=== Allgemein ===

IP ermitteln:
  arp -a

login:
  ssh user@ip

Virtual environment
    cd sese_project/serious-seeds
    python3 -m venv env
    source env/bin/activate
    pip install -r app/requirements.txt

Set Environment Variables
    export DJANGO_ENV=production
    export POSTGRES_DB=<db>
    export POSTGRES_USER=<user>
    export POSTGRES_PASSWORD=<pw>

Start Dev Server
      python3 manage.py runserver 0.0.0.0:8000


=== Turn off power management for network adapter ===

Create a new systemd service file:

sudo systemctl edit --force --full wifipower.service

Paste the following content into the file: 

Code

    [Unit]
    Description=Disable WiFi Power Management
    [Service]
    Type=oneshot
    RemainAfterExit=yes
    ExecStart=/sbin/iw dev wlan0 set power_save off
    [Install]
    WantedBy=multi-user.target

Save and exit the editor. 

Enable the service:
    sudo systemctl enable wifipower.service. 

Start the service immediately:
    sudo systemctl start wifipower.service

or reboot the Pi for it to take effect:
    sudo reboot

=== Create Database ===

  sudo su postgres
  psql
  CREATE DATABASE <db>;
  CREATE USER <user>;
  ALTER USER <user> with encrypted password '<pw>';
  GRANT ALL PRIVILEGES ON DATABASE <db> TO <user>;
  ALTER DATABASE <db> OWNER TO <user>;


=== Deployment Checklist ===

- Static Files
  python manage.py collectstatic

With cleanup:
  python manage.py collectstatic --noinput --clear

=== Nginx ===

  sudo nano /etc/nginx/sites-available/seriousseeds

Next, enable the configuration:

  sudo ln -s /etc/nginx/sites-available/seriousseeds /etc/nginx/sites-enabled/

  sudo nginx -t
  sudo systemctl restart nginx

Analyse:

  sudo nginx -T | sed -n '1,200p' | grep -n 'proxy_pass\|upstream'


=== Gunicorn ===

  sudo nano /etc/systemd/system/gunicorn.service

Bei Änderungen:

  systemctl daemon-reload
  sudo systemctl restart gunicorn
  
followed by a hard browser refresh (Ctrl + Shift + R).


=== Rollout Release ===

# In deinem Produktionsverzeichnis
  cd /pfad/zu/serious-seeds

# Aktiviere Virtual Environment
  source env/bin/activate

# Hole neueste Tags
  git fetch --tags

# Liste verfügbare Tags auf
  git tag -l

# Checke das gewünschte Tag aus (mit lokalem Branch, um keinen detached-head zu bekommen)
  git checkout -b production-v1.0.0 tags/v1.0.0

# Installiere/Update Dependencies
  pip install -r app/requirements.txt

# Führe Migrations aus (falls nötig)
  python app/manage.py migrate

# Sammle Static Files
  python app/manage.py collectstatic --noinput

# Starte Gunicorn neu
  sudo systemctl restart gunicorn


=== Tutorial ===

https://www.teachmemicro.com/building-a-django-webserver-on-raspberry-pi-a-step-by-step-guide/

https://www.digitalocean.com/community/tutorials/how-to-set-up-django-with-postgres-nginx-and-gunicorn-on-ubuntu#installing-the-packages-from-the-ubuntu-repositories