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:
/healthzthat returns 200
/that returns 404
/images/custom-error-pages provides an additional service for the purpose of customizing the error pages served via the default backend.