passenger_clear_swap.sh

passenger_clear_swap.sh

#!/bin/sh

while true; do
  value=$( cat /proc/swaps | awk '$4 > 0 {print $4}' | sed s/Used// | awk '$1 > 0 {print $1}' )
  if [ ! -z $value ]
  then
    echo clearing swap...
    sudo /etc/init.d/nginx stop
    sudo swapoff -a
    sudo swapon -a
    sudo /etc/init.d/nginx start
    echo done.
  fi
  echo `date -u`
  sleep 2m
done

# e.g on how to run this script
#nohup sudo ./passenger_clear_swap.sh &> /home/evoadmin/swap_clear_output.txt &