acme.sh is a command-line utility that can be used to issue and manage Let’s Encrypt SSL certificates. You can use acme.sh to convert an AWS Route53-managed domain to a Cloudflare-managed domain and complete the Let’s Encrypt DNS challenge. Here’s an example of how to do this:
- Install acme.sh: To get started, you will need to install acme.sh on your system. You can do this by running the following command:
curl https://get.acme.sh | sh
- Export your AWS credentials: Before you can use acme.sh to update your Route53 DNS records, you will need to export your AWS credentials. You can do this by running the command:
export AWS_ACCESS_KEY_ID="your_access_key"
export AWS_SECRET_ACCESS_KEY="your_secret_key"
- Issue the certificate: Once you have acme.sh installed and your AWS credentials exported, you can issue the certificate by running the following command:
acme.sh --issue -d example.com --dns dns_aws
- Convert the domain to Cloudflare: After the certificate is issued, you can convert the domain to Cloudflare by creating a new zone in Cloudflare and updating the nameservers in your registrar to point to the Cloudflare nameservers.
- Update the DNS records in Cloudflare: Once the domain is managed by Cloudflare, you can update the DNS records by going to the DNS tab in Cloudflare and adding the TXT records provided by acme.sh
- Renew the certificate: After updating the DNS records, you can renew the certificate with acme.sh using the same command that you used to issue the certificate
Please note that these instructions are for a basic setup and you should adapt them according to your specific requirements. Also, before making any changes, it’s recommended to have a backup plan in case something goes wrong, and also to test the changes before applying them to your production environment.