Unable to setup reverse proxy through nginx

What happened?

Hello, I am trying to setup reverse proxy using nginx through docker-compose and getting this error:

nginx         | 2022/06/17 06:06:06 [error] 24#24: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 192.168.0.1, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:9090/", host: "localhost"

Here is the docker-compose file:

version: '3'

services:
  nginx:
    image: nginx:latest
    container_name: nginx
    volumes:
    - ./nginx.conf:/etc/nginx/nginx.conf
    ports:
    - 80:80

  reposilite:
    image: dzikoysk/reposilite:3.0.0-alpha.15
    container_name: local-repo
    environment:
    - REPOSILITE_OPTS=--token=admin:admin --port=9090
    ports:
    - 9090:9090
    restart: always

And nginx configuration:

user www-data;
worker_processes auto;
pid /run/nginx.pid;
include /etc/nginx/modules-enabled/*.conf;

events {
   worker_connections 1024;
}

http {
   server {
      listen 80;
      server_name localhost 127.0.0.1;

      location / {
         proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP  $remote_addr;
         proxy_pass              http://localhost:9090/;
      }
   }
}

With above setup, direct link http://localhost:9090/ loads reposilite homepage as expected. However, does not work with http://localhost/.

P.S.: Thanks for this wonderful app. It perfectly suits my requirement.

Reposilite version

3.x

Relevant log output

nginx         | /docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration
nginx         | /docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/
nginx         | /docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh
nginx         | 10-listen-on-ipv6-by-default.sh: info: Getting the checksum of /etc/nginx/conf.d/default.conf
nginx         | 10-listen-on-ipv6-by-default.sh: info: Enabled listen on IPv6 in /etc/nginx/conf.d/default.conf
nginx         | /docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh
nginx         | /docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh
nginx         | /docker-entrypoint.sh: Configuration complete; ready for start up
local-repo    | 06:11:14.689 INFO | 
local-repo    | 06:11:14.692 INFO | Reposilite 3.0.0-alpha.15
local-repo    | 06:11:14.693 INFO | 
local-repo    | 06:11:14.693 INFO | --- Environment
local-repo    | 06:11:14.693 INFO | Platform: 16.0.2 (Linux)
local-repo    | 06:11:14.693 INFO | Working directory: /app/data
local-repo    | 06:11:14.694 INFO | Threads: 32 WEB / 16 IO
local-repo    | 06:11:14.780 INFO | 
local-repo    | 06:11:14.780 INFO | --- Loading plugins (10):
local-repo    | 06:11:14.783 INFO | failure, settings, access-token, authentication, console, statistics, frontend, maven, badge, status
local-repo    | 06:11:15.060 INFO | 
local-repo    | 06:11:15.061 INFO | --- Settings
local-repo    | 06:11:15.062 INFO | Loading shared configuration from database
local-repo    | 06:11:15.679 INFO | 
local-repo    | 06:11:15.679 INFO | --- Repositories
local-repo    | 06:11:15.679 INFO | + releases (public)
local-repo    | 06:11:15.680 INFO | + snapshots (public)
local-repo    | 06:11:15.680 INFO | + private (private)
local-repo    | 06:11:15.680 INFO | 3 repositories have been found
local-repo    | 06:11:15.734 INFO | 
local-repo    | 06:11:15.736 WARN | Interactive CLI is not available in current environment.
local-repo    | 06:11:15.737 WARN | Solution for Docker users: https://docs.docker.com/engine/reference/run/#foreground
local-repo    | 06:11:15.735 INFO | Binding server at 0.0.0.0::9090
local-repo    | 06:11:16.052 INFO | Done (0.37s)!
local-repo    | 06:11:16.052 INFO | 
local-repo    | 06:11:16.061 INFO | Reposilite 3.0.0-alpha.15 Commands:
local-repo    | 06:11:16.061 INFO |   failures - Display all recorded exceptions
local-repo    | 06:11:16.061 INFO |   help [<command>] - List of available commands
local-repo    | 06:11:16.062 INFO |   level <level> - Change current level of visible logging
local-repo    | 06:11:16.063 INFO |   route-add <access_token> <path> <permissions> - Add new route to access token
local-repo    | 06:11:16.069 INFO |   route-remove <to> <path> - Remove route from access token
local-repo    | 06:11:16.069 INFO |   stats [<repository>] [<filter>] - Display collected metrics
local-repo    | 06:11:16.069 INFO |   status - Display summary status of app health
local-repo    | 06:11:16.070 INFO |   stop - Shutdown server
local-repo    | 06:11:16.070 INFO |   token-generate [--secret=<value>] <name> [<permissions>] - Generate a new access token
local-repo    | 06:11:16.070 INFO |   token-modify <name> <permissions> - Change token permissions
local-repo    | 06:11:16.070 INFO |   token-rename <name> <new name> - Change token name
local-repo    | 06:11:16.070 INFO |   token-revoke <name> - Revoke token
local-repo    | 06:11:16.071 INFO |   tokens - List all generated tokens
local-repo    | 06:11:16.072 INFO | 
local-repo    | 06:11:16.073 INFO | Collecting status metrics...
local-repo    | 06:11:16.074 INFO | 
local-repo    | 06:11:17.015 INFO | Reposilite 3.0.0-alpha.15 Status
local-repo    | 06:11:17.016 INFO |   Active: true
local-repo    | 06:11:17.017 INFO |   Uptime: 0.01min
local-repo    | 06:11:17.017 INFO |   Memory usage of process: 27.29M
local-repo    | 06:11:17.017 INFO |   Active threads in group: 8
local-repo    | 06:11:17.017 INFO |   Recorded failures: 0
local-repo    | 06:11:17.017 INFO |   Latest version of Reposilite: 3.0.0-rc.1
local-repo    | 06:11:17.017 INFO | 
nginx         | 2022/06/17 06:11:19 [error] 31#31: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 192.168.16.1, server: localhost, request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:9090/", host: "localhost"
nginx         | 2022/06/17 06:11:19 [error] 31#31: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 192.168.16.1, server: localhost, request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:9090/", host: "localhost"
nginx         | 192.168.16.1 - - [17/Jun/2022:06:11:19 +0000] "GET / HTTP/1.1" 502 157 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:101.0) Gecko/20100101 Firefox/101.0"

[niklaswimmer]

You need to change the http://localhost:9090/ in your nginx.conf to http://reposilite:9090.

When you export a port it only is exported to your host system, not to other services. Docker provides an internal DNS server which can resolve the service names to the ip address of the container, which should be used when you have to access another service.

Btw, have a look at the recommended compose configuration for Reposilite, it seems like you have no volume for the artifacts defined which would cause them to vanish if you remove the container.

[anibmurthy]

Thanks much @dzikoysk! Links you shared fixed all the issues I had.