Full Yaml for Kubernetes TLS Ingress with Let's Encrypt Certificates.

01lego.yaml

apiVersion: v1
kind: Namespace
metadata:
  name: kube-lego
---
apiVersion: v1
metadata:
  name: kube-lego
  namespace: kube-lego
data:
  # modify this to specify your address
  lego.email: "email@example.com"
  # configure letencrypt's production api
  lego.url: "https://acme-v01.api.letsencrypt.org/directory"
kind: ConfigMap
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: kube-lego
  namespace: kube-lego
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: kube-lego
    spec:
      containers:
      - name: kube-lego
        image: jetstack/kube-lego:0.1.3
        imagePullPolicy: Always
        ports:
        - containerPort: 8080
        env:
        - name: LEGO_EMAIL
          valueFrom:
            configMapKeyRef:
              name: kube-lego
              key: lego.email
        - name: LEGO_URL
          valueFrom:
            configMapKeyRef:
              name: kube-lego
              key: lego.url
        - name: LEGO_NAMESPACE
          valueFrom:
            fieldRef:
              fieldPath: metadata.namespace
        - name: LEGO_POD_IP
          valueFrom:
            fieldRef:
              fieldPath: status.podIP
        readinessProbe:
          httpGet:
            path: /healthz
            port: 8080
          initialDelaySeconds: 5
          timeoutSeconds: 1

02nginx-ingress.yaml

apiVersion: v1
kind: Namespace
metadata:
  name: nginx-ingress
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: default-http-backend
  namespace: nginx-ingress
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: default-http-backend
    spec:
      containers:
      - name: default-http-backend
        # Any image is permissable as long as:
        # 1. It serves a 404 page at /
        # 2. It serves 200 on a /healthz endpoint
        image: gcr.io/google_containers/defaultbackend:1.0
        livenessProbe:
          httpGet:
            path: /healthz
            port: 8080
            scheme: HTTP
          initialDelaySeconds: 30
          timeoutSeconds: 5
        ports:
        - containerPort: 8080
        resources:
          limits:
            cpu: 10m
            memory: 20Mi
          requests:
            cpu: 10m
            memory: 20Mi
---
apiVersion: v1
kind: Service
metadata:
  name: default-http-backend
  namespace: nginx-ingress
spec:
  ports:
  - port: 80
    targetPort: 8080
    protocol: TCP
  selector:
    app: default-http-backend
---
apiVersion: v1
data:
  proxy-connect-timeout: "15"
  proxy-read-timeout: "600"
  proxy-send-imeout: "600"
  hsts-include-subdomains: "false"
  body-size: "64m"
  server-name-hash-bucket-size: "256"
kind: ConfigMap
metadata:
  namespace: nginx-ingress
  name: nginx
---
apiVersion: v1
kind: Service
metadata:
  name: nginx
  namespace: nginx-ingress
  annotations:
    service.beta.kubernetes.io/aws-load-balancer-connection-idle-timeout: "600"
    service.beta.kubernetes.io/aws-load-balancer-cross-zone-load-balancing-enabled: "true"
spec:
  type: LoadBalancer
  ports:
  - port: 80
    name: http
  - port: 443
    name: https
  selector:
    app: nginx
---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: nginx
  namespace: nginx-ingress
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - image: gcr.io/google_containers/nginx-ingress-controller:0.8.3
        name: nginx
        imagePullPolicy: Always
        env:
          - name: POD_NAME
            valueFrom:
              fieldRef:
                fieldPath: metadata.name
          - name: POD_NAMESPACE
            valueFrom:
              fieldRef:
                fieldPath: metadata.namespace
        livenessProbe:
          httpGet:
            path: /healthz
            port: 10254
            scheme: HTTP
          initialDelaySeconds: 30
          timeoutSeconds: 5
        ports:
        - containerPort: 80
        - containerPort: 443
        args:
        - /nginx-ingress-controller
        - --default-backend-service=nginx-ingress/default-http-backend
        - --nginx-configmap=nginx-ingress/nginx

03site-ingress.yaml

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: INGRESS_NAME
  namespace: INGRESS_NAMESPACE
  annotations:
    kubernetes.io/tls-acme: "true"
    kubernetes.io/ingress.class: "nginx"
spec:
  tls:
  - hosts:
    - INGRESS_DOMAIN_NAME
    secretName: INGRESS_SECRET_NAME
  rules:
  - host: INGRESS_DOMAIN_NAME
    http:
      paths:
      - path: /
        backend:
          serviceName: SERVICE_NAME
          servicePort: SERVICE_PORT