How to use NGINX to forward the request to Docker Microservice - docker

Question

I wanted to use NGINX as a reverse proxy to forward the request to microservices.
Both NGINX and Microservices are hosted on docker container.
Below is my nginx.conf file
worker_processes 1;
events { worker_connections 1024; }
#test
http {
sendfile on;
# upstream docker-nginx {
# server nginx:80;
# }
upstream admin-portal {
# server admin-portal:9006;
server xx.xx.xx.xx:9006;
# server localhost:9006;
}
server {
listen 8080;
location / {
proxy_pass http://admin-portal;
proxy_redirect off;
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-Forwarded-Host $server_name;
}
}
}
Dockerfile
FROM nginx
RUN apt-get update && apt-get install -y \
curl
COPY nginx.conf /etc/nginx/nginx.conf
EXPOSE 8080
docker-compose.yml
version: '3'
services:
nginx:
restart: always
build: ../../conf/
volumes:
- ./mysite.template:/etc/nginx/conf.d/mysite.template
ports:
- "8080:8080"
networks:
- cloud
networks:
cloud:
driver: bridge
I am able to access nginx home page by localhost:8080
admin-portal is a microservice running on 9006 port
But if I do localhost:8080/admin-portal/ I am getting below error
nginx_1 | 2018/07/04 07:08:17 [error] 7#7: *1 "/usr/share/nginx/html/admin-portal/index.html" is not found (2: No such file or directory), client: xx.xx.xx.xx, server: your-domain.com, request: "GET /admin-portal/ HTTP/1.1", host: "xx.xx.xx.xx:8080"
nginx_1 | 2018/07/04 07:08:17 [error] 7#7: *1 open() "/usr/share/nginx/html/404.html" failed (2: No such file or directory), client: xx.xx.xx.xx, server: your-domain.com, request: "GET /admin-portal/ HTTP/1.1", host: "xx.xx.xx.xx:8080"
nginx_1 | xx.xx.xx.xx - - [04/Jul/2018:07:08:17 +0000] "GET /admin-portal/ HTTP/1.1" 404 170 "-" "curl/7.47.0"
admin-portal/
Please suggest what changes I need to do to forward the request to admin-portal using nginx

Answer 1

upstream admin-portal {
server 127.0.0.1:9006;
}
it should be :
upstream admin-portal {
server 172.17.0.1:9006;
}
With 172.17.0.1 is ip address gateway of containers.
Or docker inspect containermicroservice_id then get ip address of that container.
upstream admin-portal {
server ipaddressofmicroservicecontainer:9006;
}
Put ip address of server into
server_name localhost ipaddressofserver www.example.com;
then access http://ipaddressofserver:8080/admin-portal
Comment out this part:
#server {
# listen 8080;
# server_name your-domain.com www.your-domain.com;
# root /usr/share/nginx/html;
# index index.html index.htm;
# error_page 404 /404.html;
# error_page 500 502 503 504 /50x.html;
# location = /50x.html {
# root html;
# }
}