Automagically create Letsencrypt Certificates for Nginx Virtual Hosts

auto-cert

#!/bin/bash

# Name your config Files like this : DOMAIN.conf eg. example.com.conf

IP=$(/sbin/ip -o -4 addr list eth0 | awk '{print $4}' | cut -d/ -f1)
for filename in /etc/nginx/sites-enabled/*.conf; do
   if ! grep -q "Certbot" $filename; then
      CONF=$(echo "$filename" | cut -d'/' -f5)
      DOMAIN=${CONF%.conf*}
      if [[ $(dig +short a "$DOMAIN") == "$IP" ]]; then
        logger -s "Installing SSL Cert for $DOMAIN"
        certbot -n --redirect --agree-tos --nginx -d "$DOMAIN" -d "www.$DOMAIN"
        sed -i "s/443 ssl;/443 ssl http2;/" $filename
      else
       echo "Ignoring $DOMAIN not pointing to $IP"
      fi
   fi
done