Stop default router from serving custom domain routes

Note: This page is only valid for clusters using the Custom Domain Operator (CDO), which are ROSA clusters prior to version 4.14

OSD and ROSA supports custom domain operator to serve application custom domain, which provisions openshift ingress controller and cloud load balancers. However, when a route with custom domain is created, both default router and custom domain router serve routes. This article describes how to use route labels to stop default router from serving custom domain routes.

Prerequisites

• Rosa or OSD Cluster
• Custom Domain Deployed

Problem Demo

Deploy A Custom Domain

Create a sample application and Route

Both default router and custom router serve the routes

End user can access the app from both ingress controllers’ cloud load balancer

Stop the default router from serving custom domain routes

Delete the route

Custom Domain only serve routes with corresponding custom domain label

Exclude default router with corresponding custom domain label

Create route with custom domain label

Only Custom Domain router route the traffic