Technical Staff Blog

Author archives: Frank Pari

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Tstaff is working closely with CIS on an ongoing issue course group membership reporting that is affecting tools/scripts that depend on commands like id and groups. (This issue is directly affecting the handin script.)

Unfortunately, the problem is not consistent.  If you experience an issue where you seem to not be in a group ...

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Course Quality Assurance (Test) Accounts

Faculty and HTAs can now contact CAP@brown.edu directly for access to their course's quality assurance account. (a.k.a Course Test Account.)  If you're in the HTA group for a course that needs a Quality Assurance account, please coordinate with the other members of your group and email CAP@brown.edu ...

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Common SSH Issues/Fixes

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On August 24th, the ssh.cs.brown.edu gateway servers were upgraded to stretch and bound to the CIS OIM domain, ad.brown.edu.  The sunlab and mlab ssh client systems were also upgrade on that day and bound to ad.brown.edu.  As of version 7.0, the openssh server has disabled support for ...

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***We're looking for early adopters who are interested in beta testing a Desktop installation of Debian Stretch on their office machine(s).***

If you use a Tstaff managed desktop in your office and are willing to help us dig out the bugs for this roll-out, please email problem@cs.brown.edu.  We'll coordinate ...

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There was a short network outage at 5pm today, affecting some of our user managed machines in Room 310 and the department's Print Host.  While disabling a set of ports on the switch a port we were not suppose to have access to was also disabled, which severed that switch's communications with the ...

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https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=855434

The version of Chromium currently installed on our managed machines is affected by the bug described at the link above.  This bug prevents the browser from completing the necessary steps for a secure connection, which results in a generic error message.

For those using Chromium, until ...

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It was an interesting start to a Wednesday morning...

As you're probably already aware, there was a short blip in connectivity/functionality this morning that blocked our SSH gateway, logins and general use of the department's systems.  Our GPFS file system was overwhelmed, which resulted in a kind of traffic jam of requests ...

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During a routine update of our firewall there was an unexpected outage, which we are working to identify the cause of.  Most systems and connectivity have already been restored and the remaining systems will be brought back online in just a few minutes.

If you continue to have trouble after 4pm, please email problem@cs ...

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Brown Secure Wifi Cert Update

CIS has pushed an updated certificate for the "Brown" secure wireless network.  If you're having connectivity issues with one of Brown's wifi networks, please try connecting to the "Brown-Guest" network to visit https://wifi.brown.edu/ and follow the on-screen instructions to re-estabilish your connection to the secure network(s).

For further assistance ...

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Unfortunately, there is an issue with the Grid Master process which has rendered qstat, qsub, etc... unusable.  We're working on diagnosing the problem, now.  But, our Grid Engine guru is out of town, at the moment.

Any jobs that were submitted before the outage are still running and will continue to run, as expected ...