When I try to connect my backend (using Sequelize) I get this following error:
error ConnectionRefusedError [SequelizeConnectionRefusedError]: connect ECONNREFUSED 127.0.0.1:5432
docker-compose.yml:
version: "3.7"
services:
frontend:
build:
context: ./client
dockerfile: Dockerfile
image: client
ports:
- "3000:3000"
volumes:
- ./client:/usr/src/app
backend:
build:
context: ./server
dockerfile: Dockerfile
image: server
ports:
- "8000:8000"
volumes:
- ./server:/usr/src/app
db:
image: postgres
environment:
POSTGRES_DB: ckl
POSTGRES_USER: postgres
POSTGRES_PASSWORD: docker
ports:
- "5432:5432"
What am I doing wrong ?
Thanks in advance
Assuming your backend is connecting to the db you should add a depends_on:
backend:
build:
context: ./server
dockerfile: Dockerfile
image: server
depends_on:
- db
ports:
- "8000:8000"
volumes:
- ./server:/usr/src/app
The db will now be accessible at the host db:5432 if your application is configured to connect to localhost:5432 or 172.0.0.1:5432 you'll need to replace the hostname localhost with db. Your postgres connection string might also not have a host and might be trying to connect to localhost by default. Should be able to look at sequelize to figure out how to pass a host.
Related
I have this really simple setup with a web app in one container and a Postgres service running in another container.
I need to connect to the Postgres container and thought PGHOST="db" would point to that container ..?
But I keep getting Error: getaddrinfo ENOTFOUND "db" at GetAddrInfoReqWrap.onlookup that I read as; can't find the "db" host ...
What am I missing here?
version: "3.9"
services:
web:
build: .
ports:
- "8081:3011"
links:
- db
environment:
- PGHOST="db"
- PGDATABASE="testdb"
- PGUSER="postgres"
- PGPASSWORD="postgres"
db:
image: postgres
ports:
- "5432:5432"
volumes:
- /usr/local/var/postgresql#13
Try this config. You don't need quotes when passing env variables. And it is better to use depends_on here to make sure DB is up and running before your app starts.
version: "3.9"
services:
web:
build: .
ports:
- "8081:3011"
depends_on:
- db
environment:
- PGHOST=db
- PGDATABASE=testdb
- PGUSER=postgres
- PGPASSWORD=postgres
db:
image: postgres
ports:
- "5432:5432"
volumes:
- /usr/local/var/postgresql#13
I'm running my containers via a docker compose file. They are in the same network and I can ping from my backend container to my database container. I use the database name as the hostname in the connection string and it doesn't bring any errors that it couldn't find the host. Instead, it just hangs up and times out.
I have a test endpoint which is just suppose to test the connection. When you use that endpoint, database container logs "invalid packet length", and on the frontend, nothing happens, then it times out. I have no idea whats wrong. Any help?
version: '3.2'
services:
server:
restart: always
build:
dockerfile: Dockerfile
context: ./nginx
depends_on:
- backend
- frontend
- database
ports:
- '5000:80'
networks:
- app_network
database:
image: postgres:latest
container_name: database
ports:
- "5432:5432"
restart: always
hostname: database
environment:
POSTGRES_PASSWORD: 1234
POSTGRES_USER: postgres
backend:
build:
context: ./backend
dockerfile: ./Dockerfile
image: kalendae:backend
hostname: backend
container_name: backend
environment:
- WAIT_HOSTS=database:5432
- DATABASE_HOST=database
- DATABASE_PORT=5432
- PORT=5051
frontend:
build:
context: ./frontend
dockerfile: ./Dockerfile
image: kalendae:frontend
hostname: frontend
container_name: frontend
environment:
- WAIT_HOSTS=backend:5051
- REACT_APP_BACKEND_HOST=localhost
- REACT_APP_BACKEND_PORT=5051
I'm trying to make requests to my server container from my client app in another container. The Docker Compose docs state that the network is setup automatically, so shouldn't all ports be accessible from all containers? When I make a curl request to port 4000 from outside of the container (in a fresh terminal), it works. However when I enter the client container (selektor-client) and try the same request, it fails.
curl --request POST http://localhost:4000/api/music
What am I doing wrong?
docker-compose.yaml:
version: "3"
services:
client:
container_name: selektor-client
restart: always
build: ./client
ports:
- "3000:3000"
volumes:
- ./client/:/client/
- /client/node_modules/
command: ["yarn", "start"]
server:
container_name: selektor-server
restart: always
build: ./server
ports:
- "4000:4000"
volumes:
- ./server/:/server/
depends_on:
- mongo
command: ["yarn", "start"]
mongo:
container_name: selektor-mongo
command: mongod --noauth
build: .
restart: always
volumes:
# - ./mongo-init.js:/docker-entrypoint-initdb.d/mongo-init.js:ro
- data-volume:/data/db
ports:
- "27017:27017"
volumes:
data-volume:
When you call containers of the same stack each other, the host name is, by default, the service name, and the port is the internal port: <servicename>:<internal_port>. So, based on this part of your example:
version: "3"
server:
container_name: selektor-server
restart: always
build: ./server
ports:
- "4000:4000"
volumes:
- ./server/:/server/
depends_on:
- mongo
command: ["yarn", "start"]
The url you client have to use to reach the server is http://server:4000
I had the same problem . my solution was registering network and giving subnet mast to the network and register the static ip to each container :
version: "3"
networks:
my_network:
driver: bridge
ipam:
config:
- subnet: 172.20.0.0/24
services:
mongodb:
image: mongo:4.2.1
container_name: mongo
command: mongod --auth
hostname: mongo
networks:
my_network:
ipv4_address: 172.20.0.5
volumes:
- /data/db/mongo:/data/db
ports:
- "27017:27017"
rabitmq:
hostname: rabbitmq
container_name: rabbitmq
image: rabbitmq:latest
networks:
my_network:
ipv4_address: 172.20.0.3
volumes:
- /var/lib/rabbitmq:/data/db
ports:
- "5672:5672"
- "15672:15672"
restart: always
you can access through IP addresses
-- Docker FIle
FROM node:4.4.2
EXPOSE 3000
ENV NODE_ENV test
WORKDIR /app
COPY ["package.json", "npm-shrinkwrap.json*", "./"]
RUN npm install --silent
COPY . /app
CMD node server.js
-- DOCKER-COMPOSE
version: "2"
services:
postgresql:
image: postgres:9.5.21
container_name: postgresql
volumes:
- '$HOME/DOCKER_VOLUME/db-data1:$HOME/DOCKER_VOLUME/var/lib/postgres'
environment:
POSTGRES_PASSWORD: <PWD>
POSTGRES_DB: <DB>
POSTGRES_USER: <UERS>
ports:
- '5432:5432'
redis:
image: redis
container_name: redis
ports:
- '6379:6379'
broker:
image: eclipse-mosquitto
container_name: mosquitto
volumes:
- $HOME/DOCKER_VOLUME/etc/mosquitto:$HOME/DOCKER_VOLUME/etc/mosquitto:ro
- $HOME/DOCKER_VOLUME/var/log/mosquitto:$HOME/DOCKER_VOLUME/var/log/mosquitto:rw
ports:
- '1883:1883'
app:
container_name: ms_user_manager
environment:
NODE_ENV: test
build: .
volumes:
- .:/app
- /app/node_modules
depends_on:
- postgresql
- redis
- broker
ports:
- '3000:3000'
I am able to access postgres, redis outside of container but nodejs app unable to connect to both & giving error
Redis - connection to 0.0.0.0:6379 failed - connect ECONNREFUSED 0.0.0.0:6379"
Postgres - Error: connect ECONNREFUSED 0.0.0.0:5432
So any idea, what I am doing wrong or what i missed.
Your Node.js app should try to connect to redis:6379. Change this in your application configuration. At the moment it looks like it is trying to connect to localhost (which works probably when you run your server locally on the host).
I have two docker container one with my nodejs webapp and one with a mongo db running.
I build a authentication in my mongo db container and now i get this error message:
mongo | 2018-08-22T13:48:24.102+0000 I ACCESS [conn1] SASL SCRAM-SHA-1 authentication failed for blub on admin from client XXXXX; UserNotFound: Could not find user blub#admin
mongo | 2018-08-22T13:48:24.105+0000 I NETWORK [conn1] end connection XXXXX (0 connections now open)
app | (node:16) UnhandledPromiseRejectionWarning: MongoError: Authentication failed.
I build both container with this docker-compose.yml
version: "2"
services:
app:
container_name: app
restart: always
build: .
ports:
- "3000:3000"
links:
- mongo
mongo:
container_name: mongo
image: mongo
volumes:
- ./data:/data/db
ports:
- "27017:27017"
environment:
- MONGODB_INITDB_ROOT_USERNAME=blub
- MONGODB_INITDB_ROOT_PASSWORD=pass
My app connects with the mongodb like this:
mongoose.connect("mongodb://blub:pass#mongo:27017/");
I found a solution:
My docker-compose:
version: '2'
services:
app:
container_name: app
restart: always
build: .
ports:
- 3000:3000
links:
- mongodb
mongodb:
container_name: mongodb
image: mongo:3.4
ports:
- 27017:27017
volumes:
- ./data:/data/db
environment:
- MONGO_INITDB_ROOT_USERNAME=admin
- MONGO_INITDB_ROOT_PASSWORD=admin123456
command: mongod
the connection in the nodejs app: mongoose.connect("mongodb://admin:admin123456#mongodb:27017/");
But i actually can´t figure out, why it isn't working on my first try.