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Good guide to setup a Kubernetes cluster with Traefik (self.selfhosted)

submitted 1 year ago by bananess to c/selfhosted

4 comments fedilink hide all child comments

Hi all!

I've a background as Linux sysadmin (not much, couple of years) and I'm facing the challenge to setup a Kubernetes cluster.

One of the requirements is to use Traefik.

I'm finding A LOT of how to online but they are all different from each other.

Do you know a good guide to do such things? The K8s cluster is up and running, Traefik is the problem.

I can get it up, access the dashboard, but that's all. I tried to test it using the example application "whoami" and I can see the app in the dashboard but I can access it only by localhost curl on the node where it runs.

Thanks a lot!

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[–] [email protected] 2 points 1 year ago (1 children)

So, there are a few ways to configure it. But- I'll run down basic steps.

Ensure traefik's service is running as a Loadbalancer, with an exposed IP, OR, expose it as port 443.

Use metalLB for provisioning static IPs to services.

To setup services with treafik- either run them as ingress, with traefik as the default ingress controller, or, you can use the ingressroute CRDs. For example- here is an IngressRoute for plex.

apiVersion: traefik.containo.us/v1alpha1
kind: IngressRoute
metadata:
  name: plex
  namespace: media
spec:
  entryPoints:
    - websecure
  routes:
    - match: Host(`plex.xtremeownage.com`)
      kind: Rule
      services:
        - name: plex
          port: 32400

On your DNS server (Your local network, not K8s), point, plex.yourdomain.com at the IP you provisioned for traefik.

In my network, I pointed *.kube.mydomain.com to the IP of my traefik service/LB.

So, anytime I browser to anything at *.kube.mydomain.com, it automatically sends the request to treaefik. From that point, traefik sends it to the service.

That, should get you started.

[–] myogg 1 points 1 year ago

Definitely a good start. This K3s ansible playbook will provision a cluster for you (with traefik installed).

https://github.com/k3s-io/k3s-ansible

With a few tweaks you can install metallb which will give traefik a static IP, a few DNS entries and you'll be good to go.