Handling inappropriate processes on the login node

[wwarriner]

How to identify

Function to identify processes (Mike may have updates)

function cheaha-login-proclist() {
  ps \
    -eo user,pid,ppid,pcpu,pmem,stat,start_time,etime,cmd \
    --sort=-pcpu,-pmem \
    | egrep -v "  0.[0-9]  0.[0-9] " \
    | egrep -v "auditbeat|metricbeat|vscode|gnome-shell|desktop|firefox|slideshow|prometheus|systemd|glances" \
    | egrep -v " [0-9]  0.[0-9]" \
    | egrep -v "rsync|polkitd|sftp-server|notty|screensaver|mmfsd|atom"
}

Send email(s)

• Set reply-to email to be support@listserv.uab.edu:

  • Outlook:
  • Pop the email out into its own window.
  • Under "Options" ribbon, click "Direct Replies To".
  • Under "Delivery Options" add support@listserv.uab.edu to the "Have Replies Sent To" text box.
  • Click "Close". The "Direct Replies To" button in the ribbon should now stay highlighted.

• Suggested subject:

  Cheaha: Please run processes on compute nodes, not login node

• Suggested body:

  Hi there!

  As part of investigating a recent outage of service, we noticed that you have what appear to be research software running on the login node.

  Please run your research software, workflows, and other long-running or resource-intensive processes on compute nodes in Slurm job contexts.

  If you are new to Cheaha or to Research Computing, I highly recommend visting us at our Office Hours (Zoom info here: https://docs.rc.uab.edu/#contact-us) for a brief introduction. In either case, please review the documentation listed below for starting Slurm jobs.

  • How to use Open OnDemand: https://docs.rc.uab.edu/cheaha/open_ondemand/ood_main/
  • Using interactive applications on our web portal: https://docs.rc.uab.edu/cheaha/open_ondemand/ood_interactive/
  • Slurm batch jobs via the terminal: https://docs.rc.uab.edu/cheaha/slurm/submitting_jobs/

  For additional assistance and to reach us directly, please reply to this email or send an email to support@listserv.uab.edu.

  Thank you,

• Put list of recipient emails into BCC line. Allows sending multiple emails quickly without worrying about researchers seeing each other's mistakes (lets them save face).