I encounter the error below when running docker-compose up
nginx_1 | 2018/07/03 06:54:17 [emerg] 1#1: host not found in upstream "admin:1123" in /etc/nginx/nginx.conf:19 nginx_1 | nginx: [emerg] host not found in upstream "admin:1123" in /etc/nginx/nginx.conf:19 nginx_1 exited with code 1 docker-compose.yml
version: "2" volumes: mongostorage: services: app: build: ./app ports: - "3000" links: - mongo - redis volumes: - ./app:/var/www/app - /var/www/app/node_modules adminmongo: build: ./adminMongo ports: - "4455" links: - mongo command: node app.js admin: build: ./admin ports: - "1123" links: - mongo - redis command: node admin_app.js nginx: build: ./nginx ports: - "80:80" - "1123:1123" - "4455:4455" links: - app:app - admin:admin mongo: image: mongo:2.4 environment: - MONGO_DATA_DIR=/data/db volumes: - mongostorage:/data/db ports: - "27017:27017" redis: image: redis volumes: - ./data/redis/db:/data/db ports: - "6379:6379" dockerfile for app
FROM node:9.8 RUN mkdir -p /var/www/app WORKDIR /var/www/app COPY . /var/www/app RUN npm install -g gulp pm2 notify-send RUN npm install CMD ["pm2-docker", "./bin/www"] dockerfile for admin
FROM node:9.8 RUN mkdir -p /var/www/sibkladmin WORKDIR /var/www/sibkladmin COPY . /var/www/sibkladmin RUN npm install -g gulp pm2 bcrypt RUN npm install dockerfile for nginx
FROM nginx:latest EXPOSE 80 EXPOSE 1123 EXPOSE 4455 COPY nginx.conf /etc/nginx/nginx.conf nginx.conf
events { worker_connections 1024; } http{ upstream app.local{ least_conn; server app:3000 weight=10 max_fails=3 fail_timeout=30s; } upstream app.local:4455{ least_conn; server adminmongo:4455 weight=10 max_fails=3 fail_timeout=30s; } upstream app.local:1123{ least_conn; server admin:1123 weight=10 max_fails=3 fail_timeout=30s; } server { listen 80; server_name app.local; location / { proxy_pass http://app.local; 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 { listen 1123; server_name app.local:1123; location / { proxy_pass http://app.local:1123; 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 { listen 4455; server_name app.local:4455; location / { proxy_pass http://sibklapp.local:4455; 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; } } } Updated:
Error received after docker-compose build
npm ERR! path /var/www/admin/node_modules/bcrypt/node_modules/abbrev npm ERR! code ENOENT npm ERR! errno -2 npm ERR! syscall rename npm ERR! enoent ENOENT: no such file or directory, rename '/var/www/admin/node_modules/bcrypt/node_modules/abbrev' -> '/var/www/admin/node_modules/bcrypt/node_modules/.abbrev.DELETE' npm ERR! enoent This is related to npm not being able to find a file. npm ERR! enoent npm ERR! A complete log of this run can be found in: npm ERR! /root/.npm/_logs/2018-07-05T10_03_43_640Z-debug.log ERROR: Service 'admin' failed to build: The command '/bin/sh -c npm install' returned a non-zero code: 254 2 Answers
Answers 1
Can you try:
NGINX dockerfile
Change:
COPY nginx.conf /etc/nginx/nginx.conf
to
COPY nginx.conf /etc/nginx/nginx.conf.d
Remove EXPOSE ports no need to expose ports.
Compose File
Update compose file to:
version: "2" volumes: mongostorage: services: app: build: ./app ports: - "3000:3000" links: - mongo - redis volumes: - ./app:/var/www/app - /var/www/app/node_modules command: node app.js adminmongo: build: ./adminMongo ports: - "4455:4455" links: - mongo volumes: - ./adminMongo:/var/www/adminMongo - /var/www/adminMongo/node_modules command: node app.js admin: build: ./admin ports: - "1123:1123" links: - mongo - redis volumes: - ./admin:/var/www/admin - /var/www/admin/node_modules command: node admin_app.js nginx: build: ./nginx links: - app:app - admin:admin mongo: image: mongo:2.4 environment: - MONGO_DATA_DIR=/data/db volumes: - mongostorage:/data/db ports: - "27017:27017" redis: image: redis volumes: - ./data/redis/db:/data/db ports: - "6379:6379" NOTE I created a simple node hello world app to test, you will need to update the command: to match what you have in package.json
Also Before you start your app run these commands to clean up any old containers/networks:
docker-compose kill docker-compose down docker network prune docker volume prune To start the services Run:
docker-compose build
docker-compose up --force-recreate
Local Test Output
mongo_1 | Wed Jul 4 21:50:35.835 [initandlisten] waiting for connections on port 27017 mongo_1 | Wed Jul 4 21:50:35.835 [websvr] admin web console waiting for connections on port 28017 app_1 | app listening on port 3000! admin_1 | admin app listening on port 1123! adminmongo_1 | AdminMongo app listening on port 4455! redis_1 | 1:M 04 Jul 21:50:26.523 * Running mode=standalone, port=6379. Answers 2
The issue indicates that you didn't install node_modules inside the Dockerfile using npm install or you overwrote those from the host using COPY . /src kind of statement.
Since the module you are using is a native module it needs to be compiled inside the docker image and not just copied from some place else as the same will not be compatible until unless the Host OS version and Image OS version are the same
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