Github: fabric/fabric

Doc: Fabric

Fabic 是用于通过SSH 远程执行 shell 命令的封装库. 基于 Invoke (subprocess command execution and command-line features) 和Paramiko (SSH protocol implementation).

安装：

#1.x version 
pip install fabric
pip install -e git+https://github.com/fabric/fabric

#2.x version, recommended
pip install fabric2

示例：

from fabric import Connection

result = Connection('192.168.1.100').run('uname -s', hide=True)
msg = "Run {0.command!r} on {0.connection.host}, got stdout:\n{0.stdout}"
print(msg.format(result))
'''
Run 'uname -s' 192.168.1.100, got stdout:
Linux
'''

单机单命令

from fabric import Connection

result = Connection('web1').run('hostname')
#web1
print(result)
#<Result cmd='hostname' exited=0>

多机单命令

from fabric import SerialGroup

result = SerialGroup('web1', 'web2').run('hostname')
'''
web1
web2
'''

# Sorting for consistency...it's a dict!
print(sorted(result.items()))
#[(<Connection host=web1>, <Result cmd='hostname' exited=0>), ...]

单机代码块

def disk_free(c):
    uname = c.run('uname -s', hide=True)
    if 'Linux' in uname.stdout:
        command = "df -h / | tail -n1 | awk '{print $5}'"
        return c.run(command, hide=True).stdout.strip()
    err = "No idea how to get disk space on {}!".format(uname)
    raise Exit(err)

print(disk_free(Connection('web1')))

多机代码块

# NOTE: Same code as above!
def disk_free(c):
    uname = c.run('uname -s', hide=True)
    if 'Linux' in uname.stdout:
        command = "df -h / | tail -n1 | awk '{print $5}'"
        return c.run(command, hide=True).stdout.strip()
    err = "No idea how to get disk space on {}!".format(uname)
    raise Exit(err)

for cxn in SerialGroup('web1', 'web2', 'db1'):
    print("{}: {}".format(cxn, disk_free(cxn)))
'''
<Connection host=web1>: 33%
<Connection host=web2>: 17%
<Connection host=db1>: 2%
'''