Software⏱️ 3 min read📅 2026-06-03

How to Fix: What's the cause of the error 'getaddrinfo EAI_AGAIN'?

Node.js error getaddrinfo EAI_AGAIN may be caused by DNS resolution issues, not necessarily related to the DynDns DDOS attack.

Quick Answer: Check your DNS settings and ensure they are up-to-date. If you're using a third-party DNS service, try switching to a default or built-in DNS service.

📋 Table of Contents

  1. 💡 Why You Are Getting This Error
  2. 🛠️ Step-by-Step Verified Fixes
  3. 💡 Conclusion

The 'getaddrinfo EAI_AGAIN' error is an issue with Node.js that occurs when the server is unable to resolve the IP address of a domain name. This error affects servers running Node.js, particularly those using DNS (Domain Name System) for communication. The error message indicates that there was a problem resolving the hostname 'my-store.myshopify.com:443' and suggests that it might be related to a DynDns DDOS attack, which has affected various online services.

This error can be frustrating because it prevents servers from functioning correctly, leading to downtime and potential data loss. However, by following these steps, you should be able to resolve the issue and get your server up and running again.

💡 Why You Are Getting This Error

  • The primary cause of this error is a DNS resolution failure due to a DynDns DDOS attack. During such an attack, the DNS servers are overwhelmed with requests, causing them to become unresponsive or return temporary failures.
  • An alternative reason for this error could be a misconfigured DNS entry or a network issue that prevents the server from resolving the domain name correctly.

🛠️ Step-by-Step Verified Fixes

Updating Node.js and Installing DNS Cache

  1. Step 1: Update Node.js to the latest version using npm or yarn.
  2. Step 2: Install the 'dns-caching' package using npm or yarn, which can help resolve DNS resolution issues by caching frequently accessed domain names.
  3. Step 3: Configure the DNS cache to point to a reliable DNS server or use a DNS proxy service.

Resetting DNS Cache and Checking Network Configuration

  1. Step 1: Reset the DNS cache on your server to clear any temporary issues. You can do this by deleting the 'host' file or using a DNS cache clearing tool.
  2. Step 2: Check your network configuration to ensure that it is correctly set up for DNS resolution. Verify that your server has access to the DNS servers and that the DNS ports are open.

💡 Conclusion

To resolve the 'getaddrinfo EAI_AGAIN' error, try updating Node.js and installing a DNS caching package. If that doesn't work, reset the DNS cache and check your network configuration for any issues. By following these steps, you should be able to get your server up and running again.

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