Docker Swarm Deploy

add production module

vim trading_sample/settings/production.py

build image

docker image build --rm -t python:django ./src
docker image build --rm -t nginx:django ./nginx

add secrets

echo "<--username-->" | sudo docker secret create pg_username -
echo "<--password-->" | sudo docker secret create pg_password -

add configs

docker config create nginx nginx/nginx.conf
docker config create my_nginx nginx/my_nginx.conf

generate certificates

docker run --rm \
  -p 443:443 -p 80:80 --name letsencrypt \
  -v "/etc/letsencrypt:/etc/letsencrypt" \
  -v "/var/lib/letsencrypt:/var/lib/letsencrypt" \
  certbot/certbot certonly -n \
  -m "YOUR_EMAIL" \
  -d example.com \
  --standalone --agree-tos

deploy

docker stack deploy -c docker-compose.yml django

django setup

docker container exec -it <--django container--> bash

python manage.py migrate
python manage.py collectstatic
python manage.py createsuperuser

renew certificates

docker run --rm --name letsencrypt \
    -v "/etc/letsencrypt:/etc/letsencrypt" \
    -v "/var/lib/letsencrypt:/var/lib/letsencrypt" \
    -v "/usr/share/nginx/html:/usr/share/nginx/html" \
    certbot/certbot:latest \
    renew --quiet

references

• SSL with Docker Swarm, Let's Encrypt and Nginx
• docker-django-nginx-uwsgi-postgres-tutorial

helpful command

check address already in use or not

netstat -pna | grep $THE_PORT

check service errors

docker service ps --no-trunc <--service name-->

next step

1. split compose files
2. Django settings via Docker secrets