Connection refused : Nginx HTTPS reverse proxy in docker container - nginx

Question

I wanted to setup https reverse proxy with nginx on docker container either ubuntu/centos. On Browser side, I am getting connection refused error. And also, I cannot see anything under /var/log/nginx/access.log or /var/log/nginx/error.log.
I am able to setup http reverse proxy with nginx on docker container again. And, also https reverse proxy with nginx on normal ubuntu and centos virtual machines.
Can understand the reason why https reverse proxy with nginx on docker containers is failing to connect from browser.?
If any additional information needed, I can provide you. Thanks in advance.
For reference, Please check this sites-available/default file.
server {
listen 80;
server_name localhost;
return 301 https://$host$request_uri;
}
server {
listen 443 ssl;
server_name localhost;
ssl_certificate /etc/nginx/ssl/cert.pem;
ssl_certificate_key /etc/nginx/ssl/cert.key;
ssl on;
ssl_session_cache builtin:1000 shared:SSL:10m;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_ciphers HIGH:!aNULL:!eNULL:!EXPORT:!CAMELLIA:!DES:!MD5:!PSK:!RC4;
ssl_prefer_server_ciphers on;
location ~* /rabbitmq/(.*) {
rewrite ^\/rabbitmq\/(.*)$ /$1 break;
proxy_pass http://127.0.0.1:15672;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-NginX-Proxy true;
proxy_redirect http:// https://;
}
location ~* /api/(.*) {
rewrite ^/api/(.*)$ /$1 break;
proxy_pass http://127.0.0.1:3000;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-NginX-Proxy true;
proxy_redirect http:// https://;
}
}
Thanks,
Ganesh

Answer 1

Looks, I need to expose both HTTP and HTTPS ports, since nginx reverse proxy configured to server only HTTPS traffic.
docker run -d -p 80:80 -p 443:443 nginx-container
When I started exposing HTTPS port, then it worked.

Answer 2

You're probably running your container in "bridge" network mode (it's default), which means that your 127.0.0.1 is not what you think it is. It would use virtualised network adapter for your container running nginx. To quickly fix it you can add
--net=host
parameter to your docker run command. There are other options, but I need to know more about your setup and requirements to suggest them.