#!/bin/bash
set -Ceuo pipefail
PATH=/bin:/usr/bin:/usr/local/bin:/sbin:/usr/sbin

cd /var/www/html/rrd

rrd=load.rrd
if ! test -f $rrd
then
  rrdcreate $rrd \
    DS:load:GAUGE:600:U:U \
    RRA:AVERAGE:0.5:1:512 RRA:AVERAGE:0.5:12:512 RRA:AVERAGE:0.5:288:512 \
    DS:xpid:GAUGE:600:U:U \
    RRA:AVERAGE:0.5:1:512 RRA:AVERAGE:0.5:12:512 RRA:AVERAGE:0.5:288:512
fi
set -- $(cat /proc/loadavg)
load=$3
xpid=$(echo $4 | sed -r 's/[0-9]+\///')
rrdupdate $rrd N:${load}:${xpid}
logger -p news.info -t loadrrd load=${load} xpid=${xpid}

rrdtool graph load.png \
  -t load \
  DEF:load=${rrd}:load:AVERAGE \
  DEF:xpid=${rrd}:xpid:AVERAGE \
  'CDEF:cload=load,100,*' \
  LINE1:cload#FF0000 \
  LINE1:xpid#00FF00 \
  > /dev/null

rrdtool graph loadd10.png \
  --end now --start now-864000s \
  -t load \
  DEF:load=${rrd}:load:AVERAGE \
  DEF:xpid=${rrd}:xpid:AVERAGE \
  'CDEF:cload=load,100,*' \
  LINE1:cload#FF0000 \
  LINE1:xpid#00FF00 \
  > /dev/null