Renew wildcard SSL certificate from Let's Encrypt with Certbot on DigitalOcean Droplet

renew.sh

#!/bin/bash

# Get SSL cert from Let's Encrypt.
# See https://www.digitalocean.com/community/tutorials/how-to-create-let-s-encrypt-wildcard-certificates-with-certbot.
certbot certonly \
    --server https://acme-v02.api.letsencrypt.org/directory \
    --dns-digitalocean \
    --dns-digitalocean-credentials /path/to/certbot-creds.ini \
    --dns-digitalocean-propagation-seconds 300 \
    -d \*.example.com \
    -d example.com \
    <<< $'2\n' # Renew & replace the cert.