CODEWITHSUNDEEP
node.jsnginx
mabc224
mabc224

Reputation: 742

node.js app with nginx 502 bad gateway error

i am configuring my node.js app with nginx. It is working fine for http but it is not working for https. When i try to access secure domain. i get this error. 

502 Bad Gateway
nginx/1.4.6 (Ubuntu)

Here is my nginx conf file

    upstream node_app_dev {
        server 127.0.0.1:3000;
    }

    upstream node_app_production {
        server 127.0.0.1:3000;
    }

server {
    listen 80;
    server_name mydomain.com;
    access_log /var/log/nginx/dev.log;
    error_log /var/log/nginx/dev.error.log debug;

    location / {
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarder-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $http_host;
        proxy_pass http://node_app_dev;
        proxy_redirect off;
    }
}


server {
    listen 443 ssl;
    server_name mydomain.com;
    access_log /var/log/nginx/secure.log;
    error_log /var/log/nginx/secure.error.log debug;    

    ssl on;
    ssl_certificate certs/mycert.crt;
    ssl_certificate_key certs/mykey.key;

    location / {
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarder-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $host;        
        proxy_pass https://node_app_production;
        proxy_redirect off;

    }    
}

Upvotes: 15

Views: 33497

Answers (2)

Denis Wang
Denis Wang

Reputation: 21

I've resolved the issue with 2 steps.

  1. Check /var/log/nginx/error.log
connect() failed (111: Connection refused) while connecting to upstream, client: *.*.*.*, server: *.*.*.*, request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8000/", host: "*.*.*.*"

       Upstream was still 127.0.0.1:8000 even if I set upstream to 127.0.0.1:3000 in nginx conf file.

  1. Replace server 127.0.0.1:8000 with server 127.0.0.1:3000 in /etc/nginx/conf.d/virtual.conf and restart nginx.
server {
    listen       80;
    server_name  SERVER_IP_ADDRESS;

    location / {
        proxy_pass http://127.0.0.1:3000;
    }
}

sudo /etc/init.d/nginx restart

Finally, it works with no 502 error.

Upvotes: 1

jpaljasma
jpaljasma

Reputation: 1612

Replace 

proxy_pass https://node_app_production;

with 

proxy_pass http://node_app_production;

Restart the nginx and you should be all set. See nginx proxy pass Node, SSL?

Upvotes: 18

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