aws-self-stop

#!/bin/bash

## Setup Lockfile
LOCKFILE=/tmp/lock.txt
if [ -e ${LOCKFILE} ] && kill -0 `cat ${LOCKFILE}`; then
    echo "already running"
    exit
fi

## Setup Trap
trap "rm -f ${LOCKFILE}; exit" INT TERM EXIT
echo $$ > ${LOCKFILE}

## Collect start time
START_TIME=$(date --date="$(uptime -s)" +"%s")

## Collect current time
NOW=$(date +"%s")

## Get uptime in secs
DIFF=$((NOW - START_TIME))

## Check uptime more than an hour
if (( $DIFF > 3600 ));
then

  if ! last |  grep --silent "still logged in";
  then

    ## Get instance info
    INSTANCE_ID=$(curl --silent http://169.254.169.254/latest/meta-data/instance-id)
    EC2_AVAIL_ZONE=`curl -s http://169.254.169.254/latest/meta-data/placement/availability-zone`
    EC2_REGION="`echo \"$EC2_AVAIL_ZONE\" | sed 's/[a-z]$//'`"

    ## Stop instance
    /usr/local/bin/aws ec2 stop-instances --instance-ids "${INSTANCE_ID}" --region "${EC2_REGION}" 2>&1 | logger

  fi

fi

rm -f ${LOCKFILE}

setup.sh

sudo wget --quiet -O /usr/local/bin/self-stop https://gist.githubusercontent.com/adamar/15ec9db7b07bc529f98ff3f1b3492f6e/raw/528dfee5270bea8f894700b998fc8946de53aaf5/aws-self-stop && sudo chmod +x /usr/local/bin/self-stop && echo "/10 * * * * root /usr/local/bin/self-stop" | sudo tee /etc/cron.d/self-stop && echo '*/10 * * * * root /usr/local/bin/self-stop' | sudo tee /etc/cron.d/self-stop