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Example of connecting Selectel CDN to a website
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Example of connecting Selectel CDN to a website

For your information

These are instructions for connecting a CDN to a site via a Selectel provider with content distribution via personal-domain.

  1. Create CDN-resource.
  2. Create a personal domain for the CDN resource.
  3. Add personal domain to CDN-resource.
  4. Replace domain in static-file URLs.
  5. Check CDN-resource.

1. Create a CDN resource⁠

  1. In Control Panel, go to CDN → CDN Resources.
  2. Click Create CDN resource.
  3. Enter the name of the resource. The name has no effect on the resource settings and is only used in the control panel.
  4. Select a Selectel provider.
  5. Specify the content source — the domain of your site from where the CDN will take static files, for example, example.com.
  6. Click Create CDN resource. The CDN provider will create a default domain from which to distribute content. You can view the default domain in control panel under CDN → CDN resources → resource page → General tab

2. Create a personal domain for CDN resource⁠

  1. Open your DNS hosting control panel.

  2. Create a third-level domain, such as cdn.example.com. This domain will be used as a personal CDN domain for content distribution.

  3. Create a CNAME record:

    • record type is CNAME;
    • record name is a subdomain of the form cdn.example.com;
    • value is the default domain in *.selcdn.net format. You can view the domain in control panel under CDN → CDN resources → resource page → General tab. Specify the domain without the protocol.

3. Add a personal domain to the CDN resource⁠

  1. In Control Panel, go to CDN → CDN Resources.
  2. Open the CDN resource page → General tab.
  3. In the Personal Domains block, click Add Domain.
  4. Specify the third-level domain that you created as a personal domain.
  5. Press Connect.

4. Replace domain in URLs of static files⁠

In the URLs of your site's static files, replace the site domain with a personal domain of the form cdn.example.com that added to the CDN resource:

  • if the site is on a CMS — use a plugin for URL replacement. For example, for a WordPress site use the W3 Total Cache plugin;
  • if the site is not on CMS — replace the URL in the site code.

5. Check the CDN resource⁠

  1. Make sure that at least 30 minutes have passed after all the settings — this time is necessary for the CDN resource to fully work.
  2. Open the file on the content source using a link of the form example.com/images/image.png. If the file doesn't load, the problem is on the side of your site.
  3. Open the file through the default domain using a link of the form *.selcdn.net/images/image.png. If the file does not load, check the CDN and Host header settings.
  4. Open the file through your personal domain using a link of the form cdn.example.com/images/image.png. If the object does not load, check that the CNAME record you added when create-personal-domain is correct.