What is an ingress controller?
An Ingress controller is a lightweight, self-healing load balancer that distributes network traffic from outside the cluster to a network service. Using an Ingress controller is a standard approach for providing and managing ingress traffic to containerized applications. The default ingress controllers on OpenShift use the mature and stable HAProxy under the hood. In OpenShift, when you deploy a cluster, the ingress controller is automatically created and hosted in two worker nodes by default.
How does an ingress operator work?
An Ingress operator acts similarly to almost all cluster operators in OpenShift: protecting the important settings of the operation of a cluster. The operator monitors the ingress pods running in the openshift-ingress namespace and protects the IngressController objects from wrong and non-compatible settings that can lead to problems with the cluster network.
Otherwise, you can create others IngressController objects in...
