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Enabling LetsEncrypt Auto Renew for Local Domain via Digital Ocean

Sunday, 24 Mar 2024 Tags: digital oceangnu/linuxhome serverletsencryptraspberry piubuntu

I have build home server using Raspberry Pi 4 since a few months ago. This home server host several services for my home network, such as DNSCrypt, Home Assistant and RIPE Atlas Client. This server is being monitored by Prometheus and Grafana. Docker containers are managed by Portainer.

Within all of the services that mentioned above, i gave them FQDN using my domain but with local network IPv4. These services also connected via Zerotier, so i can access and utilized them wherever i go.

All of those FQDN, are bind into LetsEncrypt certificates. Those certificates are created manually, one by one using certbot. They quite make hassle tasks to do.

Managing LetsEncrypt Certificate with Digital Ocean Certbot Plugin

Well, i forgot that i registered those FQDNs on my Digital Ocean DNS. They can be managed using certbot Digital Ocean Plugin.

  • Install Digital Ocean Certbot Plugin sudo apt install certbotsudo apt install python3-certbot-dns-digitalocean
  • Create Digital Ocean credential config file touch ~/certbot-creds.inichmod go-rwx ~/certbot-creds.ini
  • Add your Digital Ocean API Key into credential config file
  vi ~/certbot-creds.ini
  dns_digitalocean_token = your_digitalocean_access_token
  • Issue LetsEncrypt Certificates
  sudo certbot certonly --dns-digitalocean --dns-digitalocean-credentials ~/certbot-creds.ini -d
  • Renewing LetsEncrypt Certificates
  sudo certbot renew
  • Certbot also carry its own renewal systemd services.
  sudo systemctl status certbot.timer

  ● certbot.timer - Run certbot twice daily
     Loaded: loaded (/lib/systemd/system/certbot.timer; enabled; vendor preset: enabled)
     Active: active (waiting) since Mon 2024-02-26 19:46:23 WIB; 3 weeks 6 days ago
    Trigger: Mon 2024-03-25 06:55:11 WIB; 10h left
   Triggers: ● certbot.service

  Feb 26 19:46:23 praji-home-server systemd[1]: Started Run certbot twice daily.