00-ns.yml

apiVersion: v1
kind: Namespace
metadata:
  name: kube-lego

01-configmap.yml

apiVersion: v1
metadata:
  name: kube-lego
  namespace: kube-lego
data:
  # modify this to specify your address
  lego.email: "hello+certs@emblica.fi"
  # configure letsencrypt's production api
  lego.url: "https://acme-v01.api.letsencrypt.org/directory"
kind: ConfigMap

02-dep.yml

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: kube-lego
  namespace: kube-lego
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: kube-lego
    spec:
      serviceAccountName: kube-lego
      containers:
      - name: kube-lego
        image: jetstack/kube-lego:0.1.5
        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

03-rbac.yml

apiVersion: v1
kind: ServiceAccount
metadata:
  name: kube-lego
  namespace: kube-lego
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRole
metadata:
  name: kube-lego
rules:
- apiGroups:
  - ""
  resources:
  - pods
  verbs:
  - get
  - list
- apiGroups:
  - ""
  resources:
  - services
  - endpoints
  verbs:
  - create
  - get
  - delete
  - update
- apiGroups:
  - extensions
  resources:
  - ingresses
  verbs:
  - get
  - update
  - create
  - list
  - patch
  - delete
  - watch
- apiGroups:
  - ""
  resources:
  - endpoints
  - secrets
  verbs:
  - get
  - create
  - update

---


apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
  name: kube-lego
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: kube-lego
subjects:
  - kind: ServiceAccount
    name: kube-lego
    namespace: kube-lego

apply.sh

#!/bin/sh

kubectl apply -f 00-namespace.yml
kubectl apply -f 01-configmap.yml
kubectl apply -f 02-deployment.yml

example.yml

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: app-server
  namespace: production
  annotations:
    kubernetes.io/tls-acme: "true"
    kubernetes.io/ingress.class: "nginx"
    nginx.ingress.kubernetes.io/proxy-body-size: 100m
spec:
  tls:
  - hosts:
    - app.example.com
    secretName: lego-cert-tls
  rules:
  - host: app.example.com
    http:
      paths:
      - path: /
        backend:
          serviceName: app-service
          servicePort: 8088