#!/bin/sh -

set -e

if [ -r /proc/meminfo ]; then
    mem_available=$(awk '/^MemAvailable:/ {print $2}' /proc/meminfo)
fi
if [ "${mem_available:-0}" -lt 200000 ]; then
  sed -i -e 's/shared_buffers = 128MB/shared_buffers = 64MB/' /etc/postgresql/"$1"/postgresql.conf
fi
