ingress-nginx-controller-controller-defaultbackend

• https://kubernetes.github.io/ingress-nginx/user-guide/default-backend/

The default backend is a service which handles all URL paths and hosts the Ingress-NGINX controller doesn't understand (i.e., all the requests that are not mapped with an Ingress).

Basically a default backend exposes two URLs:

/healthz that returns 200
/ that returns 404

See also

• NGINX Ingress Controller: ConfigMap ingress-nginx, UnAvailableLoadBalancer, UpdatedLoadBalancer, ingress-nginx-controller, ingress-nginx-controller-controller-admission, nginx.org/ingress-controller