[rrd-users] I'cant update my db

juan luis montoya rivadineira juanluis.mr at gmail.com
Mon Sep 11 17:30:59 MEST 2006

Hello list's friends:
I'm working with RRDTool two weeks ago. I'm trying to graphics about the
memory and CPU of two routers CISCO, but I have some problems. Help me

This is the line to create the DB:

rrdtool create prueba0.rrd DS:maxmemory:GAUGE:600:U:U RRA:AVERAGE:0.5:1:10

And the script to update the DB:


d=`snmpget -v2c -OQv -c sofasp .`

a=`perl -e 'print time, "\n" '`

/usr/bin/rrdtool update prueba0.rrd $a:$d >/dev/null

When I run it in the command line (with sh prueba0.sh), it work fine, but
with the crontab, the Data Base is not updated well. I put this line.

*/5     *       *       *       *       /bin/sh
/srv/www/htdocs/pruebas/prueba0.sh >/dev/null 2>&1

Do you now what is the problem with mi script.


Juan Luis

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