Question
Question
Docker nginx: [emerg] host not found in upstream “web:3000”
I released my reactJs application. I have code information as below. But I get the error “11 # 11: host not found in upstream”. where could i have made a mistake Could you help ?
I get an upStream error even though my docker, nginx, and docker-compose file is correct. I had run the same codes before but I could not find where I made changes.
I’ve been researching for 2 days, but I get an upstream not found error.
I couldn’t find where I made a mistake. please can you help with the solution ?
I added the screenshot, it gives upstream not found error. I can’t find a solution
https://ibb.co/10BH3bv 1
web: I tried ports like 80, 443 but it is not resolved
default.conf
upstream frontend_server{
server web:3000;
}
server{
listen 80;
resolver 127.0.0.11;
location /.well-known/acme-challenge/ {
root /var/www/certbot;
}
location / {
return 301 https://$host$request_uri;
}
}
# SSL
server {
listen 443 ssl;
resolver 127.0.0.11;
ssl_certificate /usr/share/nginx/certificates/fullchain.pem;
ssl_certificate_key /usr/share/nginx/certificates/privkey.pem;
include /etc/ssl-options/options-nginx-ssl.conf;
ssl_dhparam /etc/ssl-options/ssl-dhparams.pem;
location / {
proxy_pass http://frontend_server;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $host;
proxy_redirect off;
#Websocket support
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
}
}
docker-compose.yml
version: '3'
services:
nginxproxy:
build:
context: .
dockerfile: Dockerfile.lets
container_name: nginxproxy
networks:
- nginx_network
restart: always
expose:
- 80
ports:
- "443:443"
- "80:80"
environment:
DOMAIN: mySiteaddress.com
EMAIL: myMail@hotmail.com
RENEW_INTERVAL: 12h
volumes:
- ./certificates:/usr/share/nginx/certificates
- ./default.conf:/etc/nginx/conf.d/default.conf
web:
build:
context: .
dockerfile: Dockerfile.dev
container_name: web
networks:
- nginx_network
expose:
- 3000
ports:
- "3000:3000"
depends_on:
- nginxproxy
volumes:
- /app/node_modules
- .:/app
tests:
build:
context: .
dockerfile: Dockerfile.dev
container_name: tests
volumes:
- /app/node_modules
- .:/app
command: ["npm","run","test"]
networks:
nginx_network:
driver: bridge
Dockerfile.dev
FROM node:alpine
WORKDIR '/app'
COPY package.json .
RUN npm install
COPY . .
EXPOSE 3000
CMD ["npm", "run", "start"]
Dockerfile.lets
FROM nginx:1.15-alpine
RUN apk add inotify-tools certbot openssl ca-certificates
WORKDIR /opt
COPY entrypoint.sh nginx-letsencrypt
COPY certbot.sh certbot.sh
COPY ssl-options/ /etc/ssl-options
COPY default.conf /etc/nginx/conf.d/default.conf
RUN chmod +x nginx-letsencrypt && \
chmod +x certbot.sh
EXPOSE 443
ENTRYPOINT ["./nginx-letsencrypt"]
CMD ["nginx", "-g", "daemon off;"]
package.json
{
"name": "customer_Flow",
"version": "1.0.0",
"description": "Customer flow",
"copyright": "Copyright 2019",
"license": "MIT",
"private": true,
"repository": {
"type": "git",
"url": "git@github.com:coreui/coreui-free-react-admin-template.git"
},
"dependencies": {
"@coreui/coreui": "^2.1.16",
"@coreui/coreui-plugin-chartjs-custom-tooltips": "^1.3.1",
"@coreui/icons": "0.3.0",
"@coreui/react": "^2.5.7",
"@date-io/date-fns": "^2.6.1",
"@devexpress/dx-react-chart": "^2.6.2",
"@devexpress/dx-react-chart-material-ui": "^2.6.2",
"@devexpress/dx-react-core": "^2.6.2",
"@devexpress/dx-react-grid": "^2.6.0",
"@devexpress/dx-react-grid-material-ui": "^2.6.0",
"@devexpress/dx-react-scheduler": "^2.6.0",
"@devexpress/dx-react-scheduler-material-ui": "^2.6.0",
"@material-ui/core": "^4.9.8",
"@material-ui/icons": "^4.9.1",
"bootstrap": "^4.4.1",
"chart.js": "^2.9.2",
"classnames": "^2.2.6",
"core-js": "^3.6.4",
"cors": "^2.8.5",
"corsproxy": "^1.5.0",
"date-fns": "^2.12.0",
"dotenv": "^8.2.0",
"enzyme": "^3.11.0",
"enzyme-adapter-react-16": "^1.15.2",
"flag-icon-css": "^3.4.6",
"font-awesome": "^4.7.0",
"http-proxy-middleware": "^0.20.0",
"jquery": "^3.4.1",
"jwt-decode": "^2.2.0",
"moment": "^2.24.0",
"node-sass": "^4.13.1",
"nodemon": "^2.0.2",
"prettier": "^1.18.2",
"prop-types": "^15.7.2",
"react": "^16.13.1",
"react-alert": "^6.0.1",
"react-alert-template-basic": "^1.0.0",
"react-app-polyfill": "^1.0.6",
"react-chartjs-2": "^2.9.0",
"react-dom": "^16.13.1",
"react-notifications-component": "^2.4.0",
"react-redux": "^7.2.0",
"react-router-config": "^5.1.1",
"react-router-dom": "^5.1.2",
"react-test-renderer": "^16.13.1",
"reactstrap": "^8.4.1",
"redux": "^4.0.5",
"redux-devtools-extension": "^2.13.8",
"redux-persist": "^6.0.0",
"redux-thunk": "^2.3.0",
"simple-line-icons": "^2.4.1",
"typescript": "^3.8.3"
},
"devDependencies": {
"react-scripts": "^3.4.1"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test",
"test:cov": "npm test -- --coverage --watchAll=false",
"test:debug": "react-scripts --inspect-brk test --runInBand",
"eject": "react-scripts eject"
},
"bugs": {
"url": "https://github.com/coreui/coreui-free-react-admin-template/issues"
},
"eslintConfig": {
"extends": "react-app"
},
"browserslist": [
">0.2%",
"not dead",
"not ie <= 9",
"not op_mini all"
],
"jest": {
"collectCoverageFrom": [
"src/**/*.{js,jsx}",
"!**/*index.js",
"!src/serviceWorker.js",
"!src/polyfill.js"
]
},
"engines": {
"node": ">=8.10",
"npm": ">=6"
}
}
``
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