配置EC2的结构。

from __future__ import with_statement
from fabric.api import *


def ec2():
    env.hosts = [\'111.111.111.111\'] 
    env.user = \'ubuntu\'
    env.key_filename = \'/path/to/my/pem/key.pem\'

def run_ls():
    run(\'ls -alt\')

fab ec2 run_ls

[111.111.111.111] Executing task \'run_ls\'
[111.111.111.111] run: ls -alt

Fatal error: Host key for 111.111.111.111 did not match pre-existing key! Server\'s key was changed recently, or possible man-in-the-middle attack.

Aborting.

env.hosts = [\'111.111.111.111\'] 

env.hosts = [\'mywebsite.com\'] 

env.user = \"ubuntu\"
env.key_filename = [\"my_key.pem\",]

env.roledefs.update({
    \'prod\': [\'ec2-52-14-72-225.us-west-1.compute.amazonaws.com\'],
})

known_hosts

ssh-keygen -R 111.111.111.111