An example fabfile for fabric 0.9

1. from fabric.api import *
from os import path
env.roledefs = {
'web': ['172.16.12.1', '172.16.12.2', '172.16.12.3',],
'media': ['172.16.12.4',],
'staging': ['172.16.12.5',],
'testing': ['192.168.56.3',],
'database': ['172.16.12.7', '172.16.12.8',],
}
env.site_list = []
env.root_path = '/var/websites'
### Setup environments
def testing(site=None):
env.hosts = env.roledefs['testing']
env.user = 'coordt'
if site:
get_site_list(site)
def staging(site=None):
env.hosts = env.roledefs['staging']
env.user = 'staginguser'
if site:
get_site_list(site)
def production(site=None):
env.hosts = env.roledefs['web']
env.user = 'produser'
if site:
get_site_list(site)
def get_site_list(site=None):
if not site:
site = prompt('Please specify which site (a comma delimited list is
accepted): ', validate=r'^[w-.,]+$')
if isinstance(site, (tuple, list)):
env.site_list = site
else:
env.site_list = site.split(',')
### Host Tasks
def check_host():
"""
Check that the host has all the required commands installed
"""
local("echo Checking for required commands")
required_commands = ['wget', 'python', 'tar', 'gzip', 'hg', 'sudo', 'chown',
'chmod', 'patch', 'grep',]
for command in required_commands:
run('which %s' % command)
def install_package(package):
"""
Install a package on a host using apt-get
"""

2. sudo('apt-get install %s' % package)
### Site Tasks
def clean(site=None):
"""
Remove .pyc files from a site. Needs a site parameter specified.
"""
if not env.site_list:
get_site_list(site)
for item in env.site_list:
full_path = path.join(env.root_path, item)
sudo("find %s -name '*.pyc' -depth -exec rm {} ;" % full_path)
def info(site=None):
"""
Get the current revision of a site
"""
if not env.site_list:
get_site_list(site)
for item in env.site_list:
full_path = path.join(env.root_path, item)
run('svn info %s | grep Revision' % full_path)
def ls(site=None, flags=''):
"""
Get a listing of a site
"""
if not env.site_list:
get_site_list(site)
for item in env.site_list:
full_path = path.join(env.root_path, item)
run('ls %s %s' % (flags, full_path))
def push(rev=None, externals=False, rel_path='', site=None):
"""
Push out changes to all the servers.
"""
if not env.site_list:
get_site_list(site)
if not externals:
ignore=" --ignore-externals"
else:
ignore=""
for item in env.site_list:
full_path = os.path.join(env.root_path, item, rel_path)
run('svn info %s | grep Revision' % full_path)
if rev is None:
sudo('svn up%s %s' % (ignore, full_path))
else:
sudo('svn up%s -r %s %s' % (ignore, rev, full_path))
def ensite(site=None):

3. """
Enable an Apache site configuration.
"""
if not env.site_list:
get_site_list(site)
for item in env.site_list:
sudo('a2ensite %s' % item)
def dissite(site=None):
"""
Disable an Apache site configuration.
"""
if not env.site_list:
get_site_list(site)
for item in env.site_list:
sudo('a2dissite %s' % item)
### Apache tasks
def restart():
"""
Restart Apache
"""
sudo('/etc/init.d/apache2 restart')
def reload():
"""
Reload Apache settings
"""
sudo('/etc/init.d/apache2 reload')
def enmod(mod=None):
"""
Enable an Apache module
"""
if not mod:
mod = prompt('Please specify which module to enable (a comma delimited list
is accepted): ', validate=r'^[w-.,]+$')
mod_list = mod.split(',')
for item in mod_list:
sudo('a2enmod %s' % item)
def dismod(mod=None):
"""
Disable an Apache module
"""
if not mod:
mod = prompt('Please specify which module to disable (a comma delimited
list is accepted): ', validate=r'^[w-.,]+$')
mod_list = mod.split(',')
for item in mod_list:
sudo('a2dismod %s' % item)