python操作远程服务器切换到root用户
在自动化运维过程中，需要远程服务器切换到root用户下执行命令，尝试了一些方法，得到如下好用的方法，供大家使用：1
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import time
import paramiko
def verification_ssh(host,username,password,port,root_pwd,cmd):
s=paramiko.SSHClient()
s.load_system_host_keys()
s.set_missing_host_key_policy(paramiko.AutoAddPolicy())
s.connect(hostname = host,port=int(port),username=username, password=password)
if username != 'root':
ssh = s.invoke_shell()
time.sleep(0.1)
ssh.send('su - \n')
buff = ''
while not buff.endswith('Password: '):
resp = ssh.recv(9999)
buff +=resp
ssh.send(root_pwd)
ssh.send('\n')
buff = ''
while not buff.endswith('# '):
resp = ssh.recv(9999)
buff +=resp
ssh.send(cmd)
ssh.send('\n')
buff = ''
while not buff.endswith('# '):
resp = ssh.recv(9999)
buff +=resp
s.close()
result = buff else:
stdin, stdout, stderr = s.exec_command(cmd)
result = stdout.read()
s.close()
return result
if __name__ == "main":
verification_ssh('192.168.1.11','cimer','1q2w3e4r',22,'1q2w3e4r','ifdown eth0')
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