I have 2 different docker-compose YML files in 2 suppurate directories. They are both on the same server and on the same Docker network. My containers with application is in the first YML file and the second YML file has only one Nginx container that proxies requests to the first.
first YML file
version: '3'
services:
chatweb:
image: nginx:latest
restart: always
volumes:
- ./angular_dist:/code
- ./site_prod.conf:/etc/nginx/conf.d/site.conf
networks:
- my-net
chatmongodb:
image: mongo:5.0
restart: always
volumes:
- ./mongodb_data_container:/data/db
- ./mongo-init.js:/docker-entrypoint-initdb.d/mongo-init.js:ro
environment:
- MONGO_INITDB_ROOT_USERNAME=test
- MONGO_INITDB_ROOT_PASSWORD=testpass
- MONGO_INITDB_DATABASE=testdb
networks:
- my-net
chatnode:
build:
dockerfile: chat_node_dev
context: .
command: npm run server
restart: always
volumes:
- ./nodejs:/usr/app/
ports:
- "5004:5001"
depends_on:
- chatmongodb
networks:
- my-net
chatnodesocketio:
build:
dockerfile: chat_node_socketio_dev
context: .
restart: always
volumes:
- ./node_socketio:/usr/app/
- ./nodejs/models:/usr/app/models
- ./nodejs/config:/usr/app/nodejs_config
depends_on:
- chatmongodb
networks:
- my-net
mailhog:
image: mailhog/mailhog
restart: always
logging:
driver: 'none' # disable saving logs
ports:
- 1025:1025 # smtp server
- 8025:8025 # web ui
networks:
my-net:
external: true
The second YML file has Nginx proxy server
version: '3'
services:
nginx:
image: nginx:latest
restart: always
ports:
- "80:80"
volumes:
- ./site_prod.conf:/etc/nginx/conf.d/site.conf
networks:
- my-net
networks:
my-net:
external: true
and here is the nginx site_prod.conf for second YML
server {
index index.html;
server_name myserver.com;
error_log /var/log/nginx/error.log;
access_log /var/log/nginx/access.log;
location /{
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_pass http://chatweb:80;
}
}
server {
server_name socket.myserver.com;
error_log /var/log/nginx/error.log;
access_log /var/log/nginx/access.log;
location / {
proxy_pass http://chatnodesocketio:3000;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_set_header X-NginX-Proxy true;
proxy_redirect off;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection 'upgrade';
proxy_set_header Host $host;
proxy_cache_bypass $http_upgrade;
}
}
server {
server_name api.myserver.com;
error_log /var/log/nginx/error.log;
access_log /var/log/nginx/access.log;
location /{
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_pass http://chatnode:5001;
}
}
Everything works well but when i restart the containers that is in the first YML files i get 502 error in the Nginx proxy that is started by the second YML file.
Here is the error in the logs
2022/07/29 06:32:19 [error] 23#23: *3 connect() failed (111: Connection refused) while connecting to upstream, client: 79.180.48.255, server: api.myserver.com, request: "GET / HTTP/1.1", upstream: "http://172.18.0.5:5001/", host: "api.myserver.com"
Please help me: what do i need to change in my current setup to be able to restart my application that is in the first YML file without restarting the server that proxies that is described in the second YML file.
edited this answer seems to be a correct solution https://serverfault.com/a/916786/363583 this solution solve my problem by disabling caching for nginx upstreams
