Notes on uRadMonitor local RRD graphs

Based on the script by Pixel_K  http://www.uradmonitor.com/howto-upgrade-uradmonitor-graph-local-statistics/ I have set up local RRD graphs for my uradmonitor on my pfsense firewall.

rrdtool is already installed on the pfsense.
since it does not have curl, I've replaced it with the available fetch

Here are the adapted scripts I use. I put them in a directory /var/urad

Script to test reading current values from the uradmonitor, curr.sh:

#!/bin/sh

URL=http://10.0.0.101/j
rrdpath="/usr/local/bin"

jsondata=$( /usr/bin/fetch -o /dev/stdout $URL 2> /dev/null );

v_cpm=$( echo $jsondata | cut -f 3 -d "," | cut -f 2  -d ":" )
v_temp=$( echo $jsondata | cut -f 4 -d "," | cut -f 2  -d ":" )

echo CPM : $v_cpm
echo Temperature : $v_temp

Get this script running first! Replace the URL of your uRadMonitor. Run with sh curr.sh

Script to set up the RRD Database, setup.sh:

#!/bin/sh

rrdpath="/usr/local/bin"
rrddata="/var/urad/data"
rrdgraph="/var/urad/graph"

mkdir $rrddata
mkdir $rrdgraph

   $rrdpath/rrdtool create $rrddata/uRadMonitor.rrd -s 60 \
            DS:cpm:GAUGE:300:0:U   \
            DS:temp:GAUGE:300:-100:100  \
            RRA:AVERAGE:0.5:1:600  \
            RRA:AVERAGE:0.5:6:700  \
            RRA:AVERAGE:0.5:24:775 \
            RRA:AVERAGE:0.5:288:797 \
            RRA:MAX:0.5:1:600 \
            RRA:MAX:0.5:6:700 \
            RRA:MAX:0.5:24:775 \
            RRA:MAX:0.5:288:797
   echo database $rrddata/uRadMonitor.rrd created.

Run this sript once to set up the RDD database: sh setup.sh

Script to store the current value and update the graphs, update.sh:

#!/bin/sh

URL=http://10.0.0.101/j
rrdpath="/usr/local/bin"
rrddata="/var/urad/data"
rrdgraph="/var/urad/graph"
rrdfmt="--font AXIS:6: --font TITLE:9: --font UNIT:7: --font LEGEND:7: --font-render-mode mono --color ARROW#000000 --color GRID#8C8C8C --color MGRID#000000 -v \"cpm\" --alt-y-mrtg --width 600"

jsondata=$( /usr/bin/fetch -o /dev/stdout $URL 2> /dev/null );

v_cpm=$( echo $jsondata | cut -f 3 -d "," | cut -f 2  -d ":" )
v_temp=$( echo $jsondata | cut -f 4 -d "," | cut -f 2  -d ":" )

echo CPM : $v_cpm
echo Temperature : $v_temp


$rrdpath/rrdtool update $rrddata/uRadMonitor.rrd N:$v_cpm:$v_temp


$rrdpath/rrdtool graph --imgformat PNG $rrdgraph/rad-day.png   --start -86400 --end -600 --title "Radiation daily" $rrdfmt \
        DEF:cpm=$rrddata/uRadMonitor.rrd:cpm:AVERAGE \
                AREA:cpm#00CCCC:"Count Per Minute\g" \
                        GPRINT:cpm:MAX:"  Max \: %5.1lf " \
                        GPRINT:cpm:AVERAGE:" Avg \: %5.1lf " \
                        GPRINT:cpm:LAST:" Last \: %5.1lf \l"

$rrdpath/rrdtool graph --imgformat PNG $rrdgraph/rad-week.png  --start -604800   -z    --title "Radiation weekly" $rrdfmt \
        DEF:cpm=$rrddata/uRadMonitor.rrd:cpm:AVERAGE \
                AREA:cpm#00CCCC:"Count Per Minute\g" \
                        GPRINT:cpm:MAX:"  Max \: %5.1lf " \
                        GPRINT:cpm:AVERAGE:" Avg \: %5.1lf " \
                        GPRINT:cpm:LAST:" Last \: %5.1lf \l"

$rrdpath/rrdtool graph --imgformat PNG $rrdgraph/rad-month.png --start -2592000  -z    --title "Radiation monthly" $rrdfmt \
        DEF:cpm=$rrddata/uRadMonitor.rrd:cpm:AVERAGE \
                AREA:cpm#00CCCC:"Count Per Minute\g" \
                        GPRINT:cpm:MAX:"  Max \: %5.1lf " \
                        GPRINT:cpm:AVERAGE:" Avg \: %5.1lf " \
                        GPRINT:cpm:LAST:" Last \: %5.1lf \l"

$rrdpath/rrdtool graph --imgformat PNG $rrdgraph/rad-year.png  --start -31536000 -z    --title "Radiation yearly" $rrdfmt \
        DEF:cpm=$rrddata/uRadMonitor.rrd:cpm:AVERAGE \
                AREA:cpm#00CCCC:"Count Per Minute\g" \
                        GPRINT:cpm:MAX:"  Max \: %5.1lf " \
                        GPRINT:cpm:AVERAGE:" Avg \: %5.1lf " \
                        GPRINT:cpm:LAST:" Last \: %5.1lf \l"

Again, adjust your URL and paths, if necessary. Run manually using sh update.sh and check that png files in /var/urad/graph are generated and updated.

When everything is working, create a

crontab file to run the update script every minute, uradcontab:

* * * * * /bin/sh /var/urad/update.sh > /dev/null 2> /dev/null


Install the crontab with:
crontab /var/urad/uradcrontab

To publish the images in the internal pfsense web server:

As root, remount the root directory read-write (default read-only):

/etc/rc.conf_mount_rw

Soft-link the image files into the /usr/local/www directory so they become web-acessible (internal network only):

ln -s /var/urad/graph/*.png /usr/local/www

Create a simple html page with the images, e.g. /usr/local/www/rad.html:
<HTML>
<TITLE>
Local Radiation Levels
</TITLE>
<BODY>
<H2>Local Radiation Levels</H2>

<IMG SRC="rad-day.png"/>
</BR>
</BR>
<IMG SRC="rad-week.png"/>
</BR>
</BR>
<IMG SRC="rad-month.png"/>
</BR>
</BR>
<IMG SRC="rad-year.png"/>
</BODY></HTML>

Finally, remount the root directory read-only again:

/etc/rc.conf_mount_ro

Done!

And a word of caution, don't repeat my mistake and save your files somewhere, they may be erased when you install a system update! ;-)