Create Kubernetes Nginx Controller with Certbot

install-nginx-certbot-in-k8s.sh

#!/bin/bash

# Based in tutorial >> 
# https://www.digitalocean.com/community/tutorials/how-to-set-up-an-nginx-ingress-with-cert-manager-on-digitalocean-kubernetes-pt

# Retired from site, check for new versions. https://kubernetes.github.io/ingress-nginx/deploy/
kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/controller-v0.35.0/deploy/static/provider/cloud/deploy.yaml

# Retired from site, check for new versions. https://cert-manager.io/docs/installation/kubernetes/
kubectl apply --validate=false -f https://github.com/jetstack/cert-manager/releases/download/v1.0.1/cert-manager.yaml

# Create file based in prod_issuer.yml changing your email and execute this command.
kubeclt apply -f prod_isseer.yaml

prod_issuer.yaml

apiVersion: cert-manager.io/v1alpha2
kind: ClusterIssuer
metadata:
  name: letsencrypt-prod
  namespace: cert-manager
spec:
  acme:
    # The ACME server URL
    server: https://acme-v02.api.letsencrypt.org/directory
    # Email address used for ACME registration
    email: youmail@youdomain.com.br
    # Name of a secret used to store the ACME account private key
    privateKeySecretRef:
      name: letsencrypt-prod
    # Enable the HTTP-01 challenge provider
    solvers:
    - http01:
        ingress:
          class: nginx