Nginx Request redirection one container to another - linux

Question

I am running two centos docker container using following compose file-
version: "2"
services:
nginx:
build:
context: ./docker-build
dockerfile: Dockerfile.nginx
restart: always
ports:
- "8080:8080"
command: "/usr/sbin/nginx"
volumes:
- ~/my-dir:/my-dir
data:
build:
context: ./docker-build
dockerfile: Dockerfile.data
restart: always
ports:
- "8081:8081"
command: "/usr/sbin/nginx"
volumes:
- ~/my-dir-1:/my-dir-1
and I have installed the nginx using Dockerfile in both containers to access specific directories.
Trying to redirect request http://host-IP:8080/my-data/ to the data container using nginx.
Below is my Nginx configuration for nginx container
/etc/nginx/conf.d/default.conf
server {
listen 8080;
location / {
root /my-dir/;
index index.html index.htm;
}
}
I am able to access my-dir directory using http://host-IP:8080 URL and my-dir-1 using http://host-IP:8081 URL, how can I configure Nginx to redirect request on data container using http://host-IP:8080/my-data URL

Answer 1

I don't really get the use case of your app and why are you doing this way.
But you can do this with a proxy, untested code look for the docs but something like this.
http {
upstream data_container {
server data:8081;
}
server {
listen 8080;
location / {
root /my-dir/;
index index.html index.htm;
}
location /my-data {
proxy-pass http://data_container$request_uri;
}
}
}

Answer 2

nginx.conf file
http {
server {
listen 80;
location /api {
proxy_pass http://<SERVICE_NAME>:8080/my-api/;
}
location /web {
proxy_pass http://<SERVICE_NAME>:80/my-web-app/;
}
}
}
events { worker_connections 1024; }
NB: Here /my-api and /my-web-app are the application context path . The SERVICE_NAME is the name specified for each service in docker-compose.yml file.
Dockerfile for nginx
FROM nginx
RUN rm /etc/nginx/conf.d/default.conf
COPY nginx.conf /etc/nginx
EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]
Now access urls via
http://localhost/api/
http://localhost/web/

Answer 3

If your looking for WebSocket conf here it is :
server {
server_name _;
location /ws {
proxy_pass http://localhost:8888;
# this is the key to WebSocket
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
}
location / {
proxy_pass http://localhost:8889;
}
}
Happy coding :)