If you use Unifi gear, you know that it can proliferate quite fast. Couple that with cameras, a second network for cameras, and you have a growing need for more Unifi controllers to manage devices. The best approach is to, uhm, unifi controllers into a cloud-based setup – but you can’t always do that. When controllers get isolated on networks, you may find that you’ve lost the administrator password for one. Here’s how you can reset it so long as you have root shell access to the machine running your controller.