Explain the purpose and principle of operation of the Ingress component in OpenShift.

In OpenShift, the Ingress component is responsible for routing external HTTP/HTTPS traffic to services within the cluster. It allows defining rules by which external requests reach the necessary pods, providing access to applications.

Working principle:

• Ingress contains a set of routing rules that map URL paths or hosts to specific services.
• In OpenShift, Ingress is implemented through a controller that manages the load balancer and the router configuration.
• This allows centralized management of access, SSL termination, redirection, and other aspects of incoming traffic.

For example, you can configure Ingress so that requests to example.com/api are directed to one service, and requests to example.com/web to another, without the need to open multiple individual ports.