TL;DR: You can use Traefik 2.0 on MicroK8s by running it as a DaemonSet.
Experimenting with Kubernetes, i found MicroK8s very promising. Build by Canonical, running on Ubuntu, it wants to be a productive single node cluster. MicroK8s comes with Nginx as built in ingress, which makes deploying very easy. But i wanted to use Traefik as ingress controller and did not find any useful Documentation.
I tried to follow the Traefik & CRD & Let’s Encrypt Howto, until i came to the
kubectl port-forward part, which did’t look good.
So i looked into the git repo and found ingress.yaml, describing how nginx ingress is deployed as DaemonSet. So instead of the 03-deployments.yml in the example, i used following
04-deployment.yml and left the whoami deployment there.
--- apiVersion: v1 kind: ServiceAccount metadata: namespace: default name: traefik-ingress-controller --- apiVersion: apps/v1 kind: DaemonSet metadata: namespace: default name: traefik labels: app: traefik spec: selector: matchLabels: name: traefik template: metadata: labels: name: traefik spec: terminationGracePeriodSeconds: 60 # hostPort doesn't work with CNI, so we have to use hostNetwork instead # see https://github.com/kubernetes/kubernetes/issues/23920 dnsPolicy: ClusterFirstWithHostNet hostNetwork: true serviceAccountName: traefik-ingress-controller containers: - name: traefik image: traefik:v2.0 args: - --api.insecure - --accesslog - --entrypoints.web.Address=:80 - --entrypoints.websecure.Address=:443 - --providers.kubernetescrd - --certificatesresolvers.default.acme.tlschallenge - --firstname.lastname@example.org - --certificatesresolvers.default.acme.storage=acme.json # Please note that this is the staging Let's Encrypt server. # Once you get things working, you should remove that whole line altogether. - --certificatesresolvers.default.acme.caserver=https://acme-staging-v02.api.letsencrypt.org/directory ports: - name: web containerPort: 80 - name: websecure containerPort: 443 - name: admin containerPort: 8080
Conclusion: it is easy to use Traefik instead of nginx on microk8s, by deploying it as a DaemonSet.