Connecting a Domain to Craft Cloud
Sites hosted on Craft Cloud can serve traffic on any domain you own.
To set up a domain on Cloud, you will need access to its DNS records, which are often managed via your registrar or existing host.
Preview Domains #
Every environment in your Cloud project gets a unique preview domain. Preview domains always end in preview.craft.cloud, and will include your project handle and the first segment of the environment’s UUID. A complete preview domain looks something like this:
project-my-handle-environment-b62dec18.preview.craft.cloud
To find your preview domain, click the globe icon next to any environment in the project navigation menu. If you don't see this icon, it’s likely because it hasn’t been deployed yet!
Changing the handle of a project or environment may take a moment to update in our routing layer. If you have other services that rely on a consistent hostname (say, for the delivery of webhooks), consider temporarily pointing a subdomain at the environment.
Adding a Domain #
In your Cloud project, navigate to Domains, then click New domain.
Provide the root domain you wish to add, and select an environment, if you want to tie it to one right away. You aren’t required to point the new root domain at Cloud, but you must verify ownership of it before Cloud will accept traffic from it (or any subdomain thereof).
Verifying a domain does not automatically start routing traffic to the selected environment!
A www subdomain is not automatically created for you. You must add it explicitly, if you wish to use it in addition to the bare domain.
Verify Ownership #
To verify ownership or control of a domain, you will be asked to add a single TXT record wherever you manage the domain’s DNS. This record will begin with _cf-custom-hostname, and is followed by the domain or hostname you provided. (You may only need to enter a portion of this record when adding it to your DNS provider—many treat records as subdomains of the apex domain, automatically expanding _cf-custom-hostname to _cf-custom-hostname.mydomain.com.)
Certificate Validation #
Cloud will provide a CNAME and two TXT records that together complete a verification handshake with the certificate issuer.
Route Traffic #
Depending on your DNS provider (and the TTL or “time to live” of any existing records), it may take anywhere from a couple of minutes to 24 hours for traffic to be routed to Cloud.
DNS records are cached for different amounts of time by different providers around the globe. You may see changes before or after your client and their customers—especially if you access the Internet from different regions.
Heroku has a great guide that covers some of this technology, in the same context. If you are unfamiliar with DNS, consider starting with the domain name glossary section, or flipping through Cloudflare’s How DNS Works series!
To send traffic from a verified domain to your Cloud project, add the records below. Keep in mind that making changes to your DNS can result in downtime. Read more about how to prepare for going live.
The preferred way of routing traffic to Cloud is via a CNAME record:
| Record Type | Value |
|---|---|
CNAME | edge.craft.cloud |
All DNS providers support CNAME records on subdomains (like www), but some do not accept them at the root or “apex” domain—sometimes called “CNAME flattening.”
If your provider does not support CNAME flattening at the root, you can still connect your domain to Cloud. Instead of the single CNAME record, add the two A records provided in the A Record tab of the Route Traffic step.
You should never need to use A records for subdomains.
The only difference between A and CNAME records is that—in the unlikely event we add or change edge IPs—you may need to make updates to your DNS configuration. We will not make this kind of infrastructure change without providing customers a reasonable timeline and clear instructions for making required updates.
CNAME Flattening
Using CNAME records at the root domain (also sometimes referred to as ALIAS or ANAME records) is supported by these popular DNS providers:
We have not been able to verify CNAME flattening or ANAME support for these services:
- AWS Route53
- Google domains
- GoDaddy
If your provider does not support CNAME flattening, but you would like to take advantage of it, we recommend switching to Cloudflare before launching on Cloud. When setting up a domain with Cloudflare, they copy all your existing records, and give you an opportunity to tweak them before cutting over.
Subdomains #
Each domain can have any number of subdomains. Subdomains can point to the same environment as the primary domain (great for multi-site projects) or a different environment (perfect for a staging environment).
You may also directly add and verify a non-apex domain if your project will never need to serve traffic from the apex—but we only recommend this in limited circumstances.
SSL #
Every domain that sends traffic to Craft Cloud is automatically protected with SSL by Cloudflare. You do not need to manage certificates, redirection, or any other configuration—Cloud takes care of this for you, at the edge.
Cloud also sets the @web alias to ensure all URLs are generated with the secure https:// protocol. The only place we don’t know what @web should be is on the CLI—if you need to generate URLs from a command (or queue job), you may need to define this alias in your application config.
Nameservers #
Craft Cloud does not include domain registration or DNS management tools. You and your clients will still need to arrange the purchase and setup of a domain.
Pricing #
Every Cloud project includes one root domain, and as many subdomains as you need. You can purchase additional root domains at any time. Read more at Cloud pricing.
Troubleshooting #
Tools #
Some ISPs cache DNS lookups more aggressively than others, and can influence when and what records you see from your own internet connection.
- Use DNS Checker from any web browser to verify your changes from multiple locations.
- The unix command line tool
digcan be used to query specific DNS providers. For example, you can use Cloudflare’s own 1.1.1.1 resolver like this:dig @1.1.1.1 craftcms.com
Cloudflare Users #
All traffic enters Craft Cloud’s infrastructure via Cloudflare, which means it (and your projects!) are protected by enterprise-grade security features. However, this can complicate ownership and certificate verification for existing Cloudflare users who have proxying enabled on the domain’s current apex records.