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Question

Conflicting server name "mydomain.com" on 0.0.0.0:80, ignored NGINX error log Ubuntu 20.04

Hello, when I check the nginx error log I notice that alert and I don’t know why, I cannot access my website from http or https, my DNS in cloudflare are:

A - mydomain.com - MY IP
CNAME - www - mydomain.com

The 4 last lines of the log:

2020/10/12 07:03:22 [notice] 15705#15705: signal process started
2020/10/12 07:18:50 [warn] 15818#15818: conflicting server name "mydomain.com" on 0.0.0.0:80, ignored
2020/10/12 07:18:50 [warn] 15818#15818: conflicting server name "www.mydomain.com" on 0.0.0.0:80, ignored
2020/10/12 07:54:16 [notice] 16047#16047: signal process started

Any help please?

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6
Bobby Iliev
Site Moderator
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• October 12, 2020
Accepted Answer

Hi there @hcmendez,

It most likely means that you have your mydomain.com domain specified in multiple Nginx server blocks.

What you could do is use the grep command and search for the mydomain.com domain inside your /etc/nginx/sites-enabled folder:

  1. grep -r mydomain.com /etc/nginx/sites-enabled

If you see the domain name in more than server blocks for port 80, you would need to remove the duplicate one and then restart Nginx.

Hope that this helps! Regards, Bobby

Henry Mendez • October 12, 2020

Thanks for the answer, i’m typing the command but nothing happens. I have changed the mydomain.com with my real domain but nothing.

Bobby Iliev
Site Moderator
Site Moderator badge
• October 13, 2020

Hello,

In this case, can you share the content of your Nginx server blocks here?

Regards, Bobby

blissy • November 9, 2020

same is happening to me, what to do when I need to host multiple sites on several created server blocks in /etc/nginx/sites-available/

ps. all my domains in cloudflare

xinge666qwd • September 28, 2021

Buddy,You can create multiple html files like me, one html represents one page

hak33m16 • August 7, 2021

Wow, thanks a ton. I read over this and thought “there’s absolutely no way I’m specifying multiple domains, I’ve been over my files multiple times” but ran it anyways. It looks like certbot for whatever reason decided to overwrite my default site server_name with a new site I’d created in a separate file…? Likely because I was using an older version with bugs

Just so that everybody is aware, you’ll likely have to include a wildcard in the search for it to return results:

grep -r mydomain.com /etc/nginx/sites-enabled/*
Bobby Iliev
Site Moderator
Site Moderator badge
• August 8, 2021

Hi there,

Happy to hear that you’ve got it all working! Thank you for including this additional information here!

sharhanalhassan • August 23, 2021

Hello, I just had the same problem and used the code snippet to find my IP showed red (meaning it’s on server blocks). How do I remove it. There is only one place i kept the IP

Please see my configuration: dir: /etc/nginx/sites-enalbed/clouditech

code

server {  
	listen 80;     
	server_name 137.184.69.187;    
	location = /favicon.ico { access_log off; log_not_found off; }    
	location /static/ {         
		root /root/clouditech_project;     
	}    
	location / {         
		include proxy_params;         
		proxy_pass http://unix:/run/gunicorn.sock;     
	}
}
thiagoemanuel • August 25, 2021

thanks

xinge666qwd • September 28, 2021

That is really useful , help me so much that I sign up a account to say that Thank you very much !

Bobby Iliev
Site Moderator
Site Moderator badge
• October 1, 2021

No problem at all @xinge666qwd! Happy to hear that this helped!

Henry Mendez • November 9, 2020

Thanks for the answers, I deployed another droplet with Open LiteSpeed. Everything is good now, thanks.

dazz • November 24, 2021

In my case I had created another entry in /etc/nginx/conf.d/virtual.conf, from a previous guide.

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