Linux Working Group

Meeting Date

• TEAMS: 2023-03-22

Invited

• Anthony (group leader), Clayton, Guoxiang, Lori, Fraser, Devon, Nathan, Nick, Todd, Dave, O

Attendees

• Anthony (group leader), Clayton, Guoxiang, Devon, Nick, Todd, Dave

Review and accept previous meeting minutes.

• CsLWGMeeting20230322

Review last meeting's Action Items

• suexec-flex https://rt.uwaterloo.ca/Ticket/Display.html?id=950947
  • Is there a .deb package at this point that is ready for distribution?
    • nfish is working on it, progress happening ...

New Items

• Homedirectory quotas (a2brenna)
  • email survey went out to instructors - 100 GB baseline quota should be more than adequate
  • some course accounts are > 100 GB
  • there exists some users using > 1TB of space. These accounts will need to be informed that they are over quota
  • last snapshot of teaching is from the 29th - snapshots were disabled to investigate the linux student environment issues
  • Clayton has a script to allocate home directories will also detect homepath mismatch problems - won't be creating ssh keys (just the .ssh directory and authorized keys file)

• linux.student.cs issues - we met a new uptime record
  • clients are getting evicted after 240 seconds of timeout
  • final assignments for this term are Mon, April 10
  • new memory has been ordered to help address the memory load issue
  • some users were using > 4GB of memory (coming from the cpptools extension in VS Code)
• Todd to provide disk quota use per student per term for Open edX use
• For the next meeting, think about and supply suggestions /etc/security/limits.conf
  • currently limiting users to 64 GB of RAM (in TEACHING) using cgroups
  • CPU limits can be limited by cgroups
• Announcement for switchover to 2204, demise of 1804, linux.* to become ubuntu 2204 on May 7/8

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