How to install traefik on agent nodes?

[HouzuoGuo]

Hey. I've got a cluster of 5 nodes comprising 2 servers and 3 agents. This page explains that traefik is automatically installed for servers alone:
https://docs.k3s.io/networking/networking-services#traefik-ingress-controller

The agents have less memory and cannot join as servers, but I would like them to run traefik just as servers do. Is there a way to do that with k3s?

Thanks!

[brandond]

This page explains that traefik is automatically installed for servers alone

It does not say that anywhere, nor is that true. Traefik runs only a single replica by default, so it will run on whatever node it can first be scheduled to. If you want more replicas, you can use kubectl scale deployment to ask for additional pods to be run.

Note that by default the ServiceLB daemonset allows access to the traefik pod from all nodes, even if there is only a single replica running on a single node. This is also covered in the docs:

The Traefik ingress controller deploys a LoadBalancer Service that uses ports 80 and 443. By default, ServiceLB will expose these ports on all cluster members.