homelab - Ingress

public

a nginx that routes http requests to the right service. The routes are distinguished by

• subdomain
• path

Externally accessible

The ingress service is defined as Load Balancer. Thereby it is accessible from outside the cluster with an external IP (192.168.8.201). The external IP is resolved from *.homelab.lan/* by the DNS (see homelab - DNS and VPN setup).

Static IP

To ensure, that the the IP stays the same, the service must have a static assignment to a certain node. This is achieved with nodeSelector

nodeSelector: 
  ingress-ready: "true" 
  kubernetes.io/os: linux

To couple it to a the right 192.168.8.201, it is required to label the corresponding node:

kubectl label node forum0 ingress-ready=true

Single entry point

As an ingress service, it is able to route the incoming traffic to the right services. This way it is not required to expose every single service for receiving requests.

Traffic distribution

The ingress has a set of rules that allows it to find the right recipient for the corresponding request. These rules are either defined by the subdomain and and the path of the url.