Bash load average check and restart

gistfile1.txt

!/bin/bash
function post_to_slack () {
  # format message as a code block ```${msg}```
  SLACK_MESSAGE="\`\`\`$1\`\`\`"
  SLACK_URL=https://hooks.slack.com/services/UPDATE_THE_URL

  case "$2" in
    INFO)
      SLACK_ICON=':slack:'
      ;;
    WARNING)
      SLACK_ICON=':warning:'
      ;;
    ERROR)
      SLACK_ICON=':bangbang:'
      ;;
    *)
      SLACK_ICON=':slack:'
      ;;
  esac

  curl -X POST --data "payload={\"text\": \"${SLACK_ICON} ${SLACK_MESSAGE}\"}" ${SLACK_URL}
  mail -s "$1" [email protected] <<< "
                  $1
                  Thank you."
}
loadavg=`uptime | awk '{print $10+0}'`
# bash doesn't understand floating point
# so convert the number to an interger
thisloadavg=`echo $loadavg|awk -F \. '{print $1}'`
if [ "$thisloadavg" -ge "40" ]; then
  echo "Busy - Load Average $loadavg ($thisloadavg) "
  ps aux > /tmp/psaux.tmp
  post_to_slack "Busy - Load Average $loadavg ($thisloadavg)" "ERROR"
  ~/bin/kill-httpd.sh
  sleep 30
  service httpd restart
  loadavg=`uptime | awk '{print $10+0}'`
  thisloadavg=`echo $loadavg|awk -F \. '{print $1}'`
  post_to_slack "After Restart - Load Average $loadavg ($thisloadavg)" "INFO"
else
 echo "Okay - Load Average $loadavg ($thisloadavg) "
fi