What exactly is "server_name" in nginx configuration file ?

What exactly is “server_name” in nginx configuration file ?

I’m trying to set up 2 websites with different domain names. I bought 2 domain names and pointed them to my droplet IP. I use Ubuntu droplet and nginx.

It works when I set only 1 website - then both domain names results by opening that website.

But later I tried to create 2 websites and set nginx to serve each website to its domain name. I get one of the two results: both domain names opens first website, or both domain names get ERR_CONNECTION_REFUSED.

I played around with the nginx configuration, looked at some tutorials here, but it doesn’t work for me.

So I want to go from start :-)

What exactly is “server_name” ? And what should it looks like ? Like domain name, folder name, configuration file name ?

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This question was answered by @olavamjelde:

Each server block in your /etc/nginx/sites-enabled/default will have a server_name.

Server name is what it will listen for, together with your port settings. So let’s say you have a domain, you point your A name like: to your droplets IP. This lets the DNS server know where the domain should go (like a street adress).

Then you can set a server block inside the default file, with server name: But you wish to also have this accessible via, that mens you change it like so: server_name;

If you then want to have a subdomain like: and have it work in another directory, you make another server block and you there add server name:

You also have to add the a name in the DNS agian, point to your ip. For maximum flexibility use: a name>floating ip>your server

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