Software⏱️ 3 min read📅 2026-06-03

How to Fix: nginx error "conflicting server name" ignored

nginx error conflicting server name ignored

Quick Answer: The issue is caused by the presence of both a server block and a root directive. Remove or comment out the root directive to resolve the conflict.

📋 Table of Contents

  1. 🛑 Root Causes of the Error
  2. ✅ Best Solutions to Fix It
  3. 💡 Conclusion

The 'conflicting server name' error in nginx occurs when the server attempts to bind to multiple IP addresses with different server names. This issue affects users who have set up multiple server names in their nginx configuration, leading to a warning message that is ignored by the server.

Ignoring this error can lead to confusion and potential security risks, as it allows the server to continue operating despite the mismatched server name. In this guide, we will explore the root causes of this issue and provide two primary methods for resolving it.

🛑 Root Causes of the Error

  • The primary reason for this error is that nginx is configured to listen on multiple IP addresses with different server names. When a server attempts to bind to both an IPv4 and IPv6 address, or multiple IPv4 addresses, the conflicting server name error occurs.
  • An alternative reason for this issue could be due to the use of the 'default' keyword in the server configuration. If the default server name is not explicitly set, nginx may attempt to bind to all available IP addresses, leading to the conflicting server name error.

✅ Best Solutions to Fix It

Using the 'server_name' directive with specific IP addresses

  1. Step 1: Step 1: Identify the specific IP address that you want to use for your server. In this case, we will use the IPv4 address of your EC2 instance (ec2-xx-xx-xxx-xxx.us-west-1.compute.amazonaws.com).
  2. Step 2: Step 2: Update the 'server_name' directive in your nginx configuration to use only the specific IP address. For example: server_name ec2-xx-xx-xxx-xxx.us-west-1.compute.amazonaws.com;
  3. Step 3: Step 3: Save and restart the nginx service to apply the changes.

Using the 'server' block with a single listen directive

  1. Step 1: Step 1: Update the 'listen' directive in your server configuration to use only one IP address. For example: listen 80;
  2. Step 2: Step 2: Remove any redundant 'listen' directives from other blocks in your configuration.
  3. Step 3: Step 3: Save and restart the nginx service to apply the changes.

💡 Conclusion

By following these steps, you should be able to resolve the conflicting server name error in nginx. Remember to carefully review your configuration files to ensure that all server names are correctly specified.

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