NOTICE: Slow file access - September 26, 2016

Sysadmins are aware of an issue causing file access times to be slow. The issue was first reported on September 17, 2016. As a result, workstations and servers will lock up and cause massive lag times between user input and expected output.

We are still currently evaluation solutions and are working towards a fix.

If you are using a workstation, we suggest to try to use the acmguest account for now, while we work through this issue. The acmguest account is not reliant on accessing personal files, so lag times shouldn't be an issue.

We apologize for the inconvenience. If you have any questions, comments, and/or concerns, please feel free to contact the sigsysadmin mailing list.

Update (September 28, 2016): Sysadmins may have found the issue. It appears to be a switch malfunction. All systems seem to be nominal at this point. We will continue to monitor the situation and report on any additional issues that may have occurred.

Thanks,
Chase Lee
ACM/LUG Systems Administrator

NOTICE: Unexpected server downtime - Sunday, September 18, 2016

Sysadmins have been notified of a problem causing workstations to freeze up when accessing files within user's home directories.

We are currently evaluating solutions, which caused some unplanned downtime today (September 18, 2016).

We apologize for the inconvenience. If you have any questions, comments, and/or concerns, please feel free to contact the sigsysadmin mailing list.

Thanks,
Chase Lee
ACM/LUG Systems Administrator

NOTICE: Server downtime planned - Sunday, September 11, 2016

Hello All,

Sudoers plans on doing some maintenance on the ACM servers this weekend. Some intermittent downtime of server access is scheduled for this Sunday, September 11, 2016.

Please direct any questions to the ACM Listserv.

Noblesse Oblige,
Sudo

NOTICE: Server downtime planned between 12PM and 3PM Saturday March 19th

Hello,

Prior to the LAN party on Saturday the SIG Sysadmin group plans on doing some maintenance on the ACM servers. During this period the website, secure shell access, ACM email, and file access may not be available. We do not expect these services to be down to the entire duration of the downtime period and will be sending out additional mail notices before any services are actually taken offline the day of.

For those who will be in the office a little early on the 19th, access to the internet via the ACM LAN network is NOT one of the services that will be offline during this time. :D

Please direct any questions to the SIG mailing list: sigsysadmin@acm.cs.uic.edu

-Walter

Server Room Electrical Issues - 03/08/2016 [Closed]

Sysadmins are currently monitoring the server room due to an early morning electrical issue causing an electrical smell.  We do not know any further information at this time.

 

If you have any questions about this, please contact your friendly neighborhood Sysadmin at: sigsysadmin [at] acm.cs.uic.edu

 

Thank you for your patience,
Chase Lee
LUG President 2015-2016
ACM/LUG System Administrator

Unresolveable hostnames - 2/28/2016 [Resolved]

SysAdmins are currently looking into an issue causing most subdomains under *.cs.uic.edu to not resolve correctly.

 

Currently known affected domains:

  • acm.cs.uic.edu
  • acm.eecs.uic.edu
  • brink.cs.uic.edu
  • cuda.cs.uic.edu
  • dvorak.cs.uic.edu
  • hans.cs.uic.edu
  • linux.cs.uic.edu
  • lug.cs.uic.edu
  • malware.cs.uic.edu
  • sigbuild.cs.uic.edu
  • siggame.cs.uic.edu
  • swe.cs.uic.edu
  • wics.cs.uic.edu

If you have any questions about this, please contact your friendly neighborhood Sysadmin at: sigsysadmin [at] acm.cs.uic.edu

 

Thank you for your patience,

Chase Lee
LUG President 2015-2016
ACM/LUG System Administrator

 

Update #1 - CS DNS servers were restarted on Monday. Issue was resolved after that...

Degraded Service - 2/26/2016 - [Resolved]

SysAdmins are currently looking into an issue causing ACM services not to authenticate correctly.  We are currently looking into the issue and will announce more information via the website once we know more.

 

Current known issues:

  • Workstations cannot authenticate
  • acm.cs.uic.edu cannot authenticate AD users

If you see something broken, please report it to the systems mailing list:

sigsysadmin@acm.cs.uic.edu

 

Thanks you for your patience,

Chase Lee

 

Update #1 - This issue was caused by a malfunction in the cooling unit.  Engineers have been dispatched to remedy the issue.  Some servers automatically shutoff due to ambient heat.

Update #2 - Cooling unit is back up. Servers have been restarted.  Sysadmins will continue to monitor the situation for the rest of the day.

Server Maintenance Concluded

Update: All outstanding problems have been solved

Unfortunately this round of maintenance had some issues spark up on us and our window of instability was longer than we would have liked, but all services should be functioning normally at this point.

There are a couple exceptions:

  • ACM Mumble is currently down due to issues with it connecting to backend authentication
  • brink.cs.uic.edu is currently inaccessible as the host virtual machine did not start up correctly
  • acm.eecs.uic.edu is currently inaccessible as the VM hosting the beta for an updated website also failed to startup correctly

That said, there are things we may have missed while we put out the big fires. So, if you see something broken, please report it to the systems mailing list

sigsysadmin@acm.cs.uic.edu

 

Thanks for the Patience,

Walter

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