Setting SSL with LetsEncrypt & KONG, refer https://gist.github.com/srtvprateek/417ed0b2e1790389f1fdfe12dcebcccf before this

setup_letsencrypt.sh

#!/bin/sh

### Please refer https://gist.github.com/srtvprateek/417ed0b2e1790389f1fdfe12dcebcccf 
### to setup node and KONG before proceeding

## install GIT
sudo apt update && sudo apt upgrade
sudo apt-get install git

## download LetsEncrypt
sudo git clone https://github.com/letsencrypt/letsencrypt 

## creating SSL certificate
sudo kong stop  # you need to stop KONG server here, so that SSL can be validated
sudo -H ./letsencrypt-auto certonly --standalone --renew-by-default -d EXAMPLE.COM

## setting up KONG ssl
sudo bash -c "echo -e ‘\nssl = on\nssl_cert = /etc/letsencrypt/live/EXAMPLE.COM/fullchain.pem \nssl_cert_key = /etc/letsencrypt/live/EXAMPLE.COM/privkey.pem' >> /etc/kong/kong_custom.conf"
sudo vim /etc/kong/kong.conf

  # copy following code to /etc/kong/kong.conf
  proxy_listen = 0.0.0.0:80, 0.0.0.0:443 ssl

sudo kong start -c /etc/kong/kong_custom.conf # start KONG server

## Adding SSL certificates to KONG
sudo curl -i -X POST http://localhost:8001/certificates \
	-F "cert=@/etc/letsencrypt/live/api.alkile.co/fullchain.pem" \
	-F "key=@/etc/letsencrypt/live/api.alkile.co/privkey.pem" \
	-F "snis=EXAMPLE.COM"
  
### 🎉 You are all set, try https://example.com to verify. 🎉