Traefik Configuration (repository: https://github.com/javaadpatel/Medium_Securing_Traefik_Dashboard)

traefik.yml

apiVersion: v1
kind: ServiceAccount
metadata:
  name: traefik-ingress-controller

---
kind: Deployment
apiVersion: extensions/v1beta1
metadata:
  name: traefik
  labels:
    app: traefik

spec:
  replicas: 1
  selector:
    matchLabels:
      app: traefik
  template:
    metadata:
      labels:
        app: traefik
    spec:
      serviceAccountName: traefik-ingress-controller
      containers:
        - name: traefik
          image: traefik:v2.1
          args:
            - --log.level=DEBUG
            - --api
            - --api.dashboard=true
            - --entrypoints.web.address=:80
            - --entryPoints.websecure.Address=:443
            - --entryPoints.websecure.forwardedHeaders.trustedIPs=<IP ADDRESS>
            - --certificatesResolvers.le.acme.dnsChallenge=true
            - --certificatesResolvers.le.acme.dnsChallenge.provider=cloudflare
            - --certificatesresolvers.le.acme.email=YOUREMAIL@DOMAIN.com
            - --certificatesresolvers.le.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.le.acme.caserver=https://acme-staging-v02.api.letsencrypt.org/directory
            - --providers.kubernetescrd # set kubernetes custom resource defintion as the provider
          ports:
            - name: web
              containerPort: 80
            - name: websecure
              containerPort: 443
            - name: admin
              containerPort: 8080
          env:
            - name: CF_API_EMAIL
              value: YOURCLOUDFLAREEMAIL@DOMAIN.com
            - name: CF_API_KEY
              valueFrom:
                secretKeyRef:
                  name: cloudflare-credentials
                  key: globalApiKey
---
apiVersion: v1
kind: Service
metadata:
  name: traefik
spec:
  type: LoadBalancer
  selector:
    app: traefik
  ports:
    - protocol: TCP
      port: 80
      name: web
      targetPort: 80
    - protocol: TCP
      port: 8080
      name: admin
      targetPort: 8080
    - protocol: TCP
      port: 443
      name: websecure
      targetPort: 443