Domains

Up to 100 different domains can currently be connected to a serverlet. Connecting a domain to a serverlet configures the load balancer to route traffic to that serverlet. Every serverlet has an internal domain in the format srvletXXXX-XXXX.futrou.eu, assigned when it’s created. If this domain is enough for your needs, you don’t need to purchase any additional domain to run your serverlet.

Connecting a domain to a serverlet

You can connect any domain to a serverlet. Second- and third-level domains are counted individually. The www. variant is set up automatically at no extra count.

Example:

mojedomena.cz

The www. variant will be connected automatically:

www.mojedomena.cz

Wildcard variants (e.g. *.mojedomena.cz) can’t be used.

Note: Each domain can only be connected to one serverlet at a time. If your domain is already connected to another serverlet, please contact us and we’ll look into it.

Connected domains are shown in Administration under the serverlet’s Domains tab.

Once a domain is connected, certificates are generated for it within a few hours. Their management and automatic renewal is fully handled on our end. Certificates aren’t stored on the serverlet and aren’t available to customers — custom certificates can’t be used. Secure transfer over HTTPS (port 443) is handled by our load balancer, which forwards it to the serverlet’s HTTP port (80).

Configuring DNS records

Connecting a domain to a serverlet on its own isn’t enough for your site to show up on it — you still need to set the appropriate DNS records for the domain. With your current DNS provider, you need to add CNAME, or A/AAAA, records for each connected domain.

CNAME record

Using a CNAME record isn’t a problem for subdomains, and we recommend it. If your current DNS provider supports one of the CNAME flattening techniques, we recommend using CNAME records for the domain’s main record too. In this case, add a CNAME record as an alias to the physical server’s domain, which you can find in Administration under the serverlet’s Overview tab. For example:

www.mojedomena.cz.     IN      CNAME  rumble.futrou.com.

A/AAAA records

If your current DNS provider doesn’t support CNAME flattening, you can’t use a CNAME record as the domain’s main record. In this case, you’ll need to manually set the corresponding A (for IPv4) and AAAA (for IPv6) records to the IP addresses of our physical server. For example:

www.mojedomena.cz.     IN      A      159.69.119.71
www.mojedomena.cz.     IN      AAAA   2a01:4f8:c010:d03::1

You can look up the specific IP addresses with the nslookup command on Windows, or host on Linux, for the physical server’s domain. For example:

Windows:

C:\>nslookup rumble.futrou.com
Server:      one.one.one.one
Address:     1.1.1.1
Non-authoritative answer:
Name:        rumble.futrou.com
Addresses:   2a01:4f8:c010:d03::1
             159.69.119.71

Linux:

$ host rumble.futrou.com
rumble.futrou.com has address 159.69.119.71
rumble.futrou.com has IPv6 address 2a01:4f8:c010:d03::1