[rrd-users] Bash script behaves strangely while polling

[Jens Haeuser]

Hi @all,

i wrote a simple bash script (ubuntu 7.10, cacti from repositories 
0.8.6j-1.1ubuntu0.2) that reads out values from mbmon and sensors. 
Depending on the given parameter to the script it only prints out the 
desired value. E.g.:

sh pc_status.sh rpmfan1

prints out:
3214

the script works fine in the console, it also shows me the value when 
calling cmd.php in the console correctly:

03/07/2008 10:25:39 PM - CMDPHP: Poller[0] Host[0] DS[26] CMD: sh 
/usr/share/cacti/site/scripts/pc_status.sh rpmfan1, output: 3214

In the cacti log sometimes the values show up (most of the time at the 
beginning of the poll), it also graphs 2 or three values and later on I 
always get output U all the time:

03/07/2008 10:15:14 PM - CMDPHP: Poller[0] Host[0] DS[26] CMD: sh 
/usr/share/cacti/site/scripts/pc_status.sh rpmfan1, output: U

and it stops graphing... :(

here is the script, what did I do wrong? Has someone a hint?


##########################################################################
#!/bin/sh
# Version 0.1 JH8035A: PC status values for cacti
##########################################################################

# fan1
# casefan1
casefan1="fan2"

# fan2
# casefan2
casefan2="fan3"

# cpu fan
cpufan="fan1"

# HDDs
hdd1="/dev/sda"
hdd2="/dev/sdb"
##########################################################################

         # read out values
         mb_temp=`sudo mbmon -T 7 -i -c1`

         #read out temps and assign value to variable
         cpu1_temp=`echo $mb_temp | awk '{print $2}'`
         cpu2_temp=`echo $mb_temp | awk '{print $3}'`
         hdd1_temp=`sudo hddtemp -n $hdd1`
         hdd2_temp=`sudo hddtemp -n $hdd2`


         # read out rpms
         rpmfan1=`sudo sensors | grep $casefan1 | awk '{print $2}'`
         rpmfan2=`sudo sensors | grep $casefan2 | awk '{print $2}'`
         rpmcpufan=`sudo sensors | grep $cpufan | awk '{print $2}'`


	# print out values depending on given parameter to the script

case "$1" in
         rpmfan1)

                 printf $rpmfan1
         ;;
         rpmfan2)
                 printf $rpmfan2
         ;;

         rpmcpufan)
                 printf $rpmcpufan
         ;;

         cpu1_temp)
                 printf $cpu1_temp
         ;;

         cpu2_temp)
                 printf $cpu2_temp
         ;;

         hdd1_temp)
                 printf $hdd1_temp

         ;;

         hdd2_temp)
                 printf $hdd2_temp
         ;;

esac