#!/bin/bash

echo checking for run-away process ...

CPU_THRESHOLD=90

TOPPROCESS=$(top -b -n 1 | head -n 8 | tail -n 1)

PID=$(echo $TOPPROCESS | awk '{print $1}')

LOAD=$(echo $TOPPROCESS | awk '{print $9}')

NAME=$(echo $TOPPROCESS | awk '{print $12}')

# only kill social worker and kloud

if [[ "$NAME" != "koding-socialwo" && "$NAME" != "kloud" ]]; then

exit 0

fi

# check if CPU_THRESHOLD is lower than LOAD

if [ 0 -eq "$(echo "${LOAD} < ${CPU_THRESHOLD}" | bc)" ]; then

kill -9 $PID

echo system overloading!

echo Top-most process killed $NAME

PUBLIC_HOSTNAME=$(/opt/aws/bin/ec2-metadata --public-hostname | awk '{print $2}')

SSH_LINK="ssh://ec2-user@$PUBLIC_HOSTNAME"

MESSAGE="I have restarted *$NAME* at <$SSH_LINK|$HOSTNAME> with *PID:$PID* because of extensive *(% $LOAD) CPU* usage."

PAYLOAD="payload={\"channel\": \"#reports\", \"username\": \"assassin\", \"text\": \"$MESSAGE\", \"icon_emoji\": \":ghost:\"}"

curl -X POST --data-urlencode "$PAYLOAD" $SLACK_REPORTS_CHANNEL

else

echo

echo no run-aways.

echo max load $LOAD process $NAME

fi

exit 0