some .rrd files do not get updated

[jer00n]

It seems I have a strange problem...
I've installed cacti from source (cacti-0.8.6d.tar.gz) and used the 3 patches I found on the cacti website.

Everything seems to work fine, until I added a script to graph the temperature of my harddisks. When I run from command line "php4 /var/www/cacti/poller.php" all the .rrd files gets updated. But when I wait for my cron to execute te SAME (php4 /var/www/cacti/poller.php) script, as root, it doesn't update the rrd file for the temperature graph.

I already increased the amount of concurrent poller processes from 1 to 10 but that doesn't solve my problem. It's strange that the rrd file only gets updated when I manually force php4 to execute poller.php.

Do you have any idea what might cause this problem?

I'm running debian:
Apache/1.3.33
PHP 4.3.10-15 (cli) (built: May 9 2005 08:54:56)
RRDtool 1.0.49
NET-SNMP version: 5.1.2

[jer00n]

when I change the logging to debugging, I don't even see any logging for that specific rrd... When I execute the command manually from my shell, I do see:
06/06/2005 06:57:13 PM - POLLER: Poller[0] CACTI2RRD: /usr/bin/rrdtool update /var/www/cacti/rra/blacky_hda_75.rrd --template hda:hdc 1118077031:39:39


jeroen

[rony]

Permissions?

Make sure the user running the poller has permissions to read/write the rrd files and the directory they are in.

[jer00n]

i'm running the poller as root, so I guess the permissions are OK (otherwise my other graphs wouldn't be updated?)
The script I use for the temperature has the same permissions as the other scripts for my graphs.

jeroen

[TheWitness]

First off, please be carefull with concurrent processes. If you make them too high, that can also cause problems. Second, please review your poller cache "System Utilities->View Poller Cache". Look for the specific entry for the RRD file in question. If you find it, then you need to redirect the output of the cron job to a file and look for error messages. To understand the source.

TheWitness

[jer00n]

OK, thanks for the efforts...

here is what I got:
poller cache:
Data Source: blacky - HDDtemp
RRD: /var/www/cacti/rra/blacky_hda_75.rrd
Action: 1, Script: /var/www/cacti/scripts/hddtemp.sh

but when I redirect the output for the cron job, I don't see anything that looks like HDDtemp or something like that... There is also nothing to see for blacky_hda_75.rrd
If you want to check the output, I attached it.

I changed the concurrent processes back to value 1 (since I created newer graphs, and they do get updated... It's only 1 rrd that doesn't get updated).
By the way, I already deleted the complete graph etc (data source, template, ...) and recreated that. It only updates when I run manually the poller from a shell.

regards,

jeroen