Docker: nginx reverse proxy and how to configure multiple services (i.e on 8080 &8081)

Question

I am a bit stuck with configuring multiple services where nginx is the proxy server.

running :

docker -v                      
Docker version 19.03.8, build afacb8b7f0

docker-compose -v                              
docker-compose version 1.23.2, build 1110ad01

I want to start with this test, everything in the same docker-compose.yml-file : link to jwilder/nginx

proxy : nginx-server (jwilder/nginx-proxy:0.7.0 , which is nginx 1.17.6)
container1 : httpd:2.4
container2 : httpd:2.4

updating my /etc/hosts before I start

127.0.0.1 container1.com
127.0.0.1 container2.com

Here is my docker-compose.yml-file (obs -> version 3.7)

version: '3.7'

services:

  proxy:
    image: jwilder/nginx-proxy:0.7.0
    container_name: proxy-test
    ports:
      - "80:80"
      - "443:443"
    volumes:
      - /var/run/docker.sock:/tmp/docker.sock:ro
      - ./nginx-proxy.conf:/etc/nginx/conf.d/nginx-proxy.conf:ro

  container1:
    image: httpd:2.4
    container_name: container-1
    environment:
      - VIRTUAL_HOST:container1.com
    ports:
      - 8080:80

  container2:
    image: httpd:2.4
    container_name: container-2
    environment:
      - VIRTUAL_HOST:container2.com
    ports:
      - 8081:80

here is my nginx-proxy.conf:

server {
    listen          80;
    server_name     container1.com;
    location / {
        proxy_pass http://localhost:8080;
    }
}

server {
  listen        80;
  server_name   container2.com;

  location / {
    proxy_pass  http://localhost:8081;
  }
}

After this I run the

docker exec container-1 sed -i 's/It works!/Container 1/' /usr/local/apache2/htdocs/index.html AND

docker exec container-2 sed -i 's/It works!/Container 2/' /usr/local/apache2/htdocs/index.html

Test 1 : with curl to the port 8080 and port 8081

curl localhost:8080
response -> Container 1

curl localhost:8081 
response -> Container 2

Test 2 : with curl to container1.com AND container2.com

curl container1.com
status 502
curl container2.com
status 502

Are the settings in my conf wrong ?

Troubleshooting 1:

docker exec -it proxy-test bash
I can see that the nginx-proxy.conf is in the directory (/etc/nginx/conf.d)
/etc/nginx/conf.d/default.conf is there as well

Troubleshooting 2: The proxy-log (Connection refused - while connecting to upstream)

proxy-test    | nginx.1    | 2020/04/03 10:52:08 [error] 61#61: *9 connect() failed (111: Connection refused) while connecting to upstream, client: 172.29.0.1, server: container1.com, request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8080/", host: "container1.com"
proxy-test    | nginx.1    | 2020/04/03 10:52:08 [error] 61#61: *9 connect() failed (111: Connection refused) while connecting to upstream, client: 172.29.0.1, server: container1.com, request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8080/", host: "container1.com"

score 0 · Answer 1 · answered Apr 03 '20 at 16:44

Found 2 solutions to this.

(1) the first is to update the nginx-proxy.conf with the name of the containers instead of pointing to http://localhost:8080; and http://localhost:8081; :

new config-file

server {
    listen          80;
    server_name     container1.com;
    location / {
        proxy_pass http://container-1;
    }
}

server {
    listen        80;
    server_name   container2.com;

    location / {
      proxy_pass  http://container-2;
    }
}

(2) Leaving out the nginx-proxy.conf-file , docker-compose.yml will map things correctly.

Docker: nginx reverse proxy and how to configure multiple services (i.e on 8080 &8081)

1 Answers1