基礎一：

#!/usr/bin/env python
from fabric.api import *
env.user='root'
env.hosts=['218.78.186.162','125.208.12.56']
env.passwords={ 'root@218.78.186.162:22':'XXX','root@125.208.12.56:22':'XXXX@0'}
@runs_once ####runs_once代表只執行一次
def local_task():
local("hostname") ####local本地任務，不會ssh遠端執行
def remote_task():
with cd("/tmp/"):
run("hostname") ###run 遠端命令
@task ####task標記只有go函式可以呼叫remote_task函式
def go():
remote_task()

測試

[root@hostnfsd :/soft/python/pyauto/第七章/fabric]$ fab -f simple1_test.py remote_task ###直接呼叫remote_task函式失敗
Warning: Command(s) not found:
remote_task
Available commands:
go
[root@hostnfsd :/soft/python/pyauto/第七章/fabric]$ fab -f simple1_test.py local_task ###有task表標識時直接呼叫local函式失敗，meitask時才能直接呼叫local函式
Warning: Command(s) not found:
local_task
Available commands:
go
[root@hostnfsd :/soft/python/pyauto/第七章/fabric]$ fab -f simple1_test.py go 透過go函式呼叫remote_task函式
[218.78.186.162] Executing task 'go'
[218.78.186.162] run: hostname
[218.78.186.162] out: localhost.localdomain
[218.78.186.162] out:
[125.208.12.56] Executing task 'go'
[125.208.12.56] run: hostname
[125.208.12.56] out: host-192-168-1-56
[125.208.12.56] out:
Done.
Disconnecting from 218.78.186.162... done.
Disconnecting from 125.208.12.56... done.

有時我們希望直接用指令碼就可以執行，可以如下更改

#!/usr/bin/env python
from fabric.api import *
env.user='root'
env.hosts=['218.78.186.162','125.208.12.56']
env.passwords={ 'root@218.78.186.162:22':'ESBecs00','root@125.208.12.56:22':'eRaMUnA612@0'}
@runs_once
def local_task():
local("hostname")
def remote_task():
with cd("/tmp/"):
run("hostname")
def go():
execute(remote_task) ####execute表示在指令碼內執行即可
execute(local_task)
go()

直接執行即可
[root@hostnfsd :/soft/python/pyauto/第七章/fabric]$ python simple1_test.py

基礎2：

#!/usr/bin/env python
from fabric.api import *
env.user='root'
env.hosts=['218.78.186.162','125.208.12.56']
env.passwords={ 'root@218.78.186.162:22':'XXX','root@125.208.12.56:22':'XXXX@0'}
@runs_once
def input_raw():
return prompt("please input directory name:",default="/home")
def worktask(dirname):
run("ls -l "+dirname)
@task
def go():
getdirname = input_raw()
worktask(getdirname)

跳板機：

#!/usr/bin/env python
from fabric.api import *
from fabric.context_managers import *
from fabric.contrib.console import confirm
env.user='root'
env.gateway='218.78.186.162'
env.hosts=['125.208.12.56']
env.passwords={ 'root@218.78.186.162:22':'XX','root@125.208.12.56:22':'XXXX@0'}
lpackpath="/home/install/lnmp0.9.tar.gz"
rpackpath="/tmp/install"
@task
def put_task():
run("mkdir -p /tmp/install")
with settings(warn_only=True):
result = put(lpackpath, rpackpath)
if result.failed and not confirm("put file failed, Continue[Y/N]?"):
abort("Aborting file put task!")
@task
def run_task():
with cd("/tmp/install"):
run("tar -zxvf lnmp0.9.tar.gz")
run("ls -l")
@task
def go():
put_task()
run_task()

有時需要將這些功能模板寫到django中，那麼我們可以將該功能封裝到一個類中

#!/usr/bin/env python

from fabric.api import *

class Student(object):

        def __init__(self,user,ip):

                env.user=user

                env.hosts=[ip]

                env.password='XXX'

        @runs_once

        def local_task(self):

                local("hostname")

        def remote_task(self):

                vhost=run("df -h")

                return vhost

def yunxing(user,ip):

    tom=Student(user,ip)

    print execute(tom.remote_task)

yunxing('root','218.78.186.162') ###直接呼叫該函式傳參即可

更多內容可見《python自動化運維技術與最佳實踐》第7章-Fabric模組

【python】python 模組學習之--Fabric

基礎一：

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