Custom Domains & Automated SSL

Rubuz includes an automated SSL engine powered by Let’s Encrypt and zero-downtime ACME certificate renewal.

Step 1: Configure Your DNS Records

In your DNS registrar (Cloudflare, Namecheap, Route 53, GoDaddy, etc.), create an A record pointing to your server’s public IPv4 address:

Type:  A
Name:  @ (or subdomain, e.g. "app")
Value: 198.51.100.25 (Your VPS IP)
TTL:   Auto / 300 seconds

If you also wish to support www, add a CNAME record:

Type:  CNAME
Name:  www
Value: yourdomain.com

Step 2: Add Domain in Rubuz

1. In the Rubuz dashboard, navigate to your application.
2. Under Domains, click Add Custom Domain.
3. Enter your domain name (e.g. example.com).
4. Click Verify DNS & Issue SSL.

Rubuz performs an instant pre-flight DNS check before requesting the certificate, preventing rate-limiting from Let’s Encrypt.

Automated Renewals

All certificates issued via Rubuz renew automatically 30 days before expiration. You do not need to configure cron jobs or restart web servers.