Auto_Shutdown

a script to Automatically shut-doen (time-out) a VM after inactivity

Version 1

Implemented in Bash script. Very simple

Version 2

Implemented in Python.

• Activity signals taken into account :
  • CPU load
  • UpTime
  • Recently created/modified .ipynb or .py files in /home/
  • Activity of Jupyter kernels
• Logic to cumulate :
  • If activity, increment a counter by a value that depends on the hour of the day (faster incrementation during the night)

Version 3

Implemented in Python.

• Activity signals taken into account :
  • Same as version 2
• All signals are logged into a file (we keep last 10,000 rows)
• Decision logic looks at the last X rows and take a decision

This change allows for :

• Easier Monitoring & Troubleshooting a posteriori (since we can look at all the timeline of signals)
• More complex logics which aggregate signals during the last N minutes
  • Example: "Only consider active if Jupyter kernel were active for the last N consecutive minutes..."

Deployment :

./deploy.sh Add in /etc/crontab : * * * * * root /home/enrices/auto_shutdown/main.sh **PASSOWRD**

Version 4

• Implemented in pure Bash
• Same Exact logic as Version 3
• Now scheduled by a SystemD service, rather than cron

This change allows for :

• Easier Monitoring & Troubleshooting a posteriori (since we can look at all the timeline of signals)
• More complex logics which aggregate signals during the last N minutes
  • Example: "Only consider active if Jupyter kernel were active for the last N consecutive minutes..."

Deployment :

sudo ./deploy.sh **PASSWORD**