Script result failing to graph

[liviusbr]

I modified the cron to run every 10 minutes:

/10 * * * * php /usr/share/cacti/site/poller.php > /dev/null 2>&1...

Any other hints?

[phalek]

That would still point to duplicate pollers running. Check the cron directory (Centos /etc/cron.d ) for any cacti related stuff.

[liviusbr]

That would still point to duplicate pollers running. Check the cron directory (Centos /etc/cron.d ) for any cacti related stuff.

That's right...

But I did not create that entry...
/etc/cron.d# cat cacti
MAILTO=root
*/5 * * * * www-data php --define suhosin.memory_limit=512M /usr/share/cacti/site/poller.php 2>&1 >/dev/null | if [ -f /usr/bin/ts ] ; then ts ; else tee ; fi >> /var/log/cacti/poller-error.log


Shall I keep the one in /etc/cron.d or the one in /var/spool/cron/crontabs/root ?

[phalek]

I suggest removing the root one as this one probably did come with the install itself

[liviusbr]

I suggest removing the root one as this one probably did come with the install itself

Hi phalek,

Thanks, I removed that one.
Do you have any idea how can I automatically compensate the gaps (by graphs) ?
Meaning, cacti will fill in the gaps in between the graphed measurements.

[phalek]

not sure what you are referring to. Cacti takes the "snapshot" data each 5 minute and adds it to the rrd file. As long as data is being delivered every 5 minutes then you won't see any gaps.

If you did have any up until now, that may have been caused by these duplicate poller runs.

[cigamit]

09/27/2016 03:26:20 PM - CMDPHP: Poller[0] Host[1] DS[15] CMD: /usr/bin/python /usr/share/cacti/site/scripts/AdafruitDHumid.py 2302 4, output: Failed to get reading. Try again!

That is telling you that your script isn't properly getting the measurement (read the notes inside the script). It should probably be rewritten to automatically retry internally until it gets it.

How can I measure the time it takes the poller to run?

It tells you in the log, look for the line that says SYSTEM STATS

I would put the ROOT cron back, and remove that other one. That script you are trying to run requires ROOT access to access the proper pins as we already discovered before.

[phalek]

cigamit is right with the cron. Didn't see that it is running as the www-data user. It needs to be run as root.