This is a copy of my current fabric configuration

fabfile.py

from fabric.api import env, put, run, sudo
from fabric.contrib.files import upload_template

env.hosts = ['host1', 'host2']
env.password = 'your_password'

def upgrade():
    run('apt-get update && apt-get -y upgrade')
    reboot()

def reboot():
    run('reboot')

def poweroff():
    run('poweroff')

def hostname():
    run('hostname')

def install_avahi():
    run('apt-get -y install avahi-daemon')

def install_mdns():
    run('apt-get -y install libnss-mdns')

def install_monit():
    put('./monit-5.2.5-linux-x86.tar', '/tmp/monit-5.2.5-linux-x86.tar')
    run('tar xvf /tmp/monit-5.2.5-linux-x86.tar')
    hostname = run('hostname')
    print 'hostname', hostname
    upload_template('./monitrc', '/etc/monitrc', context={'hostname': hostname})
    run('chmod 0700 /etc/monitrc')
    run('./monit-5.2.5/bin/monit -d 5')

def install_everything():
    install_avahi()
    install_mdns()
    install_monit()

def change_hostname(hostname):
    upload_template('./hostname', '/etc/hostname', context={'hostname': hostname})
    reboot()

hostname

%(hostname)s

monitrc

set mmonit http://monit:monit@yourhost:8080/collector
set httpd port 2812 and use address %(hostname)s
    allow localhost
    allow mmonit_server_hostname
    allow monit:monit