Installing Lets Encrypt Certificate on Kubernetes (Microk8s Cluster)

install-lets-encrypt-cert-microk8s.md

Install Let's Encrypt SSL Certificate on Kubernetes Cluster (Microk8s)

Install Cert Manager

sudo microk8s kubectl apply -f https://github.com/jetstack/cert-manager/releases/download/v1.15.1/cert-manager.yaml

Create a Cluster Certiticate Issuer

apiVersion: cert-manager.io/v1
kind: ClusterIssuer
metadata:
  name: letsencrypt
spec:
  acme:
    server: https://acme-v02.api.letsencrypt.org/directory
    email: your.email@gmail.com
    privateKeySecretRef:
       name: letsencrypt-key-1
    solvers:
    - http01:
        ingress:
          class: public

Modify your Ingress annotation and tls specification

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: ingress-routes
  annotations:
    cert-manager.io/cluster-issuer: "letsencrypt"
spec:
  tls:
  - hosts:
#change to your domain
    - your.domain.com
    secretName: tls-secret
  rules:
#change to your domain
  - host: your.domain.com
    http:
      paths:
        - path: /
        pathType: Prefix
        backend:
          service:
            name: webserver-svc
            port:
              number: 80

This will redirect http traffic to https. To Disable redirection, and support both mixed http and https add this to the service's annotation

nginx.ingress.kubernetes.io/ssl-redirect: "false"