alionski / dv1562_lab2

Minimal app to show docker-swarm usage

(Probably nothing to see here if you are not my teacher.)

Structure should be like this:

├── backend
│   ├── Dockerfile
│   ├── requirements.txt (list of pip libs used)
│   ├── run.py (the Python app itself (Flask/uWSGI)
│   ├── static
│   │   └── images (has to be pre-created)
│   └── templates
│       └── main.html (Jinja template)
├── db
│   └── init_db.sh (script that sets up the Postgres db on startup)
├── db_data (NB! this has to be pre-created, bind volume for db data)
├── docker-compose.yml
├── frontend
│   └── nginx.conf (conf for reverse-proxying to uWSGI via Nginx)
└── README.md

Usage:

• install docker, docker-compose, docker-machine, docker-swarm
• clone this repo and cd into parent directory, i.e. dv1562_lab2
• mkdir db_data
• docker stack deploy -c docker-compose.yml lab_2 (don't improvise with lab_2, the service names are hard-coded in configs)
• wait a bit as services, esp. db, need time to start up
• go to http://127.0.0.1/ to try the app

(Python 3.7, pip 19.1)