Hello everyone! I have a strange issue and it’s really throwing me for a loop. As of midnight on October 5, my 3 LibreNMS instances have all stopped updating the availability graphs.
Here’s a quick example:
As I said, I have 3 separate Libre instances and each of them show the exact same issue. RRDtool shows that libre is writing NaN into the table, even though the poller is showing that it’s getting the correct data.
Here’s the validate.php
Here’s the salient section of the poller:
As you can see in the poller screenshot, the DB is updating with good data, but the output to RRD is N:U.
All 3 of my NMS server are experiencing the same error and it’s been on every device I’ve checked so far. I saw another thread that someone posted a similar issue, so I checked the librenms.log and there are no errors in it.
Any ideas on where to look next would be greatly appreciated!