Fabfile to setup a new application server

fabfile.py

from fabric.api import *
from fabric.context_managers import *
from fabric.contrib.files import *
import fabtools.require.git
import fabtools

def install_packages():
  packages = ['build-essential','git-core','python-dev']

  with settings(user='root', key_filename='./root-deploy.key'):
    for package in packages:
      run("apt-get -qq -y install %s" % package)

    run("groupadd -f example")
    run("id -u example &> /dev/null || useradd -g example -m -d /home/example example")

    keyfile = './example-deployment.pub'
    example_public_key = open(keyfile).read()

    sudo("mkdir -p /home/example/.ssh", user="example", shell=False)

    if exists('/home/example/.ssh/authorized_keys'):
      if not contains('/home/example/.ssh/authorized_keys', example_public_key):
        append('/home/example/.ssh/authorized_keys', example_public_key)

def setup_app_server():


  with settings(user='example', key_filename='./example-deployment.key'):

    fabtools.require.python.virtualenv("/home/example/python", user='example', system_site_packages=False, clear=True)

    with fabtools.python.virtualenv('/home/example/python'):

      # fabtools installs distribute as root. I want to install it as example user
      with cd("/tmp"):
        run("curl --silent -O http://python-distribute.org/distribute_setup.py")
        run("python distribute_setup.py")

      # If I don't install distribute manually this makes me sudo to root
      fabtools.require.python.distribute()
      fabtools.require.python.pip()

      put('ssh/config', '/home/example/.ssh/config')
      put('example-deployment.key', '/home/example/.ssh/',mode=0700)

      run("ssh-keyscan -t rsa,dsa github.com 2>&1 | sort -u - ~/.ssh/known_hosts > ~/.ssh/tmp_hosts")
      run("cat ~/.ssh/tmp_hosts >> ~/.ssh/known_hosts")

      fabtools.require.git.working_copy("https://github.com/example/example_project.git", path="example_project", branch="master", update=True)
      fabtools.require.python.requirements("~/example_project/requirements.txt")

Tip: instead of using apt-get directly, you can write:

fabtools.require.deb.packages([
    'build-essential',
    'git-core',
    'python-dev',
])