fix this vulnerability.

The disabled features will be re-enabled after we will have updated teamwork in the next days to a version of the software which fixes the issue. Please see another IRC-IT blog entry for the teamwork update.

Info Update 2012-05-24

All previously disabled features have been re-enabled, and teamwork is accessible again for anonymous users. 

Issue

Access to the Jacobs Email (aka Exchange) server has sporadic hickups. This might result in the web interface https://exchange.jacobs-university.de/ being unreachable or Outlook spontaneously loosing server connection. IMAP and POP connections might also be affected.

This affects only some of the Jacobs community.

Cause

The network load balancer (NLB) has issues. It does not distribute the load between all available access servers appropriately. Instead, most connections are sent to only one host. This leads to that one host being overburdened and either rejecting connections or not answering in time to prevent timeouts.

Workaround

Outlook will reconnect automatically. For other access channels, please try again.

Our Actions

As a short term measure, we are assigning more resources to the access servers to deal with the errorneous load increase.

In parallel we are setting up a different software-based load balancer solution to replace the current one, if the immediate measure does not have effect.

The mid-term solution is to either deterministically identify and fix the root cause of the issue of the current NLB setup, or to substitute the current NLB with a hardware-based solution.

Resolution

Upping the assigned resources seemed to have helped. No more issues appeared after 16:45.

On Thursday 17 May 2012 between 07:00 and 08:00 local Bremen time servers and network components will be updated.

Server and network operations will be unreliable. Expect unavailable servers and sudden downtimes of services without prior explicit announcement.

If you have to work on files stored on the server during that time, then before the maintenance hour copy the respective files to your local hard disk, work on it locally, and after finishing your work and after the end of the maintenance interval, copy them back onto the server.

For more details on the maintenance hours see the Maintenance Hours page.

Network connection lost in NC C, and easterly parts of NC B and NC D

One of the switches in the data room stopped responding on Sun, May 13th, at 5.30 p.m., for reasons unknown.
This morning connectivity has been restored.

Issue

Access to the Jacobs Email (aka Exchange) server has sporadic hickups. This might result in the web interface https://exchange.jacobs-university.de/ being unreachable or Outlook spontaneously loosing server connection. IMAP and POP connections might also be affected.

Cause

One of the access servers has issues with its network connections, thereby disturbing network connectivity of the other servers. To circumvent the issue, we are moving (virtual) stuff around, which can lead to continued hickups until the root cause is resolved.

Workaround

Outlook will reconnect automatically. For other access channels, please try again.

Update 14:15

There was just now a power issue on campus, several devices failed. The SCC seems to near its completion... (sad)

We are on it.

Update 22:00

All Problems solved and all affected mailservers are up and running again.

Update May 11th

Issues creeped up again and were resolved until 09:15. We are looking for a replacmeent of the current load balancing solution.

On Thursday 10 May 2012 between 07:00 and 08:00 local Bremen time servers and network components will be updated.

Server and network operations will be unreliable. Expect unavailable servers and sudden downtimes of services without prior explicit announcement.

If you have to work on files stored on the server during that time, then before the maintenance hour copy the respective files to your local hard disk, work on it locally, and after finishing your work and after the end of the maintenance interval, copy them back onto the server.

For more details on the maintenance hours see the Maintenance Hours page.

On Thursday 03 May 2012 between 07:00 and 08:00 local Bremen time servers and network components will be updated.

Server and network operations will be unreliable. Expect unavailable servers and sudden downtimes of services without prior explicit announcement.

If you have to work on files stored on the server during that time, then before the maintenance hour copy the respective files to your local hard disk, work on it locally, and after finishing your work and after the end of the maintenance interval, copy them back onto the server.

For more details on the maintenance hours see the Maintenance Hours page.

This is an automatically generated measurement of key performance indicators (KPIs) of Application Provisioning Services for April 2012.

The list of other KPI measurement reports is at KPI Measurements.

KPI Summary Table

KPIs Specified

Not Measured (warning)

Targets Met (plus)

Targets Failed (minus)

13

0

12

1

KPI Measurements

If the specification is met, a (plus) is in the Met column, else a (minus); KPIs not measured have a (warning) there.

SLA

Host

Service

Target

Measured

Met

Remote Login Shell Service

login

SSH

99.000000%

99.998%

(plus)

Teamwork Service

hermia

HTTP

99.000000%

100.0%

(plus)

 

 

HTTPS

99.000000%

100.0%

(plus)

Faculty Web Service

facultyweb

FTP

99.000000%

99.636%

(plus)

 

 

HTTP

99.000000%

99.989%

(plus)

 

 

HTTPS

99.000000%

99.989%

(plus)

SJIRA01

sjira01

HTTP

99.000000%

99.979%

(plus)

 

 

HTTPS

99.000000%

41.632%

(minus)

 

 

SSH

99.000000%

99.996%

(plus)

Alumni Email Server Service

helena

HTTP

99.000000%

100.0%

(plus)

 

 

POP3

99.000000%

100.0%

(plus)

 

 

IMAP

99.000000%

100.0%

(plus)

 

 

SMTP

99.000000%

100.0%

(plus)

Additional Services Information

The following Server Hosting Services are measured as a convenience for the Service Customer to ease service maintenance.
IRC-IT is not responsible for ensuring quality and achieving KPIs of these services.

SLA

Host

Service

Measured

CampusNet Server Service

scnweb01

SNMP

99.999%

 

scnapp01

SNMP

99.997%

 

scnsql01

SNMP

97.69%

WebServer Service

swebsrv01

HTTP

99.946%

 

 

HTTPS

99.984%

 

 

SSH

100.0%

 

swebdev01

HTTP

100.0%

 

 

HTTPS

(not measured)

 

 

SSH

100.0%

 

swebsvn01

HTTP

(not measured)

 

 

HTTPS

(not measured)

 

 

SSH

100.0%

Schomäcker Server Service

sschomkr01

SNMP

99.996%

 

 

MSSQL

99.993%

GiroWeb Server Service

sgiroweb01

SNMP

100.0%

 

 

HTTP

97.663%

 

 

MSSQL

99.995%

Alumni Application Server Service

alumniweb

HTTP

100.0%

 

 

HTTPS

(not measured)

Career Service Center Server Service

csc

HTTP

100.0%

 

 

SSH

100.0%

SLA Counseling Center

scouncil

HTTP

(not measured)

 

 

SSH

(not measured)

ALEA Server Service

alea

HTTP

100.0%

IRC-IR Institutional Repository DSPACE

sdspace

HTTP

99.993%

 

 

HTTPS

(not measured)

 

 

SSH

99.993%

SLA Torrent Seeder Geoscience SOPENDTECT

sopendtect

SSH

99.998%

Graduate Student Association Server SLA

sgsa

HTTP

99.984%

 

 

SSH

99.979%