Dynamic Graphs not showing - but can be generated.

[dballinger99]

Hello,
I have a Centos 6.7 box running Cacti 0.8.8.h and RRDTools 1.3.8. I am not getting any graphs to display when I try to view any of the dynamic pages or even in the Graph Management page. I was able to run Graph Debug Mode and it returns OK but not graph shows. I ran the command from an SSH login and directed it to a file. I am able to see the graph when open the file in a browser.

The install was done with puppet and yum. The rrd files are sym linked to a different partition but it is on the same disk (virtual as this is an AWS instance).

I have selinux set to permissive.
I have the RRDTool set to the correct version in the Console | Settings RRDTool Utility Version
I have the Cacti Cron Interval and the cron interval matching at 5 minutes.
I see updates going to the rrd files. (Poller and database appear to be OK)
I (think) I have the followsymlinks correctly setup in the apache config.
I don't see any errors when the page is viewed in a browser (the graph_image.php lines return a 200.

Attached is the image I created (using the cacti user) from the command line and the view of the dynamic page. I am not sure what else to check or debug for this issue.

[micke2k]

Permissions on the rra folder? Nothing in the logs?

Are the rra files being updated every poller run?( check the date of the files in the folder).

[dballinger99]

Here are the permissions in the rra folder (a small sample but they are all the same)

-rw-rw-rw-. 1 cacti cacti 498360 Jun 28 10:15 res07_res_mem_buffers_852.rrd
-rw-rw-rw-. 1 cacti cacti 498360 Jun 28 10:15 res07_res_mem_cache_853.rrd
-rw-rw-rw-. 1 cacti cacti 498360 Jun 28 10:15 res07_res_mem_free_854.rrd
-rw-rw-rw-. 1 cacti cacti 498360 Jun 28 10:15 res07_res_mem_total_855.rrd

The updates are hitting the rrd files. You can see by the timestamp above and the logs look correct:

06/28/2016 10:19:28 AM - POLLER: Poller[0] CACTI2RRD: /usr/bin/rrdtool update /usr/share/cacti/rra/mob05_app_traffic_in_569.rrd --template traffic_out:traffic_in 1467134362:879917270:775080252
06/28/2016 10:19:31 AM - POLLER: Poller[0] CACTI2RRD: /usr/bin/rrdtool update /usr/share/cacti/rra/mob05_app_traffic_in_914.rrd --template traffic_out:traffic_in 1467134362:879917270:775080252
06/28/2016 10:20:21 AM - POLLER: Poller[0] CACTI2RRD: /usr/bin/rrdtool update /usr/share/cacti/rra/mob05_app_traffic_in_569.rrd --template traffic_in:traffic_out 1467134415:775095394:879949615
06/28/2016 10:20:24 AM - POLLER: Poller[0] CACTI2RRD: /usr/bin/rrdtool update /usr/share/cacti/rra/mob05_app_traffic_in_914.rrd --template traffic_in:traffic_out 1467134415:775107530:879973626

Here are some of the AVERAGE results from an rrdtool fetch...

1467134280: 2.4125807438e+02 4.9007841938e+02
1467134340: 2.4961986733e+02 5.1623837479e+02
1467134400: 2.7573769392e+02 5.8338813417e+02
1467134460: 2.6746202830e+02 6.8175825472e+02
1467134520: 2.7309583333e+02 6.0083333333e+02
1467134580: 2.7403879310e+02 5.5739295977e+02
1467134640: 3.4571516170e+02 8.3439355153e+02
1467134700: 2.9489604520e+02 6.9798598870e+02
1467134760: 2.5956666667e+02 6.2681333333e+02
1467134820: -nan -nan

[dballinger99]

So I tried an experiment and setup another instance of the GUI (php) in /var/www/html/cacti2. The graphs are now displaying properly. It is using the same rrd files, same database, same userid, same poller, it just has a different location.

The original location is /usr/share/cacti and the new location is /var/www/html/ cacti2. I updated the config.php file so the url cacti2 would work correctly.

The graphs are now displaying correctly. I am wondering if there is something in the apache configs that would make a difference between the /usr location and the /var location?