Automation of remote operations with Fabric

Use the IT automation library fabric (made by python).

fabric must be used with python2.5-2.7 (not compatible with python3)

Using fabric is very easy:

Create a function func () for the operation you want to perform in fabfile.py
On terminal, run $ fab func

Use pip to install fabric

$ pip install fabric

1. Create an execution script

$ sudo nano fabfile.py

`fabfile.py`


# coding: utf-8
from fabric.api import env, run, sudo

env.hosts = ["192.168.11.161",
             "192.168.11.162",
             "192.168.11.163",
             "192.168.11.164"]
env.user = "pi"
env.password = "raspberry"

def hello():
    run("ifconfig wlan0")
    run("ls")

def fix_100m_full():
    sudo("ethtool -s eth0 autoneg off speed 100 duplex full")
    sudo("ethtool eth0")

2. Run fabric

Check for executable tasks

$ fab -l

hello
fix_100m_full

Run task (try running an automatic script that turns off Auto-negotiation)

#$ fab <Task name>
$ fab fix_100m_full | grep Auto-nego

[192.168.11.161] out: 	Auto-negotiation: off
[192.168.11.162] out: 	Auto-negotiation: off
[192.168.11.163] out: 	Auto-negotiation: off
[192.168.11.164] out: 	Auto-negotiation: off

reference

http://fabric-ja.readthedocs.io/ja/latest/tutorial.html