I have a basic kubernetes cluster with only one node and I want to add a domain to it. But for now I can only use the NodePort to expose the service. Is there a way to expose the service to port 80 without paying for additional LoadBalancer?
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Yes, your option here would be to set you container as privileged and give it access to hostNetwork and use hostPort. I would not recommend this for any production workload as it relies on privileged containers and is advised against in the Kubernetes best practices.
I have provided a working example below:
You should then be able to access this deployment using:
Note that because this is using the actual port of the host only the NODE_IP of a node running this pod will respond, unlike a nodeport service where traffic will be forwarded.
Hope this helps!
You can configure an ingress for the same. However, you will need a domain pointed to your k8s cluster or etchosts entry for cluster ips.