Python fabric实践操作

前面学习了理论，下面该练练手了。
两台机器：10.1.6.186、10.1.6.159。
fabric部署在10.1.6.186上面
。
1 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

#!/usr/bin/python
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.

2 执行和1相同的任务，不过排除掉10.1.6.159这台机器

#!/usr/bin/python
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.

3 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

#!/usr/bin/python
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.

4 不同的机器执行不同的task

#!/usr/bin/python
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.

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

#!/usr/bin/python
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.

6
把186的/home/guol/

186-local推送到159的

/home/guol/目录下

#!/usr/bin/python
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.

7 在186上打开一个159的交互式的shell

#!/usr/bin/python
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