Create a CDN Resource

Last update: July 03 2026

A CDN resource is a set of settings that determine how content is delivered from the origin to CDN servers and sent from CDN servers to end users.

You can specify the following as the content origin:

• your own origin using your website's domain or IP address;
• or an S3 bucket.

You can also duplicate an already created resource.

Your own origin

1. Make sure you have topped up your balance with 500 ₽.

2. In the control panel, on the top menu, click Products and select CDN.

3. Select the content delivery optimization type. You can change the optimization type after the CDN resource is created.

   • Static — suitable for delivering small files: images, video and audio files, text formats;
   • or Large files — suitable for delivering large files without quality loss, for example, videos. Files are cached and delivered in parts (slices) using HTTP Range requests. By default, the slice size is 16 MB; you can change the slice size after the CDN resource is created.

4. In the Address field, enter the domain or IP address of your website.

5. Click Create. When creating a CDN resource, a default domain is automatically generated. The files that will be served by the CDN server will be accessible via a link of the type *.selcdn.net. You can keep the default domain or connect a personal domain.

S3

1. Ensure that you have topped up your balance with 500 ₽.

2. If you do not have a bucket in Selectel S3 yet, create a public bucket and upload files to it according to the S3: Quick Start guide.

3. In the control panel, on the top menu, click Products and select CDN.

4. Select the content delivery optimization type. You can change the optimization type after the CDN resource is created.

   • Static — suitable for delivering small files: images, video and audio files, text formats;
   • or Large files — suitable for delivering large files without quality loss, for example, videos. Files are cached and delivered in parts (slices) using HTTP Range requests. By default, the slice size is 16 MB; you can change the slice size after the CDN resource is created.

5. In the Address block, specify the address of the public bucket of the type *.selstorage.ru without the protocol. You can view the bucket address in the control panel: in the top menu, click Products → S3 → select a project → Buckets section → bucket page → Domains tab → Primary domain.

6. Click Create. When creating a CDN resource, a default domain is automatically generated. The files that will be served by the CDN server will be accessible via a link of the type *.selcdn.net. You can keep the default domain or add a personal domain.

7. Open the page of the created resource → Origin tab.

8. In the Hostname block, in the Hostname when requesting the origin field, enter the address of the public bucket you added in step 5.