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I have a single node k3s "cluster" with few Services on it.

Whenever I want to access to one of them, I'm forced to either do a port-forward or a describe (and get the endpoint, but it changes each time). From what I have read, ingress (with a local nginx ingress controller) suffers from the same issue.

Isn't there a way to reliably (ie. resisting to reload/reboot), plug my host machine DNS resolution on k3s DNS?

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    K3s comes with built-in traefik ingress listening on host's ports 80 and 443. A simple ingress resource should expose your service on this port with configuration of your choosing defined in ingress - see here my tutorial on unrelated matter, but it has a part for Jenkins installation with a sample how I'm exposing Jenkins via Ingress - worklifenotes.com/2022/01/04/…
    – taleodor
    Jan 10 at 2:17
  • I'm using NixOS and these ports aren't exposed (even without firewalls)
    – GlinesMome
    Jan 12 at 16:44
  • Then it's something specific for NixOS and not for K3s per se. I'm not an expert there, if they have any community support I would ask there.
    – taleodor
    Jan 12 at 20:37

1 Answer 1

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Actually, I should have searched more: NodePort is what I want, letting me expose ports on my local machine.

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  • While this may be fine for a local dev environment, in general using NodePorts is very rarely warranted. What may be recommended instead is a proper ingress configuration. Also, core issue in this question seems to be compatibility problem between NixOS and K3s which is not addressed by this answer.
    – taleodor
    Jan 14 at 22:35

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