Python fabric远程自动部署简介

2.1. Hello,fab

1. 在当前目录下新建文件fabfile.py，输入内容如下

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def hello():

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    print("Hello fab!")

2. 执行命令fab hello，结果如下

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# fab hello

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Hello fab!

3. 文件名不为fabfile.py时需进行指定

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# mv fabfile.py test.py

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# fab hello

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Fatal error: Couldn't find any fabfiles!

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Remember that -f can be used to specify fabfile path, and use -h for help.

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# fab -f test.py hello

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Hello fab!

4. 参数传递

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#vi fabfile.py

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def hello(name):

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        print 'Hello %s!'%name

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# fab hello:name=fab

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Hello fab!

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# fab hello:fab

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Hello fab!

2.2. 本地操作

执行本地操作命令使用local

1. fabfile.py脚本内容如下

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from fabric.api import local

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def test():

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local('cd /home/')

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local('ls -l|wc -l')

2. 执行命令fab test，结果如下

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# fab test

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[localhost] local: cd /home/

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[localhost] local: ls -l|wc -l

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8

2.3. 远程操作

执行远程操作命令使用run

1. fabfile.py脚本内容如下

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from fabric.api import cd,run,env,hosts

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env.hosts=['192.168.85.99:22','192.168.85.101:22']

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env.password='test'

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def test():

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with cd('/home'):

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run("du -sh")

2. 执行命令fab test，结果如下

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# fab test

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[192.168.85.99:22] Executing task 'test'

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[192.168.85.99:22] run: du -sh

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[192.168.85.99:22] out: 392G      .

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[192.168.85.99:22] out:

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[192.168.85.101:22] Executing task 'test'

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[192.168.85.101:22] run: du -sh

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[192.168.85.101:22] out: 5.6G     .

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[192.168.85.101:22] out:

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Disconnecting from 192.168.85.99... done.

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Disconnecting from 192.168.85.101... done.

3. 多服务器混合，需要在不同服务器进行不同操作时，可参考如下脚本

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from fabric.api import env,roles,run,execute

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env.roledefs = {

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'server1': ['root@192.168.85.99:22',],

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'server2': ['root@192.168.85.100:22', ]

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}

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env.password = 'test'

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@roles('server1')

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def task1():

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run('ls /home/ -l | wc -l')

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@roles('server2')

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def task2():

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run('du -sh /home')

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def test():

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execute(task1)

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execute(task2)

结果如下

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# fab test

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[root@192.168.85.99:22] Executing task 'task1'

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[root@192.168.85.99:22] run: ls /home/ -l | wc -l

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[root@192.168.85.99:22] out: 27

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[root@192.168.85.99:22] out:

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[root@192.168.85.100:22] Executing task 'task2'

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[root@192.168.85.100:22] run: du -sh /home

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[root@192.168.85.100:22] out: 1.4G   /home

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[root@192.168.85.100:22] out:

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Disconnecting from 192.168.85.99... done.

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Disconnecting from 192.168.85.100... done.