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【Python】fabric学习笔记

安装神马的就不多说了,直接开练~

文档:

http://docs.fabfile.org/en/1.6/

任务一:

new一个fabfile.py

def hello():
    print("Hello world!")
执行:
╭─@Flowerowl.local ~/z/pj/demos
╰─ fab hello
hello~~

任务二:

新建一个test.py

def hello():
    print("Hello world!")

执行:

╭─@Flowerowl.local ~/z/pj/demos
╰─ fab -f test.py  hello                                                  127 ↵
hello~~

Done.

任务三:

def hello(name, value):
    print("%s = %s!" % (name, value))

执行:

╭─@Flowerowl.local ~/z/pj/demos
╰─ fab hello:name=yuzhe,value=21
yuzhe = 21!

任务四:

from fabric.api import local

def lsfab():
    local('ls')

执行:

╭─@Flowerowl.local ~/z/pj/demos
╰─ fab lsfab                                                                1 ↵
[localhost] local: ls
array_list.py		fabfile.pyc		numpy_demos.py
decorator.py		main_mylocker.py	path.py
django.py		metaclass.py		stdin.py
django.pyc		mylocker.py		test.py
fabfile.py		mylocker.pyc		test.pyc

Done.

任务五:

两台机器:10.1.6.186、10.1.6.159。fabric部署在10.1.6.186上面。

执行一个简单的task任务,显示两台机器的/home/guol/目录下的文件

在fabric中可以将主机名、用户名、密码等信息写在fabfile中,但是不推荐将明文写在代码中,还是最好使用SSH的Key来认证

from fabric.api import *
from fabric.context_managers import *
 
env.hosts=['10.1.6.186','10.1.6.159']
env.password='xxxxxx'
 
def task1():
    with cd('/home/guol'):
        run('ls -l')
 
##结果
root@vm11:/tmp# fab task1
[10.1.6.186] Executing task 'task1'
[10.1.6.186] run: ls -l
[10.1.6.186] out: total 0
[10.1.6.186] out: -rw-r--r-- 1 root root 0 Dec 21 13:32 186-local
[10.1.6.186] out:
 
[10.1.6.159] Executing task 'task1'
[10.1.6.159] run: ls -l
[10.1.6.159] out: total 0
[10.1.6.159] out: -rw-r--r-- 1 root root 0 Dec 21 13:32 159-remote
[10.1.6.159] out:
 
 
Done.
Disconnecting from 10.1.6.159... done.
Disconnecting from 10.1.6.186... done.

任务六:

执行和1相同的任务,不过排除掉10.1.6.159这台机器

from fabric.api import *
from fabric.context_managers import *
 
env.hosts=['10.1.6.186','10.1.6.159']
env.password='xxxxxx'
env.exclude_hosts=['10.1.6.159']
 
def task1():
    with cd('/home/guol'):
        run('ls -l')
 
##执行
root@vm11:/tmp# fab task1
[10.1.6.186] Executing task 'task1'
[10.1.6.186] run: ls -l
[10.1.6.186] out: total 0
[10.1.6.186] out: -rw-r--r-- 1 root root 0 Dec 21 13:32 186-local
[10.1.6.186] out:
 
 
Done.
Disconnecting from 10.1.6.186... done.

任务七:

执行和2相同任务,再增加一个task2,并且把taskN伪装成meta任务执行

from fabric.api import *
from fabric.colors import *
from fabric.context_managers import *
 
env.hosts=['10.1.6.186','10.1.6.159']
env.password='xxxxxx'
env.exclude_hosts=['10.1.6.159']
 
 
def task1():
    with cd('/home/guol'):
        run('ls -l')
 
def task2():
    print(green("I'm fabric"))
 
def deploy():
    execute(task1)
    execute(task2)
 
##执行
root@vm11:/tmp# fab deploy
[10.1.6.186] Executing task 'deploy'
[10.1.6.186] Executing task 'task1'
[10.1.6.186] run: ls -l
[10.1.6.186] out: total 0
[10.1.6.186] out: -rw-r--r-- 1 root root 0 Dec 21 13:32 186-local
[10.1.6.186] out:
 
[10.1.6.186] Executing task 'task2'
I'm fabric
 
Done.
Disconnecting from 10.1.6.186... done.

任务八:

不同的机器执行不同的task

from fabric.api import *
from fabric.colors import *
from fabric.context_managers import *
 
env.roledefs={'web1':['10.1.6.186'],'web2':['10.1.6.159']}
env.password='xxxxxx'
 
@roles('web1')
def task1():
    with cd('/home/guol'):
        run('ls -l')
@roles('web2')
def task2():
    print(green("I'm fabric"))
 
def deploy():
    execute(task1)
    execute(task2)
##执行
root@vm11:/tmp# fab deploy
[10.1.6.186] Executing task 'task1'
[10.1.6.186] run: ls -l
[10.1.6.186] out: total 0
[10.1.6.186] out: -rw-r--r-- 1 root root 0 Dec 21 13:32 186-local
[10.1.6.186] out:
 
[10.1.6.159] Executing task 'task2'
I'm fabric
 
Done.
Disconnecting from 10.1.6.186... done.

任务九:

把159的/home/guol/159-remote拉取到186的 /home/guol/目录下

from fabric.api import *
from fabric.colors import *
from fabric.context_managers import *
env.hosts=['10.1.6.159']
env.password='xxxxxx'
 
def task1():
    print(green("I'm 186 /home/guol/"))
    local('ls -l /home/guol')
def task2():
    print(green("I'm get 159's 159-remote file to 186"))
    get('/home/guol/159-remote','/home/guol')
    print(yellow("I'm 186 /home/guol/"))
    local('ls -l /home/guol')
 
def deploy():
    execute(task1)
    execute(task2)
 
##执行
root@vm11:/tmp# fab deploy
[10.1.6.159] Executing task 'deploy'
[10.1.6.159] Executing task 'task1'
I'm 186 /home/guol/
[localhost] local: ls -l /home/guol
total 0
-rw-r--r-- 1 root root 0 Dec 21 13:32 186-local
[10.1.6.159] Executing task 'task2'
I'm get 159's 159-remote file to 186
[10.1.6.159] download: /home/guol/159-remote <- /home/guol/159-remote
I'm 186 /home/guol/
[localhost] local: ls -l /home/guol
total 0
-rw-r--r-- 1 root root 0 Dec 21 14:28 159-remote
-rw-r--r-- 1 root root 0 Dec 21 13:32 186-local
 
Done.
Disconnecting from 10.1.6.159... done.

任务十:

把186的/home/guol/ 186-local推送到159的 /home/guol/目录下

from fabric.api import *
from fabric.colors import *
from fabric.context_managers import *
env.hosts=['10.1.6.159']
env.password='xxxxxx'
 
def task1():
    print(green("I'm 159 /home/guol/"))
    with cd('/home/guol'):
        run('ls -l')
def task2():
    print(green("I'm put 186's 186-local file to 159"))
    put('/home/guol/186-local','/home/guol')
    print(yellow("I'm 159 /home/guol/"))
    with cd('/home/guol'):
        run('ls -l')
def deploy():
    execute(task1)
    execute(task2)
 
##执行
root@vm11:/tmp# fab deploy
[10.1.6.159] Executing task 'deploy'
[10.1.6.159] Executing task 'task1'
I'm 159 /home/guol/
[10.1.6.159] run: ls -l
[10.1.6.159] out: total 0
[10.1.6.159] out: -rw-r--r-- 1 root root 0 Dec 21 13:32 159-remote
[10.1.6.159] out:
 
[10.1.6.159] Executing task 'task2'
I'm put 186's 186-local file to 159
[10.1.6.159] put: /home/guol/186-local -> /home/guol/186-local
I'm 159 /home/guol/
[10.1.6.159] run: ls -l
[10.1.6.159] out: total 0
[10.1.6.159] out: -rw-r--r-- 1 root root 0 Dec 21 13:32 159-remote
[10.1.6.159] out: -rw-r--r-- 1 root root 0 Dec 21 14:33 186-local
[10.1.6.159] out:
 
 
Done.
Disconnecting from 10.1.6.159... done.

任务十一:

在186上打开一个159的交互式的shell

from fabric.api import *
from fabric.colors import *
from fabric.context_managers import *
env.hosts=['10.1.6.159']
env.password='xxxxxx'
 
def task3():
    open_shell("ifconfig eth0|grep '10.1.6.159'")
def deploy():
     execute(task3)
 
##执行
root@vm11:/tmp# fab deploy
[10.1.6.159] Executing task 'deploy'
[10.1.6.159] Executing task 'task3'
Welcome to Ubuntu 12.10 (GNU/Linux 3.5.0-17-generic x86_64)
Last login: Fri Dec 21 14:39:39 2012 from 10.1.6.186
ifconfig eth0|grep '10.1.6.159'
root@vm12:~# ifconfig eth0|grep '10.1.6.159'
          inet addr:10.1.6.159  Bcast:10.1.6.255  Mask:255.255.255.0

 

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