We will use acme.sh with Cloudflare DNS API to generate a wildcard SSL Certificate from Let’s Encrypt for our domain. We also will use Cloud Shell free Linux shell virtual machine instance provided by Google Cloud. Note: Make sure that you have already added your domain to Cloudflare. Log in to Google Cloud Console and activate Cloud Shell Install acme.sh bash curl https://get.acme.sh | sh -s [email protected] Setup Cloudflare global API key, but first you need to log in to your Cloudflare account to get your API key.