Docker nginx proxy to host

Question

Short description:

Nginx running on docker, how to configure nginx so that it forwards calls to host.

Long description:

We have one web application which communicates to couple of backends (lets says rest1, rest2 and rest3). We are responsible for rest1.

Lets consider that I started rest1 manually on my pc and running on 2345 port. I want nginx (which is running in docker) to redirect all call torest1 to my own running instance(note, the instance is running on host, not any container and not in docker). And for rest2 and rest3 to some other docker node or may be some other server (who cares).

What I am looking for is:

1. docker-compose.yml configurations (if needed).
2. nginx configuration.

Thanks in advance.

Answer 1

Configure nginx like the following (make sure you replace IP of Docker Host) and save it as default.conf:

server {     listen       80;     server_name  _;     location / {         proxy_pass http://<IP of Docker Host>;         index  index.html index.htm;     }     error_page   500 502 503 504  /50x.html;     location = /50x.html {         root   /usr/share/nginx/html;     } } 

Now bring up the container:

docker run -d --name nginx -p 80:80 -v /path/to/nginx/config/default.conf:/etc/nginx/conf.d/default.conf nginx