#!/bin/bash

if [ -z "$1" ]; then

   echo "usage: create-rrd.sh <xyz.rrd>"
   exit 1

fi

if  [ -e $1 ]; then
   rm -i $1
fi

rrdtool create $1 \
	--step=60 \
	--start=-1d \
	DS:temperatur:GAUGE:120:U:U \
	RRA:AVERAGE:0.5:1:3600 \
	RRA:AVERAGE:0.5:30:700 \
	RRA:AVERAGE:0.5:120:775 \
	RRA:AVERAGE:0.5:1440:797 \
	RRA:MAX:0.5:1:3600 \
	RRA:MAX:0.5:30:700 \
	RRA:MAX:0.5:120:775 \
	RRA:MAX:0.5:1440:797

# --
# step: 60 sec
# start: -1 day
# heartbeat: 120
#
# 1:3600   Einheit: 1 PDP (60sec),     3600x = 60h = 2,5d
# 30:700   Einheit: 30 PDP (30min),     700x = 350h = 14,58d
# 120:775  Einheit: 120 PDP (120min),   775x = 1550h = 64,58d
# 1440:797 Einheit: 1440 PDP (1440min), 797x = 797d