Create openslides inside ubuntu 16.04

openslides.yml

---
- hosts: openslides
  become: yes

  vars:
    settings_path: /etc/openslides
    user_data_path: /usr/local/lib/openslides
    secure_key: 'MakeMeRANDOM'
    domain: openslides.oshahn.de

  tasks:

  - name: Activate universe sources
    copy:
      dest: /etc/apt/sources.list
      content: |
        deb http://archive.ubuntu.com/ubuntu xenial main universe

  - name: Update System
    apt:
      update_cache: yes
      upgrade: dist
      cache_valid_time: 3600

  - name: Install packages
    apt:
      name: "{{ item }}"
    with_items:
    - nginx
    - python3-bs4
    - python3-djangorestframework
    - python3-html5lib
    - python3-django-jsonfield
    - python3-natsort
    - python3-reportlab
    - python3-roman
    - python3-setuptools
    - python3-sockjs-tornado
    - python3-whoosh
    - python3-pypdf2
    - python3-pip

  - name: Create user openslides
    user:
      name: openslides
      system: yes
      createhome: no

  - name: Install openslides via pip
    pip:
      name: openslides
      executable: pip3

  - name: Create settings path
    file:
      path: "{{ settings_path }}"
      state: directory
      mode: 0755

  - name: create user data path
    file:
      path: "{{ user_data_path }}"
      state: directory
      mode: 0755
      owner: openslides

  - name: Create Settings
    copy:
      dest: "{{ settings_path }}/settings.py"
      content: |
        from openslides.global_settings import *
        SECRET_KEY = '{{ secure_key }}'
        DATABASES = {
            'default': {
                'ENGINE': 'django.db.backends.sqlite3',
                'NAME': '{{ user_data_path }}/database.sqlite',
            }
        }
        MEDIA_ROOT = '{{ user_data_path }}/media/'
        SEARCH_INDEX = '{{ user_data_path }}/search_index/'
        STATIC_ROOT = '{{ user_data_path }}/collected_static/'

  - name: Migrate Database
    command: openslides migrate --pythonpath {{ settings_path }} --settings settings --noinput
    args:
      creates: "{{ user_data_path }}/database.sqlite"
    become_user: openslides

  - name: Collect Static
    command: openslides collectstatic --pythonpath {{ settings_path }} --settings settings --noinput
    args:
      creates: "{{ user_data_path }}/collected_static/css"
    become_user: openslides

  # The unit should be shipped with openslides
  - name: Copy systemd-unit for openslides
    copy:
      dest: /etc/systemd/system/openslides.service
      content: |
        [Unit]
        Description=Presentation and assembly system
        Wants=network.target

        [Service]
        ExecStart=/usr/local/bin/openslides runserver 0.0.0.0:8400 --pythonpath /etc/openslides --settings settings
        User=openslides

        [Install]
        WantedBy=multi-user.target
    register: createOpenslidesSystemFile

  - name: Reload systemd units
    command: systemctl daemon-reload
    when: createOpenslidesSystemFile.changed

  - name: Start and enalbe openslides
    service:
      name: openslides
      enabled: yes
      state: started

  - name: Create nginx config
    copy:
      dest: "/etc/nginx/sites-enabled/openslides"
      content: |
        server {
            server_name {{ domain }};
            listen 0.0.0.0:80;
            listen [::]:80;

            location /static/ {
               alias {{ user_data_path }}/collected_static/;
            }

            location /media/ {
                alias {{ user_data_path }}/media/;
            }

            location / {
                proxy_pass_header Server;
                proxy_set_header Host $http_host;
                proxy_redirect off;
                proxy_set_header X-Real-IP $remote_addr;
                proxy_set_header X-Scheme $scheme;
                proxy_pass http://localhost:8400;
            }
        }
    notify:
    - Restart nginx

  handlers:

  - name: Restart nginx
    service:
      name: nginx
      state: restarted

This ansible script can not run in ubuntu 14.04, because ubuntu 14.04 does not bring the necessary dependencies and does not run with systemd.