fabric是一种python类库，基于ssh协议的命令行工具用于应用部署和系统任务管理，下面来说一下fabric代码并行运行的两种方式：
1：参数 -P
from fabric.api import *
host1 = 'root@ip1:22'
host2 = 'root@ip2:22'
env.hosts = [host1, host2 ]
env.passwords = {
host1: "p1",
host2: "p2"
}
def backup_and_cp():
with cd("/home/**"):
run('ls')然后 运行 fab -P backup_and_cp就可以了
2：装饰器
import timefrom fabric.api import *host1 = 'root@ip1:22'host2 = 'root@ip2:22'
env.hosts = [host1, host2 ]
env.passwords = {
host1: "p1",
host2: "p2"
}
@parallel
def backup_and_cp():
with cd("/home/**"):
run('ls')运行 fab backup_and_cp就OK了
