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Shut down a GCP instance after N minutes below 10% cpu
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| #!/bin/bash | |
| # Add to instance metadata with `gcloud compute instances add-metadata \ | |
| # instance-name --metadata-from-file startup-script=idle-shutdown.sh` and reboot | |
| # NOTE: requires `bc`, eg, sudo apt-get install bc | |
| # Modified from https://stackoverflow.com/questions/30556920/how-can-i-automatically-kill-idle-gce-instances-based-on-cpu-usage | |
| threshold=0.05 | |
| count=0 | |
| wait_minutes=30 | |
| while true | |
| do | |
| load=$(uptime | sed -e 's/.*load average: //g' | awk '{ print $1 }') # 1-minute average load | |
| load="${load//,}" # remove trailing comma | |
| res=$(echo $load'<'$threshold | bc -l) | |
| if (( $res )) | |
| then | |
| echo "Idling.." | |
| ((count+=1)) | |
| fi | |
| echo "Idle minutes count = $count" | |
| if (( count>wait_minutes )) | |
| then | |
| echo Shutting down | |
| # wait a little bit more before actually pulling the plug | |
| sleep 3 | |
| sudo poweroff | |
| fi | |
| sleep 60 | |
| done |
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