How to use Fabric Module in python
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Basic one:
#! / usr/bin/env python
From fabric.api import *
Env.user='root'
Env.hosts= ['218.78.186.162]
Env.passwords= {'root@218.78.186.162:22':'XXX','root@125.208.12.56:22':'XXXX@0'}
@ runs_once # runs_once representative only executes once
Def local_task ():
Local ("hostname") # local local tasks will not be executed remotely by ssh
Def remote_task ():
With cd ("/ tmp/"):
Run ("hostname") # run remote command
@ task # task tag only go function can call remote_task function
Def go ():
Remote_task ()
test
[root@hostnfsd: / soft/python/pyauto/ Chapter 7 / fabric] $fab-f simple1_test.py remote_task # failed to call the remote_task function directly
Warning: Command (s) not found:
Remote_task
Available commands:
Go
[root@hostnfsd: / soft/python/pyauto/ Chapter 7 / fabric] $fab-f simple1_test.py local_task # if you fail to call the local function directly when it is identified by the task table, you can only call the local function directly when you meitask
Warning: Command (s) not found:
Local_task
Available commands:
Go
[root@hostnfsd: / soft/python/pyauto/ Chapter 7 / fabric] $fab-f simple1_test.py go calls the remote_task function through the go function
[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-192-168156
[125.208.12.56] out:
Done.
Disconnecting from 218.78.186.162... Done.
Disconnecting from 125.208.12.56... Done.
Sometimes we want to execute it directly with a script, which can be changed as follows
#! / usr/bin/env python
From fabric.api import *
Env.user='root'
Env.hosts= ['218.78.186.162]
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 means it can be executed within the script
Execute (local_task)
Go ()
Just run it directly.
[root@hostnfsd: / soft/python/pyauto/ Chapter 7 / fabric] $python simple1_test.py
Foundation 2:
#! / usr/bin/env python
From fabric.api import *
Env.user='root'
Env.hosts= ['218.78.186.162]
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)
Jumping machine:
#! / 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 [Ygamma 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 ()
Sometimes we need to write these function templates into django, so we can package the function into a class
#! / 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') # call this function directly and pass parameters
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