I had exactly the same symptoms in that the WebUI just redirected back to itself on successful login. I had done the usual triage:
- daily.sh ran perfectly
- validate.php was all green
I checked in /opt/librenms/logs/librenms.log I had this pointer to the issue:
production.ERROR: ErrorException: session_start(): open(/var/lib/php/session/sess_02f1ad1f86608ad8c6b1dad1a9f2510e, O_RDWR) failed: Permission denied (13) in /opt/librenms/app/Http/Controllers/AjaxController.php:17
After running the below command the issue went away:
chown -R nginx:nginx /var/lib/php/session
The baffling thing is that I have an EC2 user-data script that builds my LibreNMS instance (chef on the backlog) that hasnāt changed in weeks but yesterday it stopped working. I checked the commits on librenms github page and nothing that stood out as the culprit but I guess there must have been some creep in dependencies that caused thisā¦
For info, my vitals:
===================================
| Component | Version |
|---|---|
| LibreNMS | 1.41-65-g290e07c |
| DB Schema | 256 |
| PHP | 7.2.7 |
| MySQL | 5.5.56-MariaDB |
| RRDTool | 1.4.8 |
| SNMP | NET-SNMP 5.7.2 |
====================================
[OK] Composer Version: 1.6.5
[OK] Dependencies up-to-date.
[OK] Database connection successful
[OK] Database schema correct