CannotPullContainerError on Deploying Multi-container App on ElasticBeanstalk - django

Question

I have a multi-container app which I want to deploy on ElasticBeanstalk. Below are my files.
Dockerfile
FROM python:2.7
WORKDIR /app
ADD . /app
RUN apt-get update && \
apt-get upgrade -y && \
apt-get install -y \
apt-utils \
git \
python \
python-dev \
libpcre3 \
libpcre3-dev \
python-setuptools \
python-pip \
nginx \
supervisor \
default-libmysqlclient-dev \
python-psycopg2 \
libpq-dev \
sqlite3 && \
pip install -U pip setuptools && \
rm -rf /var/lib/apt/lists/*
RUN pip install -r requirements.txt
EXPOSE 8000
RUN chmod +x entry_point.sh
docker-compose.yml
version: "2"
services:
db:
restart: always
container_name: docker_test-db
image: postgres:9.6
expose:
- "5432"
mem_limit: 10m
environment:
- POSTGRES_NAME=postgres
- POSTGRES_USER=postgres
- POSTGRES_PASSWORD=postgres
- POSTGRES_DB=docker_test
redis:
restart: always
image: redis:3.0
expose:
- "6379"
mem_limit: 10m
web:
# replace username/repo:tag with your name and image details
restart: always
build: .
image: docker_test
container_name: docker_test-container
ports:
- "8000:8000"
environment:
- DATABASE=db
- POSTGRES_NAME=postgres
- POSTGRES_USER=postgres
- POSTGRES_PASSWORD=postgres
- POSTGRES_DB=docker_test
mem_limit: 500m
depends_on:
- db
- redis
entrypoint: ./entry_point.sh
command: gunicorn docker_test.wsgi:application -w 2 -b :8000 --timeout 120 --graceful-timeout 120 --worker-class gevent
celery:
image: docker_test
container_name: docker_test-celery
command: celery -A docker_test worker -l info
links:
- db
- redis
mem_limit: 10m
depends_on:
- web
cbeat:
image: docker_test
container_name: docker_test-cbeat
command: celery beat --loglevel=info
links:
- db
- redis
mem_limit: 10m
depends_on:
- web
I works file when I run it on my local system. But when I upload it on elasticbeanstalk, It gives my following error.
ECS task stopped due to: Essential container in task exited. (celery:
db: cbeat: web: CannotPullContainerError: API error (404): pull access
denied for docker_test, repository does not exist or may require
'docker login' redis: )
I transform docker-compose.yml to Dockerrun.aws.json by using container-transform. For above file, my Dockerrun.aws.json is following.
{
"AWSEBDockerrunVersion": 2,
"containerDefinitions": [
{
"command": [
"celery",
"beat",
"--loglevel=info"
],
"essential": true,
"image": "docker_test",
"links": [
"db",
"redis"
],
"memory": 10,
"name": "cbeat"
},
{
"command": [
"celery",
"-A",
"docker_test",
"worker",
"-l",
"info"
],
"essential": true,
"image": "docker_test",
"links": [
"db",
"redis"
],
"memory": 10,
"name": "celery"
},
{
"environment": [
{
"name": "POSTGRES_NAME",
"value": "postgres"
},
{
"name": "POSTGRES_USER",
"value": "postgres"
},
{
"name": "POSTGRES_PASSWORD",
"value": "postgres"
},
{
"name": "POSTGRES_DB",
"value": "docker_test"
}
],
"essential": true,
"image": "postgres:9.6",
"memory": 10,
"name": "db"
},
{
"essential": true,
"image": "redis:3.0",
"memory": 10,
"name": "redis"
},
{
"command": [
"gunicorn",
"docker_test.wsgi:application",
"-w",
"2",
"-b",
":8000",
"--timeout",
"120",
"--graceful-timeout",
"120",
"--worker-class",
"gevent"
],
"entryPoint": [
"./entry_point.sh"
],
"environment": [
{
"name": "DATABASE",
"value": "db"
},
{
"name": "POSTGRES_NAME",
"value": "postgres"
},
{
"name": "POSTGRES_USER",
"value": "postgres"
},
{
"name": "POSTGRES_PASSWORD",
"value": "postgres"
},
{
"name": "POSTGRES_DB",
"value": "docker_test"
}
],
"essential": true,
"image": "docker_test",
"memory": 500,
"name": "web",
"portMappings": [
{
"containerPort": 8000,
"hostPort": 8000
}
]
}
],
"family": "",
"volumes": []
}
How can I resolve this problem?

Answer 1

Please push the image "docker_test" to either dockerhub or ECR for Beanstalk to pull image from. Currently, it's on your local & the ECS agent doesn't know about it.
Tag & Push docker_test image to a registry like dockerhub & ECR.
Update image repo URL in Dockerrun.aws.json.
Allow Beanstalk to pull the image.

Answer 2

I'm not that familiar with EB, but I am pretty familiar with ECR and ECS.
I usually get that error when I try pull an image from an empty repo on ECR, in other words the ECR repo was created but you havn't pushed any docker images to the repo yet.
This can also happen when you try pull an image from ECR and it can't find the version number of the image in the tag. I suggest that you change your docker-compose.yml file to use the latest version of the images. This will mean that everywhere you mention the image docker_test you will need suffix it with ":latest"
Something like this:
image: docker_test:latest
I will post my whole docker-compose.yml I made for you at the end of the reply.
I would suggest that you have a look at this doc:https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/create_deploy_docker.container.console.html see the section:"Using Images from an Amazon ECR Repository" they explain how you can resolve the docker login issue.
I hope that helps. Please reply if you have any questions regarding this.
version: "2"
services:
db:
restart: always
container_name: docker_test-db
image: postgres:9.6
expose:
- "5432"
mem_limit: 10m
environment:
- POSTGRES_NAME=postgres
- POSTGRES_USER=postgres
- POSTGRES_PASSWORD=postgres
- POSTGRES_DB=docker_test
redis:
restart: always
image: redis:3.0
expose:
- "6379"
mem_limit: 10m
web:
# replace username/repo:tag with your name and image details
restart: always
build: .
image: docker_test:latest
container_name: docker_test-container
ports:
- "8000:8000"
environment:
- DATABASE=db
- POSTGRES_NAME=postgres
- POSTGRES_USER=postgres
- POSTGRES_PASSWORD=postgres
- POSTGRES_DB=docker_test
mem_limit: 500m
depends_on:
- db
- redis
entrypoint: ./entry_point.sh
command: gunicorn docker_test.wsgi:application -w 2 -b :8000 --timeout 120 --graceful-timeout 120 --worker-class gevent
celery:
image: docker_test
container_name: docker_test-celery
command: celery -A docker_test worker -l info
links:
- db
- redis
mem_limit: 10m
depends_on:
- web
cbeat:
image: docker_test:latest
container_name: docker_test-cbeat
command: celery beat --loglevel=info
links:
- db
- redis
mem_limit: 10m
depends_on:
- web