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Reputation: 21701

docker-composer up -d getting error postgres: Bind for 0.0.0.0:5432 failed: port is already allocated

I am on the Mac with docker install version 2.0.0.3 (31259)

docker-compose up -d

Removing ab-insight_postgres_1
Starting ab-insight_data_1 ... done
Recreating 31d36fb9c48a_ab-insight_postgres_1 ... error

ERROR: for 31d36fb9c48a_ab-insight_postgres_1  Cannot start service postgres: b'driver failed programming external connectivity on endpoint ab-insight_postgres_1 (5ed1c634dd3a43c2cd988ff7f14b5c1f3cde848e375c2915cf92420f819e21ac): Error starting userland proxy: Bind for 0.0.0.0:5432 failed: port is already allocated'

ERROR: for postgres  Cannot start service postgres: b'driver failed programming external connectivity on endpoint ab-insight_postgres_1 (5ed1c634dd3a43c2cd988ff7f14b5c1f3cde848e375c2915cf92420f819e21ac): Error starting userland proxy: Bind for 0.0.0.0:5432 failed: port is already allocated'
ERROR: Encountered errors while bringing up the project.

Here is my docker-compose.yml

version: '2'

services:
  web:
    restart: always
    build: ./web
    expose:
      - "8000"
    volumes:
      - /home/flask/app/web
    command: /usr/local/bin/gunicorn -w 2 -b :8000 project:app
    depends_on:
      - postgres

  nginx:
    restart: always
    build: ./nginx
    ports:
      - "80:80"
    volumes:
      - /www/static
    volumes_from:
      - web
    depends_on:
      - web

  data:
    image: postgres:11
    volumes:
      - /var/lib/postgresql
    command: "true"

  postgres:
    restart: always
    build: ./postgresql
    volumes_from:
      - data
    expose:
      - "5432"

and here is my Dockerfile

FROM python:3.6.1
MAINTAINER Ka So <[email protected]>

# Create the group and user to be used in this container
RUN groupadd flaskgroup && useradd -m -g flaskgroup -s /bin/bash flask

# Create the working directory (and set it as the working directory)
RUN mkdir -p /home/flask/app/web
WORKDIR /home/flask/app/web

# Install the package dependencies (this step is separated
# from copying all the source code to avoid having to
# re-install all python packages defined in requirements.txt
# whenever any source code change is made)
COPY requirements.txt /home/flask/app/web
RUN pip install --no-cache-dir -r requirements.txt

# Copy the source code into the container
COPY . /home/flask/app/web

RUN chown -R flask:flaskgroup /home/flask

USER flask

run docker ps

CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES

Upvotes: 0

Views: 2942

Answers (1)

Anshu Kumar
Anshu Kumar

Reputation: 827

This is happening due to postges running locally on your machine on the same port you have mentioned in your docker-compose.yml for postges service. Either stop the sevice running on your local machine.(not recommended) Or use other port to map to 5432 port of docker. To do so replace the

expose
  -5432

in postgresa service with the following code

 ports:
      - "5433:5432"

The whole docker compose file will look like:

version: '2'

services:
  web:
    restart: always
    build: ./web
    expose:
      - "8000"
    volumes:
      - /home/flask/app/web
    command: /usr/local/bin/gunicorn -w 2 -b :8000 project:app
    depends_on:
      - postgres

  nginx:
    restart: always
    build: ./nginx
    ports:
      - "80:80"
    volumes:
      - /www/static
    volumes_from:
      - web
    depends_on:
      - web

  data:
    image: postgres:11
    volumes:
      - /var/lib/postgresql
    command: "true"

  postgres:
    restart: always
    build: ./postgresql
    volumes_from:
      - data
    ports:
      - "5433:5432"

Upvotes: 1

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