Strange issue with export

[syn]

I've a strange issue with exports. No errors in the logs...

All graphs export fine except a handful. They are all set to export, and their thumbnails export just fine, as well as the HTML file for the graphs created.. but the images aren't being made...

https://i.imgur.com/CebvBnh.png

Furthermore, if using the command provided in the log that it claims it is using, as the web user, rrd tool creates the files fine, manually. Just not when poller_export does it.

[netniV]

Is the poller running as your web server user (normally apache or part of the www-data group)? On most systems it is running as the "cacti" user which is in the cron schedule file (normally at /etc/cron.d/cacti). This is different to the webuser and may not have the same permissions.

[syn]

It was a multitude of issues, ultimately resulting in a bad poller cache.

After giving more ram to PHP/sql and rebuilding the poller cache, all is well. Thank you for your input.