meconlin / ansible-playbook-pythonapp

simple ansible playbook to install a python application

Sample ansible to deploy a python app using virtualenv and pip

based on https://github.com/bee-keeper/aws-ansible-django-deployment

Vagrant playbook available.

Required

You will need to install Ansible
If you want to test in Vagrant, you will need to install Vagrant

You can test the playbook using Vagrant

$vagrant up

Once vagrant vm is built you can re-run playbook using

$vargrant provision

Run the play book

$ ansible-playbook -i your-inventory.ini --private-key=/Users/mark/.ssh/gg_rsa --user=mconlin vagrant-main.yml

You can run commands inside the venv by using the full path to it.
This is not super elegant and Ansible has a built in command for Django management commands that be better in some cases.

Run python inside virtual env

- name: Run a python command inside the venv
  command: "{{ virtualenv_path }}/bin/python api-install-test.py"
  args:
    chdir: "{{ git_root }}"

Use the command wrapper in this repository venv_exec.j2 to execute commands inside a virtual env (eg. you are using make commands to run Django manage.py tasks)

- name: execute command inside virtualenv using wrapper
  command: "{{ virtualenv_path }}/execwrapper make clean"
  args:
    chdir: "{{ git_root }}"

Check the playbooks results inside vagrant

mark@mecmbp ~/workspace/ansible/poc-python-playbook (master *) $ vagrant ssh
Welcome to Ubuntu 14.04.1 LTS (GNU/Linux 3.13.0-36-generic x86_64)
.....
Last login: Sun Mar 27 01:52:27 2016 from 10.0.2.2
vagrant@vagrant-ubuntu-trusty-64:~$ cd /webapps/myapplication/myapplication/

vagrant@vagrant-ubuntu-trusty-64:/webapps/myapplication/myapplication$ . venv/bin/activate
(venv) vagrant@vagrant-ubuntu-trusty-64:/webapps/myapplication/myapplication$ pip install -r requirements.txt
Requirement already satisfied (use --upgrade to upgrade): Flask==0.10.1 in ./venv/lib/python2.7/site-packages (from -r requirements.txt (line 1))
Requirement already satisfied (use --upgrade to upgrade): Jinja2==2.7.2 in ./venv/lib/python2.7/site-packages (from -r requirements.txt (line 2))
Requirement already satisfied (use --upgrade to upgrade): MarkupSafe==0.19 in ./venv/lib/python2.7/site-packages (from -r requirements.txt (line 3))
Requirement already satisfied (use --upgrade to upgrade): Werkzeug==0.9.4 in ./venv/lib/python2.7/site-packages (from -r requirements.txt (line 4))
Requirement already satisfied (use --upgrade to upgrade): itsdangerous==0.24 in ./venv/lib/python2.7/site-packages (from -r requirements.txt (line 5))
Requirement already satisfied (use --upgrade to upgrade): wsgiref==0.1.2 in /usr/lib/python2.7 (from -r requirements.txt (line 6))