详解python通过paramiko模块批量执行ssh命令

#!/usr/bin/env python
# -*- coding:utf-8 -*-
 
__author__ = 'babyshen'
__version__ = '1.0.0'
 
import paramiko
 
class SSh(object):
 def __init__(self,port,username,password):
 self.port = port
 self.username = username
 self.password = password
 
 def ssh_con(self,host,ip,cmd):
 ssh = paramiko.SSHClient()
 ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
 ssh.connect(ip,self.port,self.username,self.password)
 stdin, stdout, stderr = ssh.exec_command(cmd)
 res,err = stdout.read(),stderr.read()
 result = res if res else err
 print('33[31;1m%s %s33[0m' %(host,ip))
 print('33[32;1m%s33[0m' %result.decode())
 ssh.close()
 
if __name__ == '__main__':
 client = {'host1':'1.1.1.1', 
 'host2':'2.2.2.2', 
 'host3':'3.3.3.3', 
 'host4':'4.4.4.4', 
 } # 主机列表 ，hostname:ip 
 port = 22 # 端口号 
 username = 'root' # 用户名 
 password = '123456789' # 密码 
 
 cmd = "ip route show match 1.1.1.1 | head -1"
 
 ssh = SSh(port,username,password)
 for i in client:
 host,ip = i,client[i]
 try:
 ssh.ssh_con(host,ip,cmd)
 except WindowsError:
 print('33[31;1m%s %s %s 33[0m
' %(host,ip,'连接尝试失败'))
 except Exception as e:
 print(e)