I added a Digital Ocean Spaces and want to enable the cdn feature with an own domain. I added nameservers cdn.domainname.com and pointed them to Digital Ocean. I then enabled the cdn function in Spaces and get asked to add a subdomain. This is where I don’t know what to do. I tried assets.cdn.domainname.com, cdn.domainname.com but somehow the certificate isn’t valid
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Heya, @arnevanhoorn
You don’t need to delegate a whole subdomain via nameservers — you just need a CNAME record pointing your custom subdomain to the Spaces CDN endpoint.
So if you want cdn.domainname.com, add a CNAME record at your DNS provider:
cdn.domainname.com → CNAME → <your-space-name>.fra1.cdn.digitaloceanspaces.com
(swap fra1 for whatever region your Space is in)
Then in the Spaces CDN settings, enter cdn.domainname.com as the custom subdomain. DO should automatically provision a Let’s Encrypt certificate for it once the CNAME resolves correctly.
If the cert isn’t valid or isn’t being issued, double check that the CNAME is actually propagated (dig cdn.domainname.com CNAME or use a tool like dnschecker.org). The cert provisioning won’t work if DO can’t verify the domain points to them.
Also make sure you’re not trying to use the root domain or a domain that already has an A record — CNAMEs can’t coexist with other record types on the same name.
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