Nginx with Node api

Question

Nginx with Node api

I'm having a problem at a time and can't solve it. The problem is as follows:

I have a server that on it has an api running with PM2 on port 3000. I installed NGINX and am trying to bind the route of my domain + path to perform the requests for api. I would like to use a route that looks like:

www.dominio.com.br/api

But I can't configure NGINX to do this.

I configured NGINX like this:

location / {
   proxy_pass http://localhost:3000;
   proxy_http_version 1.1;
   proxy_set_header Upgrade $http_upgrade;
   proxy_set_header Connection 'upgrade';
   proxy_set_header Host $host;
   proxy_cache_bypass $http_upgrade;
}

E this works, but with the route as follows:

www.dominio.com.br

I tried to put the /api in the location complement, like this:

location /api { OR location /api/ { but it didn't work..

I tried tbm to use upstream and it didn't work! I configured as follows:

upstream teste_api {
   server http://localhost:3000;
}

location /api {
   set $upstream teste_api;
}

And when I ran the command: sudo nginx-t This error is displayed: [emerg] "upstream" directive is not allowed here in /etc/nginx/sites-enabled/default:20

Anyone help me please?

2

ubuntu api nginx servidor

Author: Guilherme Nunes, 2020-05-29

Source

1 answers

score 2 · Accepted Answer

Normally the directive upstream should be allocated in the Block http {} in the Nginx configuration file (nginx.conf) ... something like this:

Nginx.conf

http {
    ##
    # node socket upstream
    ##
    upstream teste_api {
      ip_hash;
      server http://localhost:3000;
    }
}

Already in your configuration file of the host (if it is unique) or its subdomains (virtual hosts) you must define the route within the Block server {} .... similar to the following example:

server {
    ##
    # socket
    ##
    location /api {
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_http_version 1.1;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $host;
        proxy_pass http://teste_api;
    }
}

Note that in the example above I am setting the headers of: upgrade, connection, version, " x-forwarded-for" and host ... you can set, omit numerous headers here but, these are the basic ones.

On the front-end just call normally:

const socket = new WebSocket('ws://www.dominio.com.br/api')

Source :

Http://nginx.org/en/docs/http/ngx_http_upstream_module.html#upstream