This is my config:
upstream beta {
server localhost:49213;
}
server {
listen 80;
server_name beta.example.com;
location / {
proxy_pass http://beta;
}
}
server {
listen 80;
server_name "";
return 444;
}
When I open localhost:80 I also see the content of localhost:49213. I find it wrong. Nginx should reject all requests that don't have beta.example.com in Host HTTP header, right? Why it's not happening?
OK, here is the answer. The server with an empty server_name has to be declared as a "default" one. More details here: http://nginx.org/en/docs/http/ngx_http_core_module.html#server_name
Nginx, when Host HTTP header doesn't match any servers, goes into the default one, which is the first, if not specified otherwise. Here is the config that works:
upstream beta {
server localhost:49213;
}
server {
listen 80;
server_name beta.example.com;
location / {
proxy_pass http://beta;
}
}
server {
listen 80 default_server; # pay attention!
server_name "";
return 444;
}