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Expose Traefik Web UI with Kubernetes for the host machine under Vagrant

12/7/2018

I try to install Traefik Web UI, but under Vagrant, without Minikube. This is a Multi-Node setup. On the host machine, I tried to reach UI both under localhost:8081 (guest 8080 port exposed to host in Vagrantfile) and https://localhost:6443/api/v1/namespaces/kube-system/services/https:traefik-web-ui:/proxy/ without luck. Can you recommend a working setting? On this last URL, I'm getting this error:

{
  "kind": "Status",
  "apiVersion": "v1",
  "metadata": {

  },
  "status": "Failure",
  "message": "no endpoints available for service \"https:traefik-web-ui:\"",
  "reason": "ServiceUnavailable",
  "code": 503
}

SSHing into the master machine, the Web UI is working:

vagrant@my-project-master:/vagrant$ kubectl get services --namespace=kube-system
NAME                      TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)           AGE
...
traefik-ingress-service   ClusterIP   10.110.210.58    <none>        80/TCP,8080/TCP   4m30s
traefik-web-ui            ClusterIP   10.98.235.112    <none>        80/TCP            4m29s

vagrant@my-project-master:/vagrant$ curl 10.110.210.58:8080/dashboard/
<!doctype html><html class="has-navbar-fixed-top"><head><meta charset="utf-8"><title>Traefik</title><base href="./"><meta name="viewport" content="width=device-width,initial-scale=1"><link rel="icon" type="image/x-icon" href="./assets/images/traefik.icon.png"><link href="styles.e21e21d47be645f690e6.bundle.css" rel="stylesheet"/></head><body><app-root></app-root><script type="text/javascript" src="inline.318b50c57b4eba3d437b.bundle.js"></script><script type="text/javascript" src="polyfills.1457c99db4b6dba06e8d.bundle.js"></script><script type="text/javascript" src="scripts.ef668c5c0d42ec4c5e83.bundle.js"></script><script type="text/javascript" src="main.f341693bf9ed22060b42.bundle.js"></script></body></html>

The current ui.yml:

---
apiVersion: v1
kind: Service
metadata:
  name: traefik-web-ui
  namespace: kube-system
spec:
  selector:
    k8s-app: traefik-ingress-lb
  ports:
  - name: web
    port: 80
    targetPort: 8080
---
apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: traefik-web-ui
  namespace: kube-system
spec:
  rules:
  #- host: traefik-ui.minikube
  - host: traefik-ui.local
    http:
      paths:
      - path: /
        backend:
          serviceName: traefik-web-ui
          servicePort: web

Installed with:

kubectl apply -f https://raw.githubusercontent.com/containous/traefik/master/examples/k8s/traefik-rbac.yaml
kubectl apply -f https://raw.githubusercontent.com/containous/traefik/master/examples/k8s/traefik-ds.yaml
#kubectl apply -f https://raw.githubusercontent.com/containous/traefik/master/examples/k8s/ui.yaml
kubectl apply -f /vagrant/hashicorp/manifests/traefik/ui.yml

How can I reach the Web UI on the host machine, preferably make it available for the host browser with only an installed certificate?

I use the Kubernetes Dashboard similarly, with the certificate installed on the host browser.

-- Lanti

kubernetes

traefik

traefik-ingress

vagrant

1 Answer

12/7/2018

I found the correct URL under the API to reach the UI:

https://localhost:6443/api/v1/namespaces/kube-system/services/http:traefik-ingress-service:8080/proxy/dashboard/

Making these commands obsolute:

kubectl apply -f https://raw.githubusercontent.com/containous/traefik/master/examples/k8s/ui.yaml
# or
kubectl apply -f /vagrant/hashicorp/manifests/traefik/ui.yml

-- Lanti

Source: StackOverflow

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Expose Traefik Web UI with Kubernetes for the host machine under Vagrant

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