I'm in the process of deploying my flask application that runs on gunicorn and nginx. I'm able to get the app to run locally by creating a service for the flask app and another for nginx, and I'm able to run them using docker-compose.yml file. Now I know how to deploy a single service that I run using Dockerfile to ECS; however, I'm not sure how I would do the same for multiple services, so in others words, I want to know what is the ECS equivalent to running multiple services simultaneous using docker-compose.
I've tried having two containers when defining my task definition, but for reasons I'm unable to figure out the Tasks "fails to start".
Following is my docker-compose.yml file, to give you a better idea:
version: '3'
services:
flask_app:
container_name: flask_app
restart: always
build: ./flask_app
ports:
- "8000:8000"
command: gunicorn -w 3 -b 0.0.0.0:8000 wsgi:server
nginx:
container_name: nginx
restart: always
build: ./nginx
ports:
- "80:80"
depends_on:
- flask_app
Related
I had a setup docker on Django project, images are stored on server but whenever I upload changes on server and then run "docker-compose up --build" then it loss every images that I uploaded, path showing images there but I am not able to view it. I don't know want happened there. if anyone have idea what to do for that ? How to resolved this issue ? is there any things need to add in docker-compose file ?
Below is my docker compose file.
version: '3'
volumes:
web-django:
web-static:
services:
redis:
image: "redis:alpine"
web:
build: .
image: project_web
command: python manage.py runserver 0.0.0.0:8000
restart: always
volumes:
- web-django:/usr/src/app
- web-static:/usr/src/app/mediafiles
ports:
- "8000:8000"
depends_on:
- redis
celery:
image: project_web
command: celery -A project_name worker -l info
restart: always
depends_on:
- web
- redis
celery-beat:
image: citc_web
command: celery -A project_name beat -l info
restart: always
depends_on:
- web
- redis
I want solution of it, what i missing on above file and want to resolve it.
I am trying to deploy my Django application to Digital ocean droplets, using the less expensive one, that gives me 512 mb of ram, 1 CPU and 10 gigs of SSD. Then, after I set up everything properly, I run docker-compose up --build to see if everything is fine. It launches all. In my docker compose, I use a postgres instance, a redis one and a celery one, and the django application I wrote. If that matters, here is the docker-compose file
version: "3.9"
services:
db:
container_name: my_table_postgres
image: postgres
ports:
- 5432/tcp
volumes:
- my_table_postgres_db:/var/lib/postgresql/data
environment:
- POSTGRES_DB=my_table_postgres
- POSTGRES_USER=dev
- POSTGRES_PASSWORD=blablabla
redis:
container_name: redis
image: redis
ports:
- 6739:6739/tcp
environment:
- REDIS_HOST=redis-oauth-user-service
volumes:
- redis_data:/var/lib/redis/data/
my_table:
container_name: my_table
build: .
command: python manage.py runserver 0.0.0.0:5000
volumes:
- .:/api
ports:
- "5000:5000"
depends_on:
- db
- redis
celery:
image: celery
container_name: celery
restart: unless-stopped
build:
context: .
dockerfile: Dockerfile
command: ['python', '-m', 'celery', '-A', 'mytable' ,'worker', '-l', 'INFO']
volumes:
- .:/api
depends_on:
- redis
- my_table
links:
- redis
volumes:
my_table_postgres_db:
redis_data:
Then, all starts up quite slowly, but after I try to make a request from something like postman, in the terminal of docker compose, the main process of the django app says that my_table exited with code 247. Can you please tell me why? Do I need to change some setup? Or is the droplet ram too low?
Thank you a lot
It was just a problem of dimensions. In fact, the cluster used to have to little RAM to support all the requirements. So, after changing the droplet, everything worked fine.
I have dockerized a Django project with Postgres, Gunicorn, and Nginx following this tutorial.
Now i want to move the application to azure container instances. Can i simply create a container group following this tutorial, and expect the container images to communicate the right way?
To run the project locally i use docker-compose -f docker-**compose.prod.yml** up -d --build But how is the communication between the containers handled in azure container instances?
The docker-compose.prod.yml looks like this:
version: '3.7'
services:
web:
build:
context: ./app
dockerfile: Dockerfile.prod
command: gunicorn hello_django.wsgi:application --bind 0.0.0.0:8000
volumes:
- static_volume:/home/app/web/staticfiles
- media_volume:/home/app/web/mediafiles
expose:
- 8000
env_file:
- ./.env.prod
depends_on:
- db
db:
image: postgres:12.0-alpine
volumes:
- postgres_data:/var/lib/postgresql/data/
env_file:
- ./.env.prod.db
nginx:
build: ./nginx
volumes:
- static_volume:/home/app/web/staticfiles
- media_volume:/home/app/web/mediafiles
ports:
- 1337:80
depends_on:
- web
volumes:
postgres_data:
static_volume:
media_volume:
The containers will be able to communicate with each others using the services names (web, db, nginx) because they are part of the container group's local network. Also, take a look at the documentation as you can't use docker-composes file directly unless you use the edge version of Docker Desktop.
On another note, upon restarting, you will loose whatever you stored in your volumes because you are not using some kind of external storage. Look at the documentation.
I'm trying to connect to an instance of django running in docker. As far as i can tell I've opened the correct port, and see in docker ps that there is tcp on port 8000, but it there is no forwarding to the port.
After reading the docker compose docs on ports, i would expect this to work (I can view pgadmin on 127.0.0.1:9000 too).
My docker compose:
version: '3'
services:
postgresql:
restart: always
image: postgres:latest
environment:
POSTGRES_USER: pguser
POSTGRES_PASSWORD: pgpassword
POSTGRES_DB: pgdb
pgadmin:
restart: always
image: dpage/pgadmin4:latest
environment:
PGADMIN_DEFAULT_EMAIL: admin#admin.com
PGADMIN_DEFAULT_PASSWORD: admin
GUNICORN_THREADS: 4
PGADMIN_LISTEN_PORT: 9000
volumes:
- ./utility/pgadmin4-servers.json:/pgadmin4/servers.json
depends_on:
- postgresql
ports:
- "9000:9000"
app:
build: .
environment:
POSTGRES_DB: pgdb
POSTGRES_USER: pguser
POSTGRES_PASSWORD: pgpassword
POSTGRES_HOST: postgresql
volumes:
- .:/code
ports:
- "127.0.0.1:8000:8000"
- "5555:5555"
depends_on:
- postgresql
- pgadmin
I have tried with the following combinations for (app) ports, as are suggested here:
app:
...
ports:
- "8000"
- "8000:8000"
- "127.0.0.1:8000:8000"
but i still see This site can’t be reached 127.0.0.1 refused to connect. on trying to access the site.
I'm sure that this is a port forwarding problem, and that my server is turning correctly in django because i can run a docker attach to the container and curl a url with the expected response.
What am i doing wrong?
I was running my application using the command:
docker-compose run app python3 manage.py runserver 0.0.0.0:8000
With docker-compose you need to use the argument --service-ports to:
Run command with the service's ports enabled and mapped to the host.
Thus my final command looked like this:
docker-compose run --service-ports app python3 manage.py runserver 0.0.0.0:8000
Documentation on run can be found here
If you are running docker inside a virtual machine then you need to access your application through the virtual machine IP address and not using localhost or 127.0.0.1. Try to get the virtual machine IP. Also please specify in which platform/environment you installed and running the docker.
I want to create two docker services one is mongodb service another one is web service build using django. And i need that web-service (django app) which need to be connected to that mongodb docker service.
but i dont know how to connect with mongodb docker service in my django application which is also a service running in a same docker swarm .`This is my docker-compose.yml:
version: '3'
services:
mongo:
image: mongo:latest
command: mongod --storageEngine wiredTiger
ports:
- "27017:27017"
restart: always
environment:
MONGO_INITDB_ROOT_USERNAME: root
MONGO_INITDB_ROOT_PASSWORD: example
web:
build: .
command: python3 manage.py runserver 0.0.0.0:8000
volumes:
- .:/code
ports:
- "8000:8000"
links:
- mongo
depends_on:
- mongo
Here i tried with mongoengine in settings.py of django application but failed
MONGO_DATABASE_NAME = "reg_task21"
MONGO_HOST = "mongo"
mongoengine.connect(db=MONGO_DATABASE_NAME, host=MONGO_HOST,port=27017)
You should add the username and password to connect statement:
mongoengine.connect(db=MONGO_DATABASE_NAME, username='root', password='example', host=MONGO_HOST,port=27017)