What is Ingress Is it something that runs as a pod or on a pod

Question

Can someone help me understand this concept?

Answer 1

• An ingress is an object that holds a set of rules for an ingress controller, which is essentially a reverse proxy and is used to (in the case of nginx-ingress for example) render a configuration file. 

• It allows access to your Kubernetes services from outside the Kubernetes cluster. It holds a set of rules.

• An Ingress Controller is a controller. Typically deployed as a Kubernetes Deployment. 

• That deployment runs a reverse proxy, the ingress part, and a reconciler, the controller part. 

• The reconciler configures the reverse proxy according to the rules in the ingress object.

• Ingress controllers watch the k8s API and update their config on changes. 

• The rules help to pass to a controller that is listening for them. You can deploy a bunch of ingress rules, but nothing will happen unless you have a controller that can process them.

• LoadBalancer service ->Ingress controller pods->App service (via ingress)->App pods