Ping script, no graphs!

[bralaap]

Hi,

I made a php script that pings my local computers to see if they are online, the script outputs someting like this:

pc1:1 pc2:0 pc3:1 pc4:0

(where 1 = online, 0 offline)

The problem is that i`m not getting any graphs out of this information.

Rrdtool gets this command:

/usr/local/rrdtool-1.0.45/bin/rrdtool graph - \
--imgformat=PNG \
--start=-86400 \
--title="Thuis161 Status" \
--base=1000 \
--height=200 \
--width=600 \
--alt-autoscale-max \
--lower-limit=0 \
--vertical-label="Online" \
DEF:a="/var/www/html/cacti-0.8.4/rra/thuis161status.rrd":pc1:AVERAGE \
DEF:b="/var/www/html/cacti-0.8.4/rra/thuis161status.rrd":pc2:AVERAGE \
DEF:c="/var/www/html/cacti-0.8.4/rra/thuis161status.rrd":pc3:AVERAGE \
DEF:d="/var/www/html/cacti-0.8.4/rra/thuis161status.rrd":pc4:AVERAGE \
STACK:a#FFF200:"pc1.lan\n" \
STACK:b#FF6044:"pc2.lan\n" \
STACK:c#D2D8F9:"pc3.lan\n" \
STACK:d#008A77:"pc4.lan"

Is there any way to check if the .rrd file has data in it, so i can test if the problem is in the rrd file or somewhere else!

Thanks in advance!

cheers, harris

[bulek]

You can check if the data is inside by using "rrdtool dump" command. Regarding your graph... you can't have all STACK data series. The first one has to be defined as AREA.

- Piotr