Let's Encrypt Ssl Using Webroot Authenticator

tls-sni challenge disabled

Self Signed SSL For Nginx And Chrome Trusted Authority (Ubuntu)
Setup Let's Encrypt SSL For Nginx On Ubuntu

Install certbox, setup nginx, obtain ssl and auto renewal.

Obtain Let's Encrypt SSL Certificate Using Manual DNS Verification
How to Restore a Deleted Let's Encrypt Cert (Nginx Authenticator, Certbot)
Delete Lets Encrypt Certificates (Certbot)
Troubleshoot When Let's Encrypt Renewal Is Not Working
Cloudflare SSL: Things you should know
Update Certbot On Ubuntu

Upgrade Certbot 0.19.0 to 0.22

Lets Encrypt Delete Certificate And Config After Staging