| SYSTEM INFORMATION | |
|---|---|
| OS type and version | Ubuntu 24.04.03 |
| Webmin version | 2.520 |
| Virtualmin version | 7.50.0 Professional |
| Webserver version | Apache/2.4.63 |
| Related packages | Fail2Ban v1.0.2 |
After deleting a virtual server in Virtualmin Pro 7.50.0 on Ubuntu 24.04, the system’s Fail2Ban service failed to start.
The issue was traced to an orphaned jail configuration left behind, I configured it via WP Workbench Manager plugin. AnyVirtual Server > Manage Web Apps > Manage WordPress > WP WorkBench > System > Enable brute-force login failure protection > YES
That jail referenced a non-existent log file belonging to the deleted domain, which caused Fail2Ban to abort during startup.
After deleting the jail manually, Fail2Ban starts successfully again.