Hi guys,
I am new both to LibreNMS and my Linux knowledge are not very vast 
I had my LibreNMS installed by one of my colleagues in a docker and everything worked just fine until I did the upgrade to the newest version.
After the upgrade I had the errors with the database schema but after running the ALTER TABLE commands I did not have the errors anymore.
However, the poller does not work anymore and the graphs are empty :-/
I did stop and restarted the services, restarted the machine but with no result.
Here’s the output from validate:
| Component | Version |
|---|---|
| LibreNMS | 21.3.0 |
| DB Schema | 2021_03_17_160729_service_templates_cleanup (201) |
| PHP | 7.4.15 |
| Python | 3.8.8 |
| MySQL | 10.2.37-MariaDB-1:10.2.37+maria~bionic |
| RRDTool | 1.7.2 |
| SNMP | NET-SNMP 5.9 |
[OK] Installed from the official Docker image; no Composer required
[OK] Database connection successful
[OK] Database schema correct
[WARN] IPv6 is disabled on your server, you will not be able to add IPv6 devices.
[WARN] Log rotation not enabled, could cause disk space issues
[FIX]:
sudo cp /opt/librenms/misc/librenms.logrotate /etc/logrotate.d/librenms
[WARN] Updates are managed through the official Docker image
These being said, I’m in a dead end and I don’t know what else to do to fix it.
Thank you!