Experiencing Vultr CDN not working? Learn the real causes, commands, and quick solutions to restore performance and keep your website fast. Our Vultr Live Support Team is always here to help you.
Vultr CDN Not Working? Here’s the Straight Answer
When your website suddenly slows down or media fails to load, it’s often the CDN. Many users face the same issue, Vultr CDN not working, and struggle to find where things go wrong. Instead of generic advice, here’s a direct guide that cuts to the chase.
When Vultr CDN isn’t working as expected, it means the content delivery network is failing to serve cached files efficiently. This leads to slower performance, heavier origin load, and broken site elements, all of which can frustrate users and affect your business.

An Overview
How Vultr CDN Not Working Affects Your Site
Before diving into causes, here’s what happens when the CDN breaks:
- Decreased Performance: Pages take longer to load because the CDN fails to deliver cached assets.
- Extra Load on Origin: Without caching, every request hits your origin server, risking overload.
- Poor User Experience: Missing images or broken pages can push visitors away fast.
Common Causes and Straight Solutions
Let’s go through the main causes and what you can do immediately. Each part here is critical, follow them in order.
1. Misconfigured Origin URL
Cause: An expired SSL can stop secure content delivery.
What to Do:
- Go to Your Vultr Dashboard:
Log in and head to Products → CDN. - Check Your Pull Zone Setup:
Select Pull Zones, then click the one giving trouble. - Verify the Origin URL:
Confirm that it matches your site address, such as https://example.com. Try opening it directly in a browser. - Update If Needed:
Click Edit, correct the URL, and save it.
Command Example:
curl -I https://example.com
This checks if your origin server responds correctly.
2. Access Permissions
Cause: Your origin server might be blocking file access.
What to Do:
- Connect to the Server:
ssh user@your-server-ip
- Move to Your Web Directory:
cd /var/www/html
- Adjust Permissions:
sudo chmod -R 755 .
- Set Correct Ownership:
sudo chown -R www-data:www-data .
This ensures the CDN can read your content without permission errors.
Boost Your CDN Speed Now!

3. DNS Configuration Problems
Cause: Wrong or missing DNS records can block users from reaching the CDN.
What to Do:
- Open Your Domain DNS Panel:
Use Vultr DNS or your registrar’s interface. - Add a CNAME Record:
| Type | Name | Data | TTL |
|---|---|---|---|
| CNAME | cdn.example.com | cdn-example88.vultrcdn.com | 3600 |
Save and Let It Propagate.
Command Example:
dig cdn.example.com CNAME
4. Firewall Blocking Vultr Requests
Cause: Your server’s firewall could be rejecting CDN requests.
What to Do:
- Access Firewall Settings:
This could be UFW or another service. - Allow Vultr IP Ranges:
sudo ufw allow from <vultr-ip-range> to any port 80,443
- Reload Firewall:
sudo ufw reload
5. Expired SSL Certificate
Cause: An expired SSL can stop secure content delivery.
What to Do:
- Check Your SSL Status:
openssl s_client -connect example.com:443
- Renew SSL Certificate:
For Nginx:
sudo certbot renew --nginx
For Apache:
sudo certbot renew --apache
- Restart Web Server:
sudo systemctl restart nginx
(Use apache2 if you’re on Apache.)
6. Caching Trouble
Cause: Corrupted or outdated cache files may block updates.
What to Do:
- Go to Vultr Dashboard → CDN Pull Zone.
- Click “Purge Cache.” Confirm when prompted.
Command Example:
curl -X POST https://cdn.example88.vultrcdn.com/purge-cache --data '{"urls":["https://example.com/path/to/resource"]}'
How to Avoid the Vultr CDN Not Working Issue Again
- Monitor Regularly: Use uptime tools to catch CDN issues early.
- Document Configurations: Keep track of every setting for quick fixes later.
- Test Often: Access files via CDN URLs occasionally.
- Automate SSL Renewal: Certbot can handle renewals automatically.
Conclusion
A working CDN is the backbone of a fast, stable site. The next time you face Vultr CDN not working, go through these steps and your delivery speed will be back in no time.
