non-timeseries graphing

edzheng · Post by **edzheng** » Sat Jul 16, 2005 6:30 pm

Cacti is a fantastic graphing tool for monitoring I ever see.
But all the sample graphs are time-based (x-axis is time).
Is there a way to create a non-timeseries graph in cacti, e.g.
For last week, what's the overall average CPU utilization by each host (host is the x-axis)?

Post by **TheWitness** » Sat Jul 16, 2005 7:50 pm

No. RRDtool is designed for graphing data by time.

We are looking at some features moving forward that might assist, but they are a way off. Volunteer work you know.

TheWitness

edzheng · Post by **edzheng** » Sat Jul 16, 2005 11:41 pm

Thanks for your response, man, it's really fast, my surprise!
I hope I could contribute to cacti after getting familiar with its arch.
BTW, I'm stocked for a couple of days by the "no rra file under /rra dir after install" issue posted in Linux/Unix Specific section, could somebody help me out? Thanks in advance.

Post by **TheWitness** » Sun Jul 17, 2005 8:53 am

New install? If so, I would suspect a permissions problem. You should set the Logging Level to DEBUG and then run the following from a command line:

"php <path_cacti>/cmd.php"

and

"php poller.php"

Do this as root. If the files are then created, you know what your prolem is.

TheWitness

edzheng · Post by **edzheng** » Sun Jul 17, 2005 3:05 pm

Aha, eventually I got the .rrd files when running it as root ! Just like wait for a baby's birth. I think the problem is I set the cron to run as cactiuser and this user may have some issue though I chmod -R cactiuser rra/ log/.

Thanks you so much for the help.

BTW, what do you mean "set the Logging Level to DEBUG"? Is there an option in cacti configuration interface or some conf files?

edzheng · Post by **edzheng** » Sun Jul 17, 2005 3:07 pm

Sorry for the typos, I mean run chown -R cactiuser rra/ log/

edzheng · Post by **edzheng** » Sun Jul 17, 2005 4:13 pm

Changing the cron job to run as root does not solve the problem.
I found only manually run the following commands in sequence could create and update rrd files under rra/
/www/php/bin/php /www/htdocs/cacti/cmd.php
this command generates a line in cacti.log about the poller statistics.
/www/php/bin/php /www/htdocs/cacti/poller.php
this command brings what cmd.php collected into rrd files.

And at the end, poller.php hangs for 5 minutes and give out message like
POLLER: Poller[0] Maximum runtime of 296 seconds exceeded. Exiting.

Seems I need to debug poller.php, I'm a newbie to php as well, any suggestion on how to debug it is welcome.

Post by **TheWitness** » Sun Jul 17, 2005 4:27 pm

Check Settings->Poller and make sure your selected poller is cmd.php and not cactid.

TheWitness

edzheng · Post by **edzheng** » Sun Jul 17, 2005 5:14 pm

Found the place to set the log level in cacti, run manually again, log says:
07/17/2005 06:03:44 PM - POLLER: Poller[0] DEBUG: About to Spawn a Remote Process [CMD: /usr/bin/php, ARGS: -q /www/htdocs/cacti/cmd.php 0 1]

I notice the php I installed is at /www/php/bin/php instead of /usr/bin/php.
Seems cacti found an original installed php and I didn't correct it at the first login.
Correct the php path and try manually again, no hang or timeout, seems the problem resolved.

Cacti has quite a few dependencies, the user has to be very carefully about the path. I'll remember this lesson for a long time.

Thx a lot, TheWitness, you support me at the point I almost lost my confidence to use Cacti. I'll keep on trying.

Cacti

non-timeseries graphing

non-timeseries graphing

Permission is not the root cause

Problem resolved

Who is online