Kill AWS instances (run daily from cron)

aws_killer.sh

#!/bin/bash
PATH=$PATH:/snap/bin
EC2KILL_PROFILE=${EC2KILL_PROFILE:-workpersonal}
PROFILE=${EC2KILL_PROFILE:+--profile $EC2KILL_PROFILE}

NOKILL=~/ec2nokill

notify-send --urgency=critical --expire-time 5000 --icon=system-restart \
    "EC2" \
     "About to kill EC2 instances, touch ${NOKILL} to prevent this."

#sleep 30

if [ -f ${NOKILL} ] ; then
    notify-send --urgency=low --expire-time 5000 --icon=system-restart \
        "EC2" \
        "Not killing EC2 instances today"
	~/bin/osd "Not killing EC2 today"
	rm ${NOKILL}
	exit 0
fi

echo "Killing ec2 instances..."

regions=$(aws ${PROFILE} ec2 describe-regions | \
            jq -r '.["Regions"] | .[] | .["RegionName"]' | sort -r)
for region in ${regions}; do
  instances="$(aws ${PROFILE} ec2 describe-instances --region "${region}" \
    --filters Name=instance-state-name,Values=pending,running,shutting-down,stopping,stopped | \
    jq -r '.["Reservations"] | .[] | .["Instances"] | .[] | .["InstanceId"]')"
  if [ -n "${instances}" ]; then
    echo "Shutting down instances in ${region}":
    for instance in ${instances}; do
        termination_protection=$(aws ${PROFILE} ec2 --region "${region}" \
                                describe-instance-attribute --instance-id "${instance}" \
                                --attribute disableApiTermination | jq .DisableApiTermination.Value)
        if [ "${termination_protection}" == "true" ]; then
            echo "Termination protection enabled, skipping instance ${instance}"
            continue
        fi
        echo "Terminating ${instance}"
        aws ${PROFILE} ec2 --region "${region}" \
            terminate-instances --instance-ids "${instance}" \
            || /bin/true
    done
  else
    echo "No instances running in ${region}"
  fi
done