If you’ve spent any time building labs in EVE-NG, you know the feeling. You’re in the zone, dragging nodes onto the canvas, linking interfaces, and powering up routers. Suddenly, you hit a wall.
EVE-NG relies on a local MySQL database to store everything: user credentials, lab topologies, node configurations, and permission settings. When the EVE-NG GUI (the web interface) cannot talk to the database backend, it throws this error. Database Error 90003 Eve-ng
Bookmark this guide. If you run EVE-NG long enough, you will see this error again. When you do, just SSH in, restart MySQL, and get back to learning. If you’ve spent any time building labs in
mysql -u root eve_ng_prod Once inside the MySQL prompt ( mysql> ), run the repair command: EVE-NG relies on a local MySQL database to
You try to start a node, save the topology, or even log in, and you’re met with a red pop-up: .