# Traefik v2.11 LTS as the cluster edge: hostNetwork 80/443, global http->https redirect.
# TLS: entrypoint terminates TLS; certificates provisioned by cert-manager
# (Let's Encrypt DNS-01 via Cloudflare) into the Ingress TLS secrets.
# NOTE: --entrypoints.websecure.http.tls=true is REQUIRED — without it TLS
# routers never engage the mux and every HTTPS request 404s.
apiVersion: v1
kind: ServiceAccount
metadata:
  name: traefik
  namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: traefik
rules:
  - apiGroups: [""]
    resources: ["services", "endpoints", "secrets", "namespaces", "nodes"]
    verbs: ["get", "list", "watch"]
  - apiGroups: ["discovery.k8s.io"]
    resources: ["endpointslices"]
    verbs: ["get", "list", "watch"]
  - apiGroups: ["networking.k8s.io"]
    resources: ["ingresses", "ingressclasses"]
    verbs: ["get", "list", "watch"]
  - apiGroups: ["networking.k8s.io"]
    resources: ["ingresses/status"]
    verbs: ["update"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: traefik
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: traefik
subjects:
  - kind: ServiceAccount
    name: traefik
    namespace: kube-system
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: traefik
  namespace: kube-system
  labels:
    app: traefik
spec:
  selector:
    matchLabels:
      app: traefik
  template:
    metadata:
      labels:
        app: traefik
    spec:
      serviceAccountName: traefik
      hostNetwork: true
      dnsPolicy: ClusterFirstWithHostNet
      nodeSelector:
        kubernetes.io/hostname: djg-oracle-sl
      tolerations:
        - key: node-role.kubernetes.io/master
          operator: Exists
          effect: NoSchedule
        - key: node-role.kubernetes.io/control-plane
          operator: Exists
          effect: NoSchedule
      containers:
        - name: traefik
          image: traefik:v2.11.2
          args:
            - --providers.kubernetesingress
            - --providers.kubernetescrd=false
            - --entrypoints.web.address=:80
            - --entrypoints.web.http.redirections.entrypoint.to=websecure
            - --entrypoints.web.http.redirections.entrypoint.scheme=https
            - --entrypoints.websecure.address=:443
            - --entrypoints.websecure.http.tls=true
            - --log.level=WARN
          ports:
            - containerPort: 80
              hostPort: 80
              protocol: TCP
            - containerPort: 443
              hostPort: 443
              protocol: TCP
          resources:
            requests:
              cpu: 50m
              memory: 64Mi
            limits:
              memory: 256Mi
          readinessProbe:
            httpGet:
              path: /
              port: 80
              httpHeaders:
                - name: Host
                  value: bestdadjokes.lol
            initialDelaySeconds: 5
            periodSeconds: 15
          livenessProbe:
            httpGet:
              path: /
              port: 80
              httpHeaders:
                - name: Host
                  value: bestdadjokes.lol
            initialDelaySeconds: 15
            periodSeconds: 30